• 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:
    The invention relates to a test device (1) for measuring a permeability and / or homogeneity of a gas and / or liquid-permeable filter (14) or catalyst, in particular a filter (14) or catalyst of an exhaust tract of a motor vehicle. According to the invention, an optionally flexible housing (2) with a first gas- and / or liquid-permeable end (3) and a second end (4) and at least one pressure sensor (5) arranged inside the housing (2) and at least one control device (6) provided with the control device (6) air and / or a liquid with variably adjustable volume or mass flow or pressure to the first end (3) of the housing (2) and / or with variably adjustable volume or mass flow or negative pressure of this way is transportable. With a test device (1) according to the invention, a permeability and / or homogeneity of the filter (14) can be determined precisely with a simple design thereof. Furthermore, the invention relates to a method for measuring a permeability and / or homogeneity of a gas and / or liquid-permeable filter (14) or catalyst.
    公开号:AT510407A4
    申请号:T2072011
    申请日:2011-02-17
    公开日:2012-04-15
    发明作者:
    申请人:Mayer Hanspeter Dipl Ing；
    IPC主号:
    专利说明:

    • «» »
    • ·
    1
    I am auditing in good faith
    The invention relates to a test device for measuring a permeability and / or homogeneity of a gas and / or liquid permeable filter or catalytic converter, in particular a filter or catalytic converter of an exhaust gas tract of a motor vehicle.
    Furthermore, the invention relates to a method for measuring a permeability and / or homogeneity of a gas and / or liquid-permeable filter or catalyst, in particular a filter or catalytic converter installed in an exhaust tract of a motor vehicle.
    Exhaust gases of diesel-powered motor vehicle engines, but also gasoline engines or engines of other internal combustion engines and of burner and / or heating or cogeneration plants are usually cleaned to protect the environment. 15 Here, depending on the exhaust gas composition, exhaust gas temperature and desired cleaning result, various methods are used. Common to the individual methods is that gas-permeable filters and / or catalysts are used, for example, to filter soot particles from an exhaust gas or to catalytically convert toxic constituents of an exhaust gas into less toxic or non-toxic components 20.
    If exhaust gas flows in an exhaust tract and encounters a filter or catalytic converter, the exhaust gas experiences a back pressure. This back pressure is a minimum for a new filter or catalyst. As the duration of use of a filter or catalytic converter 25 increases, it can be increasingly loaded by particles or suspended matter present in the exhaust gas, as a result of which the counterpressure increases. Typical examples relate to a loading of a filter in the exhaust gas of a diesel-powered motor vehicle by increasing soot and / or ash load. An increase in backpressure with increasing service life of a filter or catalyst can be tolerated to some extent. However, as the counterpressure increases, engine power decreases and / or fuel consumption increases.
    The filters or catalysts must therefore always be cleaned at regular intervals. For example, in diesel-powered vehicles in one
    2
    Filter adhering soot particles are burned and thus converted into gaseous components, when the filter is preceded by an oxidation catalyst, the nitrogen monoxide converts to nitrogen dioxide, which reacts at certain temperatures with the soot particles to form gaseous components. However, filters and catalysts tend to block in passively regenerating systems with increasing operating time. This is all the more true for actively regenerating systems in which the filter or catalyst from time to time z. B. is regenerated by actively heating the filter or catalyst.
    There are already approaches to continuously monitor a back pressure by on-board diagnostics during operation of a motor vehicle. Corresponding systems, however, are in their infancy and are not yet mature. For the majority of filters and catalysts, it is necessary to check them separately during cleaning or maintenance. On the one hand, a permeability of the filter or catalyst to be cleaned is checked before cleaning. On the other hand, after cleaning, the cleaning result is checked by examining the filter or catalyst again with respect to a permeability of a gas or optionally a liquid. For this purpose, remove the filters or catalytic converters from the exhaust system and examine or test them in a suitable device.
    Known devices for measuring a permeability of a gas and / or liquid-permeable filter or catalyst are constructed voluminous and allow only a test of a filter or catalyst in the disassembled state, wherein an entire filter cross-section is tested for a back pressure. This is done z. B. by pressure sensors in the exhaust stream or on test facilities, in which a filter to be tested clamped and the entire filter cross-section is flowed through with a test medium. It would be desirable, however, to have available a device with which a filter can be accurately tested even when installed or directly in the exhaust system. It would be unnecessary then a complex removal of the filter or catalyst. Another disadvantage of known devices is that they only provide inaccurate test results; a resolution of an occurring back pressure is either inaccurate or fluctuating due to an uneven flow. Moreover, with respect to wall-flow filters, only one • • • < «· 4« > · * Λ · · · «« 34 3
    Measurement of a filter or catalyst over its entire cross section possible. However, it would be advantageous if individual areas of a surface could also be measured separately in order to be able to detect individual problem zones in a filter or catalytic converter in segments.
    The object of the invention is to provide a test device of the type mentioned, in which in particular eliminates the disadvantages set out above or at least reduced.
    Another object is to provide a method of the type mentioned, with the permeability and / or homogeneity of a filter or catalyst can be checked or determined in areas with high accuracy or determined.
    The object of the disclosure of an improved test device is inventively achieved in that in a test device of the type mentioned an optionally flexible housing having a first gas and / or liquid-permeable end and a second end and at least one disposed within the housing pressure sensor and at least one control device are provided, with the control device air and / or a liquid with variably adjustable volume or mass flow or pressure to the first end of the housing and / or with variably adjustable volume or mass flow or negative pressure of this away is transportable.
    An advantage achieved by the invention is to be seen in the fact that a simply constructed test device is provided, which may be designed in particular as a handheld device, thus is small and easy to handle. Alternatively, the test device can also be designed as a small-sized sensor unit for automated testing and in use z. B. be made with a controllable robot arm to a filter or catalyst. In both cases, the test device can be readily made to a surface of a filter or catalytic converter which is fastened in an exhaust gas tract of a motor vehicle or another exhaust gas tract. This means for motor vehicles, that usually only a clamp to solve and the exhaust system is open to check a filter permeability can.
    4
    In particular, for hard to reach places, the housing can also be flexible, so that filters are verifiable, which are located in such places.
    The test device according to the invention has a pressure sensor and in connection therewith a control device for the variable adjustment of a volume or mass flow or overpressure or underpressure at the first end of the housing. The pressure sensor and the control device are connected to a computing unit, for example a microprocessor, in connection, which enables a simple calibration of the test device. For this purpose, the test device is made with the first end of the housing to a dense surface and, for example, subjected to an air flow, the static pressure of z. B. causes 0.6 bar overpressure. The pressure in the housing serves as a reference point for a 100% blocking of a filter.
    As a second reference point, a new filter or catalyst is used, which generates a minimum of back pressure and in this case also flows through an adjustable volume flow of compressed air and is applied; the volumetric flow is then changed until it represents a quantity which can just be reliably measured or reliably measured (eg 0.01 bar). With the maximum backpressure and the minimum exhaust gas volume flow, each filter or catalyst can now be measured. Depending on the contamination, measured values between 0.01 and 0.6 bar occur. Filters that produce lower readings may be broken or blown.
    It is also possible to continuously increase the volume flow starting from a minimum value and to increase it to a maximum backpressure value. From such a measurement, a throttle curve of a test specimen can be determined, which can give more information about the nature and extent of contamination thereof.
    In order to obtain the most accurate measurement result, the first end of the housing is circumferentially preferably surrounded by a seal.
    The first end of the housing may for different applications with a different cross-sectional area of z. B. 10 mm2 to 500 cm2 be formed. An exact size is based on a filter size, a volume or mass flow used and expected back pressures. In particular for conventional filters of motor vehicles, it is expedient and preferred that the first end of the housing is formed with a cross-sectional area of 5 cm 2 to 30 cm 2, preferably 10 cm 2 to 20 cm 2. By a correspondingly small design of a cross-sectional area, all conventional filters or catalysts can be checked, in particular with respect to motor vehicles, since these are generally designed with much larger end face or end-side cross-sectional areas. In addition, this also gives the possibility, in particular with regard to wall-flow filters, to check individual filters or catalysts in segments or regions. This may be particularly important when a filter is exposed to uneven loads when viewed over the cross-section. In addition, it can be determined with new filters or catalysts whether they have the same properties in individual areas or whether a coating of a filter in individual segments is uniform, by a segment-by-segment test is performed.
    The housing, which may be flexible as mentioned, may be formed with any desired shape, but is advantageously elongate, in particular cylindrical. Apart from peripheral utilities, the test device expediently has a maximum length of about 25 cm, so that it can be easily made with one hand to a filter and optionally introduced into an exhaust system of a motor vehicle. Basically, however, the housing may have a length of 10 mm to 100 cm, depending on whether the device z. B. is used as a small probe or tester for large power plant filter.
    The first end of the housing is gas and / or liquid permeable and may be provided, for example, with a coarse mesh grid. However, it is preferred that the first end is open in cross-section.
    The control device may for example be designed so that it comprises a conveying means which is arranged in the housing, in which case the second end of the housing is also gas and / or liquid permeable. The conveying means may be any pumping or pressure-increasing device, for example an axial fan, which is preferably held with a holder in the region of the second end of the housing. In such a design, a small-sized control device is arranged on the outside of the housing, with which on the one hand the conveyor or axial fan is supplied with power and controlled and on the other hand measurement data • * • t * * * # * I l * * «« ·· > * * * T · · ** «· · · 6 queried and evaluated by the pressure sensor. The test device is elongated in this embodiment and not longer than 25 cm. The tester also has a low weight of less than 2 kg and can be transported without much trouble.
    In an alternative embodiment, the housing is closed in the region of the second end of the housing and communicates via a line with the control device. The line preferably opens at the second end of the housing in the housing. The control device can be arranged in this embodiment in a container with a handle or strap, the container having on the outside a compressed air connection and optionally a power connection. In this case, the testing device is divided into two separate subunits, wherein a subunit represents a measuring head and in a container, as a further subunit, the components required for the generation of a volume or mass flow or overpressure or optionally negative pressure including a computing unit for the evaluation of Measurement results are arranged. The formation of the container with a compressed air connection and optionally a power connection makes it possible to dispense with a separate funding. On the contrary, the compressed air line usually present in workshops can be supplied with the compressed air required for the measurement and possibly previous calibration. The control device has expediently in this case, a throttle and / or a valve, so that a predetermined volume or mass flow or pressure of z. B. a maximum of 0.5 bar is adjustable.
    In a test device according to the invention, an elastic rod-shaped probe may additionally be provided, which has a diameter of less than 1 mm and is detachably or rollably arranged on the housing. With such a probe can be found in particular in wall-flow filter easily by introducing it into a filter or catalyst or a cell thereof, from which depth the filter or catalyst is strongly blocked. This allows more information about a quality of a filter or catalyst or their contamination in the depth of the filter cells.
    The further object of the invention is achieved in a method of the type mentioned above, if an optionally flexible housing with a first gas and / or liquid-permeable end and a second end with the first end to a greater than a cross section of the first end formed gas - And / or liquid-permeable surface of the filter or catalyst is turned on, after which the housing is applied in the interior with a defined volume or mass flow or 5 overpressure or suppression, so that air or a liquid is pressed or pulled out of the filter or catalyst , And is measured in the housing adjusting pressure, after which from the resulting pressure, a permeability and / or homogeneity of the filter or catalyst is determined. An advantage achieved by means of a method according to the invention can be seen, in particular, in that a permeability and / or homogeneity of a filter or catalyst can be determined precisely in regions in a simple manner. For this purpose, a test device according to the invention is preferably used, wherein the calibration can be carried out as explained above. 15
    It is preferred that the interior of the housing is acted upon with a slight overpressure of 0.1 to 0.6 bar, although a measurement under oppression is possible, especially if a front side is not accessible in the case of a filter, but only one downstream accessible end of the same. 20
    It is preferably provided, in order to increase a quality of a measurement result, that measurements are carried out at different regions of the surface of the filter or catalyst, wherein the measurement results can be averaged if appropriate. This makes it possible to carry out a segmental evaluation of the filter or catalytic converter, in particular in the case of wall-flow filters. An averaging of the measurement results may be expedient to characterize an average state of the filter or catalyst, but also a quality of a filter substrate or a coating of a filter. Other features, advantages and effects of the invention will become apparent from the embodiments illustrated below. In the drawings, to which reference is made, show:
    Fig. 1 is a highly schematic representation of a test device; * 4 * 4 * 4 * * * * * * * * * * t * 1 4 4 4 4 4 4 4 4 4 * 4 44 · 4 «4 * 4 · 8
    2 shows a cross section of a test device and a filter.
    3 shows a variant of a test device;
    Fig. 4 shows a further embodiment of a test device.
    In Fig. 1, a first embodiment of a test device 1 according to the invention is shown in more detail. The testing device 1 comprises a housing 2, which has a first end 3 and a second end 4. Both the first end 3 and the second end 4 of the housing 2 is open, although at one or both of the ends 3, 4 each may be provided a grid to close the interior of the housing 2 to the outside. In any case, however, the first end 3 as well as the second end 4 is permeable with respect to gases or possibly liquids. In the region of the first end 3 of the housing 2, a seal 7 is provided on the circumference, which rests on the housing 2 on the outside and projects slightly beyond the first end 3 of the housing 2. The seal 7 is usually made of a plastic that is suitable for seals.
    The housing 2, however, is preferably made of a steel or an aluminum alloy. However, it is possible in this embodiment as well as in the embodiments shown below that the housing 2 is formed from a flexible material, in particular a plastic, at least in individual sections. With regard to a flexibility of the housing 2 can also be provided that individual segments thereof are mutually pivotable and / or retractable in the manner of a telescope, so that not easily accessible locations of a specimen can be achieved.
    In the interior of the housing 2, which tapers in the embodiment of FIG. 1 from the second end 4 of the housing 2 to the first end 3 of the housing 2, is a conveyor for conveying air or a liquid in the direction of the arrows shown, so from second end 4 of the housing 2 to the first end 3 of the housing 2 or vice versa provided. The conveying means is preferably an axial fan 8, which is fastened with a holder 9 in the region of the upper, second end 4 of the blower 2. In this embodiment, the axial fan 8 is part of a control device 6 for generating a volume or mass flow or overpressure or negative pressure in the housing 2. In the interior of the housing 2, a pressure sensor 5 is further provided below the axial blower 8, adjacent to the first end 3 of the housing 2, is arranged. * · «« · · 1 · · · · · · · 1 9
    On an outer side of the housing 2, a control device 10 is provided, which is in communication with the axial fan 8 and this supplied with power. Furthermore, the axial fan 8 can be controlled via the control device 10, so that an overpressure or, if appropriate, negative pressure can be variably adjusted on a surface 15 of a filter 14 or catalyst. Furthermore, the control device 10 is connected to the pressure sensor 5, so that measurement data of the pressure sensor 5 can be read out. For this purpose, a control unit not shown in detail is additionally provided in the control device 10. In addition, the control device 10 also includes a display 11, via which measurement results can be output or on which measurement results can be read.
    When testing a filter 14 or catalyst, the test device 1 shown in FIG. 1 for calibration with the first end 3 of the housing 2 initially hired to a completely dense surface and the AxialgebFäse 8 generates a static pressure of 0.6 bar, with the pressure sensor 5 is measured or detected. Subsequently, a measurement is carried out on a completely intact or new filter 14 or catalyst, wherein a still reliably measurable or controllable volume or mass flow is adjusted and the resulting pressure is measured. From the reference points thus obtained, it is possible to conclude a loading state or a contamination when measuring a filter 14 or a catalyst to be tested. In a concluding step, a filter 14 or catalyst to be examined is then correspondingly tested, according to which the resulting pressure is used to define a permeability and a loading state of the filter 14 or catalyst or else the homogeneity and uniformity of a filter substrate or a coating can be.
    Due to a choice of a specific diameter or a specific size for a measuring cross-sectional area and a choice of a specific volume flow, a measurement can be standardized and measurement results of different, staggered measurements on the same test piece or measurements can be compared with each other via a production batch of different test pieces.
    FIG. 2 shows a cross-section of a filter 14 to be tested with a test device 1 placed thereon for illustrating the principle, wherein a test element 1 is applied by means of a test device 1
    With * * * # I * * * * * # # * * * * i * * * # I * * i *
    ff * · »···« «· Mil I 10 overpressure. In the housing 2, an overpressure is generated by the axial fan 8, which is degraded depending on the permeability of the filter 14. The less polluted or loaded the filter 14, the more the overpressure is reduced or the delivered gas escapes through the filter 14. In the ideal case or after a successful cleaning, the permeability of the filter 14 corresponds to that of a new filter.
    FIG. 3 shows a further embodiment variant of a test device 1 according to the invention. In this case, the housing 2 is also elongated, but cylindrical. Furthermore, as in the first embodiment according to FIG. 1, a pressure sensor 5 is provided. In contrast to the first embodiment of FIG. 1, however, only the first end 3 of the housing 2 is open. The second end 4 of the housing 2, which is opposite the first end 3 of the housing 2, is substantially closed and is in contact with a conduit 12, via which compressed air is supplied. In this case, a conveying means in the interior of the housing 2 is dispensable. As shown, a throttle and optionally upstream of a valve can be provided along the line 12, so that a defined volume or mass flow or overpressure can be set as in the embodiment according to FIG. The advantage of this embodiment is that it can be used on external duels, for example, a usually existing in a repair workshop compressed air line.
    4, a further embodiment variant is shown, which is similar to the embodiment of FIG. 3. In this case, the housing 2 is connected to a conduit 12 with a container 13 or a suitcase, in which the control device 6 is arranged.
    The control device 6, which is arranged in the suitcase, may in particular comprise a throttle and / or a valve, so that externally supplied via a compressed air connection to the suitcase compressed air to a defined pressure adjustable and in this way the housing 2 zuleitbar. Via a power connection, a power supply unit 16 can be supplied, which is inter alia in communication with a mechanical switch integrated in the seal 7, so that a power supply automatically takes place when it comes into contact with a surface. Furthermore, in the suitcase, in particular, a computing unit (not shown) is provided, which communicates with a compressed air sensor 5 arranged in the housing 2 and, analogously to the embodiment variant shown in FIG. 1, calibrates and evaluates «• · a · i» · « § * * * * * * * a * * * «« · · · · * * * 4 * * 4 4 * 4 · 11
    Measurement results allowed. Common to this embodiment is with that of FIG. 1 that the test device 1 is constructed overall easy and handy and can be transported easily. In contrast to the test device 1 according to FIG. 1, however, a separate conveying means is unnecessary, so that the test device 1 according to FIG. 4 as a whole is even simpler in design. In this regard, can also be provided for easy transport that the housing 2 together with the connecting lines to the suitcase can be stored in this, if not measured.
    With a test device 1 according to FIG. 1 or FIG. 4, it is furthermore possible to measure a throttle curve of a filter 14 or a catalyst by varying the overpressure. Such a throttle curve (back pressure over volume flow) is significant for a quality of the filter 14 or catalyst and can be used in addition to the quality assessment.
    In addition to the already described advantages of a test device 1 according to the invention, it should also be emphasized in particular that the first end 3 of the housing 2 is formed in all variants with a cross section of 5 cm 2 to 30 cm 2. This makes it possible to selectively measure individual areas of the surface in the case of a single filter 14 or catalyst, in particular a wall-flow filter, and thus also to judge the filter 14 or catalyst in terms of quality in terms of area.
    A test device 1 according to the invention is preferably used for the manual measurement of test specimens, but can also be used as a sensor in automated processes. In particular, a test device 1 can be used for monitoring a series production of wall-flow filters in order, for. B. to check a quality. In this case, a plurality of test devices 1 or sensors can be provided, so that a plurality of test objects can be tested simultaneously and / or one test object at several positions or in segments. For example, a measuring head with seven or more sensors can be provided, with each sensor being measured separately and an image of a uniformity of a test object being obtained from the individual results or a statement can be made in this respect. If seven sensors are provided for a parallel measurement, they are arranged as close together as possible, 12 by arranging six sensors at the vertices of a hexagon and the seventh sensor in the center of the hexagon, which results in a compact design.
    权利要求:
    Claims (15)
    [1]
    1. A test device (1) for measuring a permeability and / or homogeneity of a gas and / or liquid-permeable filter (14) or catalyst, in particular a filter (14) or catalyst of an exhaust tract of a motor vehicle, characterized in that an optionally flexible Housing (2) having a first gas and / or liquid-permeable end (3) and a second end (4) and at least one within the housing (2) arranged pressure sensor (5) and at least one control device (6) are provided, wherein the control device (6) air and / or a liquid with variably adjustable volume or mass flow or pressure to the first end (3) of the housing (2) and / or with variably adjustable volume or mass flow or negative pressure of this away is transportable.
    [2]
    Second test device (1) according to claim 1, characterized in that the first end (3) of the housing (2) is peripherally surrounded by a seal (7).
    [3]
    3. testing device (1) according to claim 1 or 2, characterized in that the first end (3) of the housing (2) with a cross-sectional area of 5 cm 2 to 30 cm 2, preferably 10 cm 2 to 20 cm 2, is ausgebiidet.
    [4]
    4. testing device (1) according to one of claims 1 to 3, characterized in that the housing (2) is cylindrical.
    [5]
    5. testing device (1) according to one of claims 1 to 4, characterized in that the first end (3) of the housing (2) is open.
    [6]
    6. testing device (1) according to one of claims 1 to 5, characterized in that the control device (6) comprises a conveying means which is arranged in the housing (2), and that the second end (4) of the housing (2) gas - and / or liquid permeable.
    [7]
    7. testing device (1) according to claim 6, characterized in that the conveying means is an axial fan (8). ························································································································································································
    [8]
    8. testing device (1) according to claim 7, characterized in that the axial fan (8) with a holder (9) in the region of the second end (4) of the housing (2) is held.
    [9]
    9. testing device (1) according to one of claims 1 to 5, characterized in that the housing (2) in the region of the second end (4) of the housing (2) is closed and via a line (10) with the control device (6 ).
    [10]
    10. testing device (1) according to claim 9, characterized in that the line (12) 10 at the second end (4) of the housing (2) in the housing (2) opens.
    [11]
    11. testing device (1) according to claim 9 or 10, characterized in that the control device (6) in a container (13) is arranged with a handle or strap and the container (13) on the outside a compressed air connection and optionally has a 15 power connection.
    [12]
    12. testing device (1) according to one of claims 1 to 11, characterized in that an elastic rod-shaped probe is provided which has a diameter of less than 1 mm and on the housing (2) is arranged detachably or rollable, 20th
    [13]
    13. A method for measuring a permeability and / or homogeneity of a gas and / or liquid-permeable filter (14) or catalyst, in particular a built-in an exhaust tract of a motor vehicle filter (14) or catalyst, characterized in that an optionally flexible housing (2 ) with a first gas- and / or liquid-permeable end (3) and a second end (4) with the first end (3) to a gas and / or liquid-permeable surface formed (greater than a cross section of the first end (3) 15) of the filter (14) or catalyst is employed, after which the housing (2) in the interior is subjected to a defined volume or mass flow or pressure or negative pressure, so that air or a liquid pressed into the filter (14) or catalyst or is pulled out of this, and in the housing (2) adjusting pressure is measured, after which from the self-adjusting pressure a Durchlässigke it and / or homogeneity of the filter (14) or catalyst is determined. · * II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II II. »* * ·« * II * · »· · 15
    [14]
    14. The method according to claim 13, characterized in that the interior of the housing (2) is acted upon with an overpressure of 0.1 to 0.6 bar.
    [15]
    15. The method according to claim 13 or 14, characterized in that at 5 different areas of the surface (15) of the filter (14) or catalyst measurements are performed.
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    同族专利:
    公开号 | 公开日
    AT510407B1|2012-04-15|
    WO2012109691A1|2012-08-23|
    PL2675545T3|2016-12-30|
    EP2675545B1|2016-06-22|
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    EP2425886B1|2010-09-06|2016-06-29|Sartorius Stedim Biotech GmbH|Filter device test apparatus, filter integrity testing method and computer program product|GB2511772B|2013-03-12|2019-01-30|Ceramex Ltd|Testing catalytic efficiency of an exhaust component|
    PL2884066T3|2013-12-11|2017-07-31|Hirtenberger Aktiengesellschaft|Method for diagnosing an object and a device for carrying out the said method|
    PL2884067T3|2013-12-11|2018-08-31|Hirtenberger Aktiengesellschaft|Methods for diagnosing and cleaning an object and device for same|
    DE102019203659A1|2019-03-19|2019-12-24|Audi Ag|Method for testing a filter body for a particle filter and corresponding test arrangement|
    法律状态:
    2013-10-15| PC| Change of the owner|Owner name: HIRTENBERGER AKTIENGESELLSCHAFT, AT Effective date: 20130912 |
    2020-10-15| MM01| Lapse because of not paying annual fees|Effective date: 20200217 |
    优先权:
    申请号 | 申请日 | 专利标题
    AT2072011A|AT510407B1|2011-02-17|2011-02-17|FILTERPRÜFEINRICHTUNG|AT2072011A| AT510407B1|2011-02-17|2011-02-17|FILTERPRÜFEINRICHTUNG|
    PL12713854.3T| PL2675545T3|2011-02-17|2012-02-17|Filter test device|
    PCT/AT2012/050022| WO2012109691A1|2011-02-17|2012-02-17|Filter test device|
    ES12713854.3T| ES2593055T3|2011-02-17|2012-02-17|Filter test device|
    EP12713854.3A| EP2675545B1|2011-02-17|2012-02-17|Filter test device|
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