• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    To create a three-dimensional object in a stereolithographic process, a plurality of layers (30) are cured in a timed sequence so that their entirety forms the three-dimensional object. The layers are subdivided into two or more subregions (31, 32) that lie substantially next to one another within the layer, wherein a subarea in one edge region (34) to another subarea of the same layer includes region parts (35) that form-fit into the region protrude other sub-area. These sub-areas are developed one after the other and thus form the desired layer areas overall.
    公开号:AT518101A2
    申请号:T51079/2015
    申请日:2015-12-17
    公开日:2017-07-15
    发明作者:Stadlmann Klaus
    申请人:Stadlmann Klaus；
    IPC主号:
    专利说明:

    Method of producing a three-dimensional object
    The invention relates to a 3D printing method, more particularly to a method of producing a three-dimensional object in a stereolithographic process by developing a plurality of layers in sequence, the entirety of which forms the three-dimensional object, wherein at least one of the layers is divided into two or more portions is divided, which are substantially adjacent to each other; the subareas thus defined are developed in separate development steps. The development of a layer or of a subregion of a layer is generally carried out by curing a substance suitable for this purpose.
    Methods of this type are known, wherein besides stereolithography various other terms such as rapid prototyping, Fotosolidification or 3D printing are common.
    In a stereolithographic process, a three-dimensional body of a photosensitive substance is produced by layerwise or continuous juxtaposition of layers or layer information. In a manufacturing process of this kind, a curable substance is used to form a three-dimensional object ("body" or "object") layer by layer by generating geometric layer information that may be generated, for example, by a digital mask or by a moving laser beam specifiable desired shape to produce. The curable substance is usually a photosensitive material which is liquid or pasty and cures when irradiated by suitable light, usually a liquid monomer formulation.
    Different 3D printing methods for generating three-dimensional objects from a photosensitive material are known. Depending on the method, pasty, liquid or else granular materials are solidified by the action of electromagnetic radiation (for example by UV radiation, IR radiation). One example is stereolithography techniques that use pixel-based mask exposure techniques to locally cure a photosensitive material. In these, the original layer information can be converted into partial information for partial areas of the individual layers, in order then to be partially cured.
    Exposure systems utilizing pixel-based mask exposure systems (e.g., Micro Optical Mirror Devices, also known as DLP) to generate layer information are limited to an exposure range of a given size for a given pixel resolution. As a result, only objects that match the specified exposure range can be generated in a 3D printing process. This also applies to other exposure methods, such as optical systems, which use galvano scanners.
    A per se known approach to circumvent this restriction in terms of sizes, is that a too large layer information for the exposure area is split into smaller sub-areas and exposed sequentially in the form of these sub-areas.
    An example of such a method is described in EP 1946910 A2. Therein, several projection devices are combined by a logic composite to obtain a larger exposure range. This exposure region has line-shaped overlaps at the edges of the colliding individual images, and EP 1946910 A2 also describes the use of so-called gray levels, that is to say regions in the order of V2 to 1 pixels, in which the intensity is not the entire Thus, the entire layer information is divided by defining boundary lines into individual areas, which are then developed via the corresponding irradiation source, wherein the edges of the area are completely superimposed by means of the gray levels.
    EP 1666235 A1 describes a continuous exposure method in which a layer information which is larger than a single exposure area of the pixel-based mask at a given resolution and the associated exposure process are performed by projecting a video synchronized with a movement device. As a result, a narrow, but theoretically unlimited, area can be selectively cured in a location-selective manner. By scanning line by line so the extent in the direction transverse to the direction of movement can be extended as desired. This results in turn overlap areas in which a double exposure is done by modulating the irradiation intensity in order to achieve a composite of adjacent strips.
    The known methods have some disadvantages. At the boundaries between the sub-areas, which are generated in separate development steps, borderlines or even gaps often arise, which can lead to breakage of the manufactured object. In addition, material-dependent aging effects, in particular when gray levels are used in the overlapping area of the individual images, lead to incomplete curing. In addition, the line-shaped overlapping areas of the sublayer information result in uneven strength of the fabricated object and may further affect the appearance.
    The aim of the present invention is to avoid the mentioned disadvantages of the known stereolithographic processes with layers composed of partial areas. In particular, defects and break points in overlapping areas of the frames due to incomplete development are to be avoided, and the effects of the line-shaped overlaps should be eliminated to achieve greater strength with improved three-dimensional bonding. In particular, errors in the exposure process due to incorrectly formed boundary lines, which can lead to breakage of the object, are avoided.
    The object is achieved on the basis of a method of the type described above in that, according to the invention, at least one of the subareas in one edge area to another subarea of the same layer includes area parts which project positively into the other subarea.
    This solution represents a new approach for merging image information in subareas into overall layer information, starting from a subdivision of the original overall layer information into individual subareas. Instead of a straight or only slightly curved dividing line between the subregions, the boundary region between subregions is designed such that the subregions interlock with one another and enter into a positive connection of the subregion with one another; the sum of the subregions then yields the layer or layer information of this layer as a whole. In this case, positive connection means that at least one of the subregions is connected to the associated subarea and the width of the connection region does not increase in the direction of the assigned subarea, as described e.g. in a comb-shaped or dovetail-like connection is the case. In a positive
    Connection is a disassembly of the connected parts not possible without the parts are deformed or even destroyed, such as. by detachment of one or more of the territorial parts which protrude into another subarea. Also, the strength of the component is increased in the partial area compared to other approaches, since cracks can be difficult to spread by the intermeshing of the partial areas. These subregions are developed one after the other and thus form the desired layer areas overall, which in turn form the three-dimensional object to be produced.
    In an advantageous aspect of the invention it can be provided that edge regions of subregions which adjoin one another in a layer are connected; they can intermesh comb-shaped and / or positive fit. According to a favorable embodiment of this aspect, the marginal areas of adjoining subareas can intermesh along a splitting line which does not allow a shape-retaining separation of the border areas or the subareas. In this way, the cohesion within the object between the subregions can be significantly improved.
    A variation of this aspect extends the formation of contiguous fringes to multiple superimposed layers. Accordingly, it can be provided that a number of superimposed layers are divided into each other geometrically corresponding subregions, the edge regions of corresponding subregions of superimposed layers together form a coherent three-dimensional shape, the three-dimensional shapes thus formed mutually interlocking and form a do not allow for the dissociation of these three-dimensional shapes.
    According to an advantageous development of the invention, at least two of the subareas which adjoin one another in a layer may contain form-fittingly into the respective other subarea projecting area parts.
    An embodiment of the invention can provide an overlapping area between two adjoining subareas of a layer, which includes border areas of both subareas involved in the overlap area, wherein the border areas contain area sections protruding into the respective other subarea in a form-fitting manner; Here, in each overlap area, the development of the layer will be carried out in part in those development steps that belong to the subareas involved in the overlapping area. Preferably, the two partial areas involved in the overlapping area are complementary to one another with respect to the layer or layer information to be generated. In this embodiment, the division in the overlapping area can take place, for example, by dividing the overlapping area into area pieces in a mosaic-like manner, and assigning the areas thus formed at random to the subareas involved in the overlapping area. This random distribution results in a reliable and stable transition, which avoids pattern formation through regular structures at the same time. In order to achieve as fine a meshing of the subregions as possible, it may be favorable if the mosaic division is carried out in accordance with a division of the layer into pixels or predetermined groups of pixels.
    The development of the layers can generally be carried out by exposure to a radiation which initiates the curing of the layer. Such radiation, which is suitable for triggering the curing of the substance, is also referred to herein as actinic radiation.
    As a rule, the development process is designed such that the subregions are exposed in chronological order, preferably the subregions of a respective layer in chronological succession.
    In addition, in superposed layers, subdivision of the layers into subregions may be effected such that the edge regions of the different layers (e.g., successive layers) have mutually mirrored and / or inverted geometries.
    In order to avoid impairing the shape of the body to be produced in terms of its outer contour, it may be advantageous if the area portions which project positively into another portion are spaced from the outer contour of the three-dimensional object to be produced, preferably at a predetermined minimum distance.
    In a further development of the invention, the development of all layers or of individual layers may take place in a plurality (i.e., two or more) exposure passes, wherein the exposure passes of one layer take place in chronological order and in each case essentially for the entire layer. In this case, the invention can be carried out such that in at least one of the exposure passes the relevant layer is subdivided into at least two subregions which are substantially adjacent to each other and are developed in separate development steps, wherein at least one of these subregions in a peripheral region becomes one another portion of the same layer in the same exposure passage area includes areas that protrude form fit into the other sub-area.
    In the context of the invention, the exposure, and thus also the generation of the layer information, can also take place continuously. For example, this can be achieved by a relative movement between the exposure area and the light source using, for example, a mask exposure system (eg, a DMD, DLP) whose generated exposure pattern changes continuously depending on the position of the exposure area or the light source according to position and relative speed and thus represents a continuous projection.
    The invention together with further embodiments and advantages will be described in more detail below with reference to a non-limiting embodiment, which is provided in the accompanying drawings. The drawings show in a schematic way
    Figure 1 shows the structure of a three-dimensional object of a plurality of layers, which are each divided into sub-areas.
    2a-2e illustrate the division of a layer into two partial regions, FIG. 2a showing a layer with the layer information for a three-dimensional object, FIG. 2b the division of the layer into two partial regions, FIG. 2c the definition of an overlapping region, and FIG Figures 2d and 2e illustrate the splitting of the overlap area with comb-like or hook-like toothed boundary areas;
    Fig. 3 illustrates an embodiment with a division of pixels of an overlapping area according to a random assignment to the two partial areas;
    Fig. 4 illustrates an embodiment with a division of pixels of an overlap area according to a random assignment and gray levels;
    Fig. 5 shows an embodiment of the invention in which superimposed layers are interlocked; and
    FIG. 6 shows a plan view of a layer of FIG. 5. FIG.
    The perspective view of Fig. 1 shows a space area 1 in which a three-dimensional body 2 is produced by means of a stereolithographic process. According to a usual procedure, the space area 1 is divided into a plurality of superimposed layers 3; the layers 3 preferably have a constant thickness. In the space region 1, the three-dimensional body 2 is formed from a plurality of superimposed layer information 4. Here, layer information refers to those areas within a layer that are developed according to the body 2 to be generated. By the reference numeral 4, the layer information of the uppermost layer is exemplified. FIG. 1 also shows by way of example two of the layers 3a, 3b with the layer information 4a, 4b contained therein. The layer information 4, 4a, 4b are developed chronologically successively, for example beginning with the uppermost layer and proceeding downwards (in other alternative embodiments if appropriate), whereby the body 2 is produced layer by layer. The shape of the body 2 can be chosen arbitrarily. The body 2 is held by a support (not shown) to which it is connected via the first layered information 4 (i.e., the uppermost layer) that is generated and typically remains connected during the manufacturing process. In most cases, the body 2 is located entirely within the overall area 1 except for this stop on the first generated layer. However, the body 2 may also rest against one or more side surfaces of the space area 1; For example, as shown in the embodiment shown, the body 2 may abut the front of the overall area 1.
    According to the invention, the development of the photosensitive material in a layer takes place in at least two temporally separate development steps, each of which develops a partial region of the layer. For this purpose, the layer is divided into two or more subregions, which lie substantially next to one another within the layer, wherein a subarea in an edge region to another subarea of the same layer includes region parts which project into the other subarea in a form-fitting manner. These sub-areas are developed one after the other and thus form the desired layer areas of one layer in total. The subregions of all layers thus result in total the entire three-dimensional body.
    The layers 3, 3a, 3b are already shown in FIG. 1 with a division into partial areas according to the invention. In the embodiment shown, the distribution of the layers is substantially constant, but in the context of the invention the distribution may also vary from layer to layer.
    FIGS. 2a to 2e illustrate the division of a layer into two subregions. FIG. 2a shows an exemplary layer 30 with the layer information 40 of a three-dimensional object. The layer 30 is - for example because it is too large for a single exposure process, or for other reasons - divided into two sections 31,32, for example, as shown in Fig. 2b on either side of a division line 33. The dividing line 33 shown here is straight, but in other embodiments it may also be bent or composed of straight or curved curve parts. Then, an overlapping area (or transition area) 34 is defined-FIG. 2c-which runs along the dividing line, for example with a width B which remains the same along the dividing line in the exemplary embodiment shown. However, the width of the overlapping area may also vary along the course of the dividing line, especially if the dividing line is curved or composed of sections having different orientations. The overlap area is then redistributed to the two subareas, with subareas that belong to one subarea extending between areas of the area that belong to the other. 2d shows a division of the overlapping region 35 with comb-like toothed boundary regions, and FIG. 2e shows an overlapping region 36 with hook-like interlocking region parts.
    The division can be carried out, for example, by segmenting the overlapping area in successive parts of the area along the dividing line, and assigning these areas to the adjoining partial areas alternately. The region parts may be, for example, parallel oriented strips or rectangles, which may result in a comb-like division as in FIG. 2d. Additionally, the area parts
    Form projections or meander pattern, whereby the areas interlock with each other. In all of these cases, a toothing with area parts which form-fittingly protrude into the respective other subarea, wherein preferably the edge areas of subregions which adjoin one another in a layer, are in each case continuous. As can also be seen from the examples of FIGS. 2d and 2e, in the overlapping region 34 the dividing line is replaced by a complex dividing line, along which the edge regions of the adjoining partial regions mesh. In this way, an intimate connection of the two sections is ensured; In particular, it is not possible to move the edge regions apart without causing deformation or breakage in or next to the overlapping area.
    According to the invention, the image information formed in the subregions can vary from layer to layer not only in its local position and extent, but also in the formed geometry. This means, for example, that a pattern formed in the subregions or overlapping regions differs from the pattern of the preceding layer and / or the next layer to be produced in this region.
    Thus, for example, in the simplest case from layer to layer in the overlap region or a part thereof, a reflection and / or inversion of the geometric information of the pattern in the overlap region of the preceding layer can be formed. The reflection can be made, for example, at the division line or a centerline of the overlapping area, or at a line perpendicular thereto; also, a point reflection (for example, at a center of the subject area) may be made. Inversion means the reversal of the assignment of the territorial parts to the two parts involved; In other words, expressed in gray levels, inversion means substituting a gray scale value x by the value 1-x. Thus, the mirrored and / or inverted pattern or inverted form of the positive pattern is used in successive overlapping regions of different layers. This simplifies the calculation of the pattern in the overlapping area.
    The overlapping area may also be tessellated into area pieces, and then the mosaiced areas are assigned to the participating areas according to a predetermined procedure or randomly (e.g., by means of a pseudorandom number generator). In a particularly simple, but nevertheless effective special case, the mosaic-like splitting can take place according to the pixels (or predetermined groups of pixels, eg with pixel areas of nxm pixels each, where n and m are positive integers, also n = m> 1 is possible) which are based on a grid-based development of the layer.
    Fig. 3 illustrates an example of a division of an overlapping area 23 with a width of 3 pixels. The pixels of the overlapping area are assigned randomly ("randomly") to one partial area 21 or to the other partial area 22, which is indicated in the figure by the corresponding hatching.
    The method according to the invention can also be combined with exposure according to gray levels. In this case, the assignment of the subregions or pixels (or pixel groups) in the overlapping region does not take place directly to the two subregions, but to gray values which can assume values between 0 and 1, corresponding to values between 0% and 100%. Gray values are known for exposure in overlapping areas in stereolithographic processes. In this case, the exposure dose necessary for developing is supplied in each case partly to the region in the two development steps of the two partial areas involved, so that the necessary exposure dose is achieved in total, e.g. in each case 50%, or 40% and 60% respectively (corresponding to a gray scale x = 0.4 = 40%).
    In the limiting case, a gray scale value x = 100% means that the exposure takes place entirely in the exposure step of the first subarea, while x = 0% means the exposure (only) in the exposure step of the second subarea.
    The width B and the location of the overlap area may be the same or vary from layer to layer. Thus, for example, an overlap strip could be formed in layer n from B = 5 pixel rows, in the preceding layer n-1 from 4 pixel rows and at the subsequent layer n + 1 from 8 pixel rows; Of course, these numbers are only of an exemplary nature. Thus, the extent of the overlapping areas or of the subareas formed therein can change from layer to layer.
    4 illustrates a variant of the distribution of FIG. 3 with gray levels. Again, the hatching symbolizes the assignments of the pixels in the overlap area 43 to the subregions 41 and 42 (= gray levels 100% and 0%, respectively). The dotted pixels 44 are given a gray level. For example, the value of the gray level is 50%, i. The pixels are each half exposed in both exposure steps of the two sections 41 and 42. In other variants, the gray levels may be chosen differently. For example, the gray levels can be alternately or randomly distributed at 30% and 70%. Of course, other grayscale values as well as a greater number of grayscale values may be used depending on the desired application.
    Another variant is illustrated in FIGS. 5 and 6. If an exposure dose of more than 100% is supplied to a pixel (or region portion), it results in a layer region having a higher thickness than the remaining layer. In this way, protruding into the respective overlying layer pins or teeth can be formed. For example, in Fig. 5, the portion 51 at the boundary to the portion 52 has teeth 53, e.g. These teeth 53 project into apertures 60 of the overlying portion 61. These apertures correspond to 0% exposure, and the other portion 62 of the upper layer is exposed to light at 200% of the "normal" exposure dose again has teeth that can engage in a (not shown) third layer, etc. Fig. 6 shows a plan view of the upper (second) layer of Fig. 5, wherein along the dividing line between the portions 61 and 62 projecting upwards Teeth 53 of the underlying layer can be seen.
    This aspect of the invention allows the geometry information of the layers and their subregions to be modified so as to contribute in total to interdigitation of the layers of the formed object while avoiding the formation of a simple linear seam which causes fracture or separation could facilitate.
    According to the invention, by the sum of the subregions, which is formed by at least partial superposition of at least two adjoining subregions, layer information is generated which again geometrically coincides with the desired layer geometry of the object to be formed. In the context of the invention, in each case a subarea in the overlap area of a subarea represents, at least in total, a part of the exposure area of the layer to be generated. The exposure process can have different exposure times, sequences and intensities between the subarea and the subarea to which it belongs.
    In general, a plurality of superimposed layers in - but preferably not necessarily mutually geometrically corresponding - partial areas are shared, and these sub-areas interlock form-fitting manner. In this case, the edge regions of mutually corresponding subregions of superimposed layers can also, taken together, form a coherent three-dimensional shape, so that the three-dimensional shapes thus formed interlock with one another and do not permit a shape-retaining separation.
    Of course, the invention is not limited to the embodiments shown, but rather the invention includes all embodiments according to the claims. According to the invention, the overlap area is subdivided into "sectors" (ie subregions) which overlap the original boundary line, which represents the division line between adjacent subareas, and thus no longer correspond to the original geometric information, first by superimposing the sectors of the subareas involved the original geometric information of the layer area is restored.
    By combining the corresponding sectors of the subregions, the complete layer information of the respective layer is again obtained, for example by virtue of the fact that the corresponding sectors act complementary to one another in their geometrical information, i. are complementary to each other. This avoids overexposing the layers. This can also be done in combination with the gray levels described above, e.g. with gray levels of values x and 1-x. Instead of gray levels, pulse width modulation (PWM) can also be achieved with pixel-based exposure systems.
    In addition, it may be advantageous if the subregions formed in the overlap regions - i. "Sectors" - the original geometry of the layer information of the subregions takes into account - in particular the contours corresponding to the surface of the three-dimensional body to be generated, for example a sector may include a part of the contour of the geometry of the subarea, ie the division line Body should at least maintain its outer contour or be accurately mapped, it may be beneficial if only from a certain minimum distance from the outer contour - eg 2 pixels - a complex division according to the invention (eg by a mosaic or a gearing as above For example, in this case, a pseudorandom generator would not begin until a distance from the outer surface of the body with a division of the subregions or pixels in an overlap area according to the invention; Pixel or absolute unity defined (eg, millimeters).
    In addition, the exposure of a sector can also take place several times, namely in further exposure steps in addition to those two which belong to the two subregions, and in different time sequences and intensities. In particular, a layer can be exposed in several (k> l) passes, each providing a portion of the exposure (e.g., with exposure intensity = 1 / k of the desired final intensity); In each pass, a different subdivision of the layer into subregions may be provided, so that the overlapping area of the passages are different from each other. Thus, an area in one pass may correspond to a sector of an overlap area, and this sector may be exposed once with an intensity corresponding to one of the participating subregions of the respective passage; in the remaining passes, the area may lie in the middle of a subarea, so that in these passes, the exposure takes place with an intensity according to the respective subarea. In a variant of this, in addition the intensity values of the different passes can be varied for a certain area piece such that the total sum of the intensities remains the same, namely the desired exposure intensity. This can additionally improve the internal cohesion of the subregions and sectors in a layer as well as of the layers with one another.
    权利要求:
    Claims (13)
    [1]
    claims
    A method of producing a three-dimensional object (2) in a stereolithographic process by developing a plurality of layers (3) in time sequence, the entirety of which forms the three-dimensional object, wherein at least one of the layers (3, 3a, 3b, 30) in at least two partial areas is subdivided, which are substantially adjacent to each other and each developed in separate development steps, characterized in that at least one of the partial areas (21, 22, 31, 32, 41, 42, 51, 52, 61, 62) in an edge region (23, 34, 43) to another subregion of the same layer includes region parts (35, 36, 53, 63) which project into the other subregion in a form-fitting manner.
    [2]
    2. The method according to claim 1, characterized in that edge regions of subregions which adjoin one another in a layer, are continuous and comb-shaped and / or form-fitting (35, 36) engage with each other.
    [3]
    3. The method according to claim 2, characterized in that the edge regions of adjoining subregions mesh along a splitting line which does not allow a shape-retaining separation of the edge regions.
    [4]
    4. The method according to claim 1, characterized in that a number of superimposed layers in each other geometrically corresponding subregions (51, 52, 61, 62) are divided, wherein the edge regions of mutually corresponding subregions of superimposed layers taken together form a coherent three-dimensional shape , wherein the three-dimensional shapes thus formed interlock with each other and do not allow a formewahrendes divergence.
    [5]
    5. The method according to any one of the preceding claims, characterized in that at least two of the sub-areas, which adjoin one another in a layer, form-fitting in the respective other subarea projecting area parts include.
    [6]
    6. The method according to any one of the preceding claims, characterized in that between two adjoining partial areas (21,22, 31, 32,41,42) of a layer, an overlap area (23, 34,43) is provided, the edge areas of both at the overlapping area In each overlap area, the development of the layer takes place in each case in those development steps that belong to the subareas involved in the overlapping area.
    [7]
    7. The method according to claim 6, characterized in that the division in the overlap area (23,43) takes place in that the overlapping area is divided like a mosaic into area pieces, and the area pieces thus formed are randomly assigned to the subregions involved in the overlapping area.
    [8]
    A method according to claim 7, characterized in that the mosaic splitting is in accordance with a division of the layer into pixels or predetermined groups of pixels.
    [9]
    9. The method according to any one of the preceding claims, characterized in that the development of the layers by exposure to a curing of the layer-initiating radiation takes place.
    [10]
    10. The method according to any one of the preceding claims, characterized in that the subregions are exposed in chronological order, preferably the subregions of a respective layer in temporal succession.
    [11]
    11. The method according to any one of the preceding claims, characterized in that in each case a subdivision of the layer into subregions takes place in superimposed layers, wherein the edge regions in different layers have mutually mirrored and / or inverted geometries.
    [12]
    12. The method according to any one of the preceding claims, characterized in that the area portions which project positively into another portion, are spaced from the outer contour of the three-dimensional object to be generated (2), namely at a predetermined minimum distance.
    [13]
    13. Method according to claim 1, characterized in that the development of at least one layer takes place in a plurality of exposure passes, wherein the exposure passes of a layer take place in chronological order and in each case substantially for the entire layer, wherein in at least one of the exposure passes is divided into at least two sub-areas, which are substantially adjacent to each other and are developed in separate development steps, wherein at least one of these sub-areas in a peripheral area to another portion of the same layer in the same exposure passage includes areas of the area that form-fitting protrude into the other sub-area ,
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    同族专利:
    公开号 | 公开日
    AU2016371224A1|2018-07-05|
    JP2018537324A|2018-12-20|
    RU2018126043A|2020-01-17|
    WO2017100811A1|2017-06-22|
    AT518101A3|2018-02-15|
    KR102226189B1|2021-03-11|
    CN108602247A|2018-09-28|
    EP3390004A1|2018-10-24|
    RU2018126043A3|2020-01-17|
    KR20180111785A|2018-10-11|
    RU2726524C2|2020-07-14|
    AT518101B1|2018-05-15|
    US11267196B2|2022-03-08|
    BR112018011946A2|2018-11-27|
    JP6797921B2|2020-12-09|
    US20190315051A1|2019-10-17|
    CA3008898A1|2017-06-22|
    AU2016371224B2|2019-11-14|
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    申请号 | 申请日 | 专利标题
    ATA51079/2015A|AT518101B1|2015-12-17|2015-12-17|Method of producing a three-dimensional object|ATA51079/2015A| AT518101B1|2015-12-17|2015-12-17|Method of producing a three-dimensional object|
    US16/062,742| US11267196B2|2015-12-17|2016-12-09|Method for producing a three-dimensional object|
    RU2018126043A| RU2726524C2|2015-12-17|2016-12-09|Method of creating a three-dimensional object|
    BR112018011946-6A| BR112018011946A2|2015-12-17|2016-12-09|process for producing a three dimensional object|
    PCT/AT2016/060120| WO2017100811A1|2015-12-17|2016-12-09|Method for producing a three-dimensional object|
    JP2018531580A| JP6797921B2|2015-12-17|2016-12-09|How to model a 3D object|
    CN201680074024.9A| CN108602247A|2015-12-17|2016-12-09|Method for generating three-dimension object|
    EP16822369.1A| EP3390004A1|2015-12-17|2016-12-09|Method for producing a three-dimensional object|
    AU2016371224A| AU2016371224B2|2015-12-17|2016-12-09|Method for producing a three-dimensional object|
    KR1020187018828A| KR102226189B1|2015-12-17|2016-12-09|3D object manufacturing method|
    CA3008898A| CA3008898A1|2015-12-17|2016-12-09|Method for producing a three-dimensional object|
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