• 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:
    A geosynthetic liner may be formed of sheets of substantially liquid impermeable synthetic material such as high density polyethylene. The adjacent edges of adjacent sheets may be lapped over one another to form a lapped joint. The lapped joint may be covered by a relatively narrow seam cover which seals the region between the two sheets. The cover may be formed of a geomembrane layer over a clay layer. The clay layer may be formed of particles of bentonite which are adhesively secured to the geomembrane layer. Thus, the geomembrane liner seam may be sealed by simply unrolling the cover over the lapped joint and covering the sheets and the cover with a layer of overburden.
    公开号:US20010001683A1
    申请号:US09/749,117
    申请日:2000-12-27
    公开日:2001-05-24
    发明作者:Michael Mathieson
    申请人:Mathieson Michael C.；
    IPC主号:D06H5-00
    专利说明:
    [0001] This invention relates generally to membrane or sheet liners which may be used, for example, to line containment structures, such as landfills for hazardous or non-hazardous waste disposal, water or other fluid containments or to cover such containments to prevent the encroachment of storm water or the escape of odors and fumes. [0001]
    [0002] Conventionally, earthen structures or natural depressions form the containment volume. Substantially impermeable membrane sheets are then utilized to reduce or minimize leakage of the contained material. These substantially impermeable sheets are frequently described as “geomembranes”. [0002]
    [0003] The size and/or geometry of the containment may require that a multiplicity of membrane sheets be used to cover the total area to be protected from excessive leakage. As a result a number of seams between edges of adjacent membrane sheets must be sealed to assure the desired reduction of containment leakage. [0003]
    [0004] The edges of adjoining membrane sheets may be heat fused and thereby sealed and joined together in a leakproof fashion. Alternatively, adhesives or chemicals that fuse adjoining edges together may be used to join and seal the edges of some types of membranes. [0004]
    [0005] Forming an adequately effective, leak resistant containment membrane seal is labor intensive and requires significant skills, training, tools, supplies and equipment. Commonly used sealing procedures may be adversely affected by moisture and inclement weather. [0005]
    [0006] Thus, there is a need for an effective, suitably leak-resistant seam that reduces the disadvantages of the current practices. [0006] SUMMARY
    [0007] In accordance with one aspect, a geosynthetic liner includes substantially liquid impermeable first and second liner sheets. A lapped region is defined wherein a portion of the first liner sheet overlaps a portion of the second liner sheet. A seam cover is positioned over the lapped region. The cover includes a layer of clay and a geomembrane layer over the clay layer. [0007]
    [0008] Other aspects are set forth in the accompanying detailed description and claims. [0008] BRIEF DESCRIPTION OF THE DRAWINGS
    [0009] FIG. 1 is a cross-sectional view of a liner in accordance with one embodiment of the present invention; [0009]
    [0010] FIG. 2 is an enlarged cross-sectional view through a portion of the liner shown in FIG. 1; [0010]
    [0011] FIG. 3 is an enlarged cross-sectional view corresponding to FIG. 2 after overburden has been applied; and [0011]
    [0012] FIG. 4 is a cross-sectional view of a liner in accordance with another embodiment of the present invention. [0012] DETAILED DESCRIPTION
    [0013] A geosynthetic liner [0013] 10, shown in FIG. 1, may be formed in a void 15 in the earth 16. The void 15 may be natural or may be man-made for example by digging a hole or forming an encircling berm. In another embodiment, shown in FIG. 4, a liner 10 may form a cap or cover over an area, such as a landfill 34, that protrudes upwardly as indicated at 32.
    [0014] A substantially liquid impermeable layer [0014] 12 may be formed of a substantially liquid impermeable material such as high density polyethylene (HDPE). A number of plastic barrier materials are well known for forming liners in earthen containments for reducing or eliminating leakage.
    [0015] A material (not shown) may be contained within the void [0015] 15 formed by the liner 10. The material may be waste material as is common in waste containment areas or landfills. In other embodiments, the liner 12 may contain a liquid such as water for storage purposes. Those skilled in the art will appreciate that there are a wide variety of uses for substantially liquid impermeable geosynthetic liners.
    [0016] The liner [0016] 10 may be covered by overburden 14. The overburden may be relatively loose soil which has been deposited over the liner after the liner is installed. However, other material, including waste material, may be used as overburden.
    [0017] The liner [0017] 10 may be formed from a plurality of elongate sheets of substantially liquid impermeable material. Adjacent sheets, such as the sheets 18 and 20, may be lapped one on top of the other to form a lapped joint 28, as shown in FIG. 2. The joint 28 includes lapped sheet edges 27 and 29. Conventionally, lapped joints are heat sealed using a welding technique such as wedge welding.
    [0018] However, in accordance with one embodiment of the present invention, at least one of the joints [0018] 28 is sealed by overlaying an elongate geosynthetic clay liner (GCL) cover or strip 22. The strip 22 may include an upper substantially liquid impermeable membrane layer 26 which may be made of high density polyethylene as one example. Adhered to the layer 26 is a clay layer 24, for example containing sodium bentonite clay material and adhesive. The adhesive may adhesively secure the clay layer 24 to the layer 26. When exposed to liquid, the layer 24 hydrates and forms a substantially liquid tight, leak resistant seal to the underlying sheets 18 and 20. In one embodiment of the present invention, the strip 22 may have a permeability of less than 4×10−14 m/sec.
    [0019] Thus, by simply positioning the strip [0019] 22 atop the joint 28, a substantially liquid tight seal may be achieved. The seal is not adversely affected by the presence of liquid on top of the sheets 18 and 20 prior to positioning the sealing strip 22. Thus, with one embodiment of the present invention, seaming may be undertaken even in light rain or light snow conditions.
    [0020] Referring now to FIG. 3, overburden [0020] 14 may be applied over the layer 12 to hold the strip 22 in position. Advantageously, the overburden 14, such as loose soil, is carefully applied so as not to disturb the positioning of the strip 22 with respect to the rest of the liner 10.
    [0021] Advantageously, the strip [0021] 22 is formed of GundSeal® brand material available from GSE Lining Technology, Inc., Houston, Tex. The manufacturing of the material is described for example in U.S. Pat. No. 4,693,923 which is hereby expressly incorporated by reference. The clay layer 24 material may include non-hydrated montmorillonite (sodium bentonite) in accordance with one embodiment of the present invention. The clay may be initially composed of discrete clay particles. The surface of the layer 26 which contacts the clay layer 24 may be roughened to improve clay adhesion or friction at any interface with other materials.
    [0022] The adhesive which secures the clay layer [0022] 24 to the layer 26 may be formed of a variety of adhesives. Suitable adhesives including asphalt with or without fillers and elastomers, butylene, butyl rubber, acrylic, propene, styrene/butadiene, nitrile, vinyl, water soluble cellulosic, saccharides, gums or proteins.
    [0023] In accordance with one embodiment of the present invention, the adhesive solids are present in concentrations from about 5 to about 100 percent by weight and are mixed with bentonite in ratios between 3 and 50 percent by weight of adhesive relative to the bentonite particles. One pound of sodium bentonite may be applied per square foot of geomembrane layer [0023] 26, in accordance with one embodiment. The layer 26 may be from 0.3 to 2 mm. in thickness as examples. The montmorillonite content may be at least 90% and the fluid loss (ASTM D5891) may be less than 18 ml. The free swell (ASTM D5890) may be more than 24 ml.
    [0024] The strip [0024] 22 may be formed in rolls and may simply be unrolled over the joint 28. A section at the end of a roll of the strip 22 may be lapped over a section at the beginning of the next roll.
    [0025] In accordance with one example of the present invention, the lap joint [0025] 28 may be of a width of about four to six inches. The strip 22 may be of a width on the order of three to four feet. Thus, in some advantageous embodiments of the present invention, the width of the strip 22 is more than five times the width of the lapped joint 28. In some embodiments of the present invention, the layer 26 may be formed of the same material that forms the sheets that make up the liner 10.
    [0026] With embodiments of the present invention, a highly stable, liquid penetration resistant seam may be formed without necessitating the labor intensive exercise of heat seaming adjacent sheets to one another. In addition, the use of the clay tends to be more simple since, once it is pressed onto the lapped joint [0026] 28, the clay tends to create an effective seal. This is at least in part due to the fact that the clay layer 24 used in the strip 22 hydrates when exposed to water and water-based mixtures. Thus, in some embodiments of the present invention, a lower cost seam may be produced which is at least as reliable as existing techniques.
    [0027] Where the liner [0027] 12 is white surfaced to minimize thermal expansion, the layer 26 may also be white surfaced. The upper or lower surface of the layer 26 may also be textured.
    [0028] While the present invention has been described with respect to a limited number of embodiments, those skilled in the art will appreciate numerous modifications and variations therefrom. It is intended that the appended claims cover all such modifications and variations as fall within the true spirit and scope of this present invention. [0028]
    权利要求:
    Claims (21)
    [1" id="US-20010001683-A1-CLM-00001] 1. An geosynthetic liner comprising:
    substantially liquid impermeable first and second liner sheets;
    a lapped region wherein a portion of said first liner sheet overlaps a portion of said second liner sheet; and
    a seam cover positioned over said lapped region, said cover including a clay layer and a geomembrane layer over said clay layer.
    [2" id="US-20010001683-A1-CLM-00002] 2. The liner of
    claim 1 wherein said clay layer is formed of discrete clay particles.
    [3" id="US-20010001683-A1-CLM-00003] 3. The liner of
    claim 2 wherein said clay layer is formed of bentonite.
    [4" id="US-20010001683-A1-CLM-00004] 4. The liner of
    claim 3 wherein said clay layer is adhesively secured to said geomembrane layer.
    [5" id="US-20010001683-A1-CLM-00005] 5. The liner of
    claim 1 wherein said cover is in the form of an elongate strip.
    [6" id="US-20010001683-A1-CLM-00006] 6. The liner of
    claim 1 wherein said geomembrane layer is substantially liquid impermeable.
    [7" id="US-20010001683-A1-CLM-00007] 7. The liner of
    claim 6 wherein the width of said cover is greater than five times the width of said lapped region.
    [8" id="US-20010001683-A1-CLM-00008] 8. The liner of
    claim 1 including overburden covering said seam cover.
    [9" id="US-20010001683-A1-CLM-00009] 9. The liner of
    claim 8 wherein said overburden is formed of loose soil.
    [10" id="US-20010001683-A1-CLM-00010] 10. The liner of
    claim 1 wherein said cover seals the lapped region preventing the passage of fluids through the lapped region.
    [11" id="US-20010001683-A1-CLM-00011] 11. A method of lining an earthen area comprising:
    covering said area with at least two substantially liquid impermeable liner sheets;
    overlapping an edge of one of said sheets over an edge of the other of said sheets to form a lapped region; and
    covering said lapped region with a cover including a geomembrane layer over a clay layer.
    [12" id="US-20010001683-A1-CLM-00012] 12. The method of
    claim 11 including covering said cover with an overburden layer.
    [13" id="US-20010001683-A1-CLM-00013] 13. The method of
    claim 11 including adhesively securing said clay layer to said geomembrane layer.
    [14" id="US-20010001683-A1-CLM-00014] 14. The method of
    claim 11 including centering said cover on the edge of the uppermost of said liner sheets.
    [15" id="US-20010001683-A1-CLM-00015] 15. The method of
    claim 11 wherein covering includes unrolling a roll of cover material over said lapped region.
    [16" id="US-20010001683-A1-CLM-00016] 16. The method of
    claim 11 including forming said cover of an admixture of clay particles and adhesive.
    [17" id="US-20010001683-A1-CLM-00017] 17. A method of lining an earthen area comprising:
    covering said area with at least two substantially liquid impermeable liner sheets;
    forming a seam between said sheets; and
    covering said seam with a layer including a liquid swellable clay.
    [18" id="US-20010001683-A1-CLM-00018] 18. The method of
    claim 17 further including covering said clay layer with a substantially liquid impermeable membrane.
    [19" id="US-20010001683-A1-CLM-00019] 19. The method of
    claim 18 including adhesively securing said membrane to said clay layer.
    [20" id="US-20010001683-A1-CLM-00020] 20. The method of
    claim 18 including covering said membrane with overburden.
    [21" id="US-20010001683-A1-CLM-00021] 21. The method of
    claim 16 wherein forming a seam includes forming a lapped seam.
    类似技术:
    公开号 | 公开日 | 专利标题
    US6197398B1|2001-03-06|Earthen liner with clay seam cover
    US6238766B1|2001-05-29|Moisture barrier protection system and method
    US4917537A|1990-04-17|Fluid impervious, multiple panel lining system
    US7437855B2|2008-10-21|Water and water vapor structural barrier
    CN101748757B|2011-12-14|Construction method of bentonite waterproof blankets
    USRE35272E|1996-06-11|Apparatus and method for lining landfills, reservoirs, hazardous waste disposal sites and the like
    US8361261B2|2013-01-29|Method for manufacturing a secondary containment liner system
    US5140848A|1992-08-25|Plastic liner pipe penetration adapter
    RU2278202C1|2006-06-20|Control joint for water-tight channel and water pool lining
    GB2136861A|1984-09-26|Process for the construction of insulated sites in particular for the discharge of polluant products or the formation of impervious barricades or barriers, and works thereby constructed
    US5375733A|1994-12-27|Corner lock for lining tank bottoms
    IE904408A1|1991-10-09|Bituminous welded sheet for the protection of buildings
    KR20090011441A|2009-02-02|Bentonite sheet and method using the sheet
    CN207105806U|2018-03-16|A kind of wet-laying self-adhesive coiled material
    JP2001323432A|2001-11-22|Impervious structure of revetment
    JP2005048518A|2005-02-24|Controlled type revetment
    KR100956144B1|2010-05-06|High elastic composite waterproof sheet
    CN212827208U|2021-03-30|PVC pre-paved anti-sticking inner-reinforced waterproof roll
    US20030198521A1|2003-10-23|Enhanced Subtitle D design standard composite liner
    Henshell2016|The Manual of Below-Grade Waterproofing
    CN212827206U|2021-03-30|Wet anti-waterproofing membrane that glues of shop PVC in advance that paves
    CN212827207U|2021-03-30|PVC pre-paved anti-sticking waterproof coiled material
    AU2009266426A1|2010-01-07|Membrane
    WO1995027616A1|1995-10-19|Resealable liner
    JP3222421B2|2001-10-29|Impermeable method
    同族专利:
    公开号 | 公开日
    AU1089501A|2001-06-04|
    CA2394628C|2005-11-22|
    DE60025034D1|2006-01-26|
    US6197398B1|2001-03-06|
    AT313667T|2006-01-15|
    DE60025034T2|2006-07-13|
    EP1234078A1|2002-08-28|
    US6303204B2|2001-10-16|
    CA2394628A1|2001-05-31|
    EP1234078B1|2005-12-21|
    WO2001038647A1|2001-05-31|
    PE20010923A1|2001-09-06|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US7654053B1|2005-04-01|2010-02-02|Michael Bauer|Concrete vapor barrier integrity system|US4693923A|1985-11-22|1987-09-15|Mcgroarty Bryan M|Water barrier|
    IT1240359B|1990-03-28|1993-12-10|Servizi Ecologici S R L Ora Se|COMPOSITE, SELF-SEALING MEMBRANE, ESPECIALLY FOR THE WATERPROOFING OF MANUFACTURES, PITS, TANKS AND SIMILAR AND ITS MANUFACTURING PROCESS.|
    DE9110502U1|1991-08-24|1991-10-31|Kroeber, Egon, 5411 Alsbach, De||
    US5529438A|1993-01-19|1996-06-25|Clem Environmental Corp.|Geosynthetic clay liner with modified edges for improved sealing|
    US5360294A|1993-01-19|1994-11-01|James Clem Corporation|Bentonite liner with drainage system protection|US6558079B1|2000-02-22|2003-05-06|Epi Environmental Technologies Inc.|Method and apparatus for covering landfill|
    EP1256661A3|2001-02-20|2003-01-02|Beluso Consult & Marketing GmbH & Co. KG|Device for sealing surfaces, especially of dumps|
    DE60201292T2|2001-05-08|2006-02-23|Rowe, Ivan|Hydraulic seal|
    US7850387B2|2005-01-06|2010-12-14|The Boeing Company|System for reducing stress concentrations in lap joints|
    US8100605B2|2007-05-21|2012-01-24|University Of Maine System Board Of Trustees|Zeolite composite materials for waste odor control|
    US20100189509A1|2009-01-23|2010-07-29|Amcol International Corporation|Geotechnical applications of improved nanocomposites|
    CA2825602C|2011-01-28|2015-09-29|Halliburton Energy Services, Inc.|Improved bentonite barrier compositions and related geosynthetic clay liners for use in containment applications|
    WO2012101412A1|2011-01-28|2012-08-02|Halliburton Energy Services, Inc.|Improved bentonite barrier compositions and methods of use in containment applications|
    US9758432B2|2011-01-28|2017-09-12|Halliburton Energy Services, Inc.|Methods of using improved bentonite barrier compositions and related geosynthetic clay liners|
    ITBO20110232A1|2011-04-28|2012-10-29|Imperfoglia S R L Unipersonale|COMPOSITE MATERIAL FOR WATERPROOFING CIVIL AND ENVIRONMENTAL ENGINEERING, PROCEDURE AND SYSTEM FOR THE PRODUCTION OF THE SAME|
    US9267231B2|2013-02-27|2016-02-23|Watershed Geosynthetics Llc|Methods for joining strips of synthetic turf and for covering a site with synthetic turf|
    US10968596B2|2019-01-29|2021-04-06|Amir Rudyan|Below grade, blind side, dual waterproofing membrane assembly incorporating a sheet membrane with adhesive to fully bond to concrete/shotcrete, and a method of making, and using same|
    CN112609804A|2020-10-29|2021-04-06|杭州青桐林园林设计有限公司|Supplementary construction equipment of ecological pond of log landscape|
    法律状态:
    2001-09-27| STCF| Information on status: patent grant|Free format text: PATENTED CASE |
    2002-02-27| AS| Assignment|Owner name: BANK OF AMERICA, N.A., CALIFORNIA Free format text: SECURITY INTEREST;ASSIGNOR:GSE LINING TECHNOLOGY, INC.;REEL/FRAME:012641/0785 Effective date: 20020204 |
    2004-05-27| AS| Assignment|Owner name: GSE LINING TECHNOLOGY, INC., TEXAS Free format text: RELEASE AND DISCHARGE OF SECURITY AGREEMENT, PREVIOUSLY RECORDED AT REEL/FRAME #12641/0785.;ASSIGNOR:BANK OF AMERICA, N.A.;REEL/FRAME:015377/0060 Effective date: 20040518 Owner name: UBS AG, STAMFORD BRANCH, CONNECTICUT Free format text: SECURITY INTEREST;ASSIGNORS:GUNDLE/SLT ENVIRONMENTAL, INC.;GSE LINING TECHNOLOGY, INC.;REEL/FRAME:015377/0116 Effective date: 20040521 |
    2005-04-06| FPAY| Fee payment|Year of fee payment: 4 |
    2007-08-03| AS| Assignment|Owner name: GSE LINING TECHNOLOGY, INC., TEXAS Free format text: RELEASE OF SECURITY INTEREST;ASSIGNOR:UBS, AG STAMFORD BRANCH;REEL/FRAME:019679/0633 Effective date: 20070727 Owner name: GUNDLE/SLT ENVIRONMENTAL, INC., TEXAS Free format text: RELEASE OF SECURITY INTEREST;ASSIGNOR:UBS, AG STAMFORD BRANCH;REEL/FRAME:019679/0633 Effective date: 20070727 Owner name: BANK OF AMERICA, N.A., AS AGENT, TEXAS Free format text: SECURITY INTEREST;ASSIGNOR:GSE LINING TECHNOLOGY, INC.;REEL/FRAME:019679/0720 Effective date: 20070727 |
    2009-04-16| FPAY| Fee payment|Year of fee payment: 8 |
    2010-06-17| AS| Assignment|Owner name: GSE LINING TECHNOLOGY, LLC,TEXAS Free format text: CONVERSION OF A DELAWARE CORPORATION UNDER THE NAME OF "GSE LINING TECHNOLOGY, INC." TO A DELAWARE LIMITED LIABILITY COMPANY, CHANGING ITS NAME FROM "GSE LINING TECHNOLOGY, INC." TO "GSE LINING TECHNOLOGY, LLC";ASSIGNOR:GSE LINING TECHNOLOGY, INC.;REEL/FRAME:024547/0891 Effective date: 20091218 Owner name: GSE LINING TECHNOLOGY, LLC, TEXAS Free format text: CONVERSION OF A DELAWARE CORPORATION UNDER THE NAME OF "GSE LINING TECHNOLOGY, INC." TO A DELAWARE LIMITED LIABILITY COMPANY, CHANGING ITS NAME FROM "GSE LINING TECHNOLOGY, INC." TO "GSE LINING TECHNOLOGY, LLC";ASSIGNOR:GSE LINING TECHNOLOGY, INC.;REEL/FRAME:024547/0891 Effective date: 20091218 |
    2011-06-21| AS| Assignment|Owner name: JEFFERIES FINANCE LLC, NEW YORK Free format text: PATENT SECURITY AGREEMENT (2ND LIEN);ASSIGNOR:GSE LINING TECHNOLOGY, LLC;REEL/FRAME:026468/0510 Effective date: 20110527 Owner name: GENERAL ELECTRIC CAPITAL CORPORATION, AS ADMINISTR Free format text: PATENT SECURITY AGREEMENT (FIRST LIEN);ASSIGNOR:GSE LINING TECHNOLOGY, LLC;REEL/FRAME:026467/0463 Effective date: 20110527 |
    2012-04-19| AS| Assignment|Owner name: GSE LINING TECHNOLOGY, LLC, TEXAS Free format text: RELEASE OF SECURITY INTEREST RECORDED AT REEL/FRAME 026468/0510;ASSIGNOR:JEFFERIES FINANCE LLC, AS AGENT;REEL/FRAME:028074/0706 Effective date: 20120418 |
    2013-02-13| AS| Assignment|Owner name: GSE ENVIRONMENTAL, LLC, TEXAS Free format text: CHANGE OF NAME;ASSIGNOR:GSE LINING TECHNOLOGY, LLC;REEL/FRAME:029803/0556 Effective date: 20120905 |
    2013-04-16| FPAY| Fee payment|Year of fee payment: 12 |
    2013-10-07| AS| Assignment|Owner name: GENERAL ELECTRIC CAPITAL CORPORATION, AS AGENT, IL Free format text: SECURITY AGREEMENT;ASSIGNORS:GSE ENVIRONMENTAL, LLC (FKA GSE LINING TECHNOLOGY, INC.);GSE ENVIRONMENTAL, INC.;SYNTEC LLC;REEL/FRAME:031360/0086 Effective date: 20131004 |
    2014-01-14| AS| Assignment|Owner name: GSE ENVIRONMENTAL, LLC (FKA GSE LINING TECHNOLOGY, Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:GENERAL ELECTRIC CAPITAL CORPORATION, AS ADMINISTRATIVE AGENT;REEL/FRAME:031964/0240 Effective date: 20140110 Owner name: SYNTAC LLC, TEXAS Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:GENERAL ELECTRIC CAPITAL CORPORATION, AS ADMINISTRATIVE AGENT;REEL/FRAME:031964/0240 Effective date: 20140110 Owner name: GSE ENVIRONMENTAL, INC., TEXAS Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:GENERAL ELECTRIC CAPITAL CORPORATION, AS ADMINISTRATIVE AGENT;REEL/FRAME:031964/0240 Effective date: 20140110 Owner name: GENERAL ELECTRIC CAPITAL CORPORATION, AS ADMINISTR Free format text: SECURITY AGREEMENT;ASSIGNORS:GSE ENVIRONMENTAL, LLC (FKA GSE LINING TECHNOLOGY, INC.);GSE ENVIRONMENTAL, INC.;SYNTEC LLC;REEL/FRAME:032018/0862 Effective date: 20140110 |
    2014-08-11| AS| Assignment|Owner name: BLACKROCK KELSO CAPITAL CORPORATION, AS ADMINISTRA Free format text: SECURITY INTEREST;ASSIGNOR:GSE ENVIRONMENTAL, LLC;REEL/FRAME:033511/0004 Effective date: 20140811 |
    2014-10-28| AS| Assignment|Owner name: BANK OF AMERICA, N.A., TEXAS Free format text: SECURITY INTEREST;ASSIGNOR:GSE ENVIRONMENTAL, LLC;REEL/FRAME:034052/0271 Effective date: 20140811 |
    2017-12-21| AS| Assignment|Owner name: GSE ENVIRONMENTAL, LLC, TEXAS Free format text: RELEASE OF PATENT SECURITY AGREEMENT DATED AUGUST 11, 2014 AND RECORDED ON OCTOBER 28, 2014 ON REEL 034052, FRAME 271;ASSIGNOR:BANK OF AMERICA, N.A.;REEL/FRAME:044940/0623 Effective date: 20171220 Owner name: GSE ENVIRONMENTAL, LLC, TEXAS Free format text: RELEASE OF PATENT SECURITY AGREEMENT DATED AUGUST 11, 2014 AND RECORDED ON AUGUST 11, 2014 AT REEL/FRAME NO. 033511/0004;ASSIGNOR:BLACKROCK CAPITAL INVESTMENT CORPORATION (F/K/A BLACKROCK KELSO CAPITAL CORPORATION);REEL/FRAME:044940/0678 Effective date: 20171220 |
    2018-02-06| AS| Assignment|Owner name: NATIONAL BANK OF CANADA, CANADA Free format text: SECURITY INTEREST;ASSIGNOR:GSE ENVIRONMENTAL LLC;REEL/FRAME:044845/0306 Effective date: 20180124 |
    2021-06-01| AS| Assignment|Owner name: SOLMAX GEOSYNTHETICS, LLC, FORMERLY KNOWN AS GSE ENVIRONMENTAL, LLC, TEXAS Free format text: RELEASE BY SECURED PARTY;ASSIGNOR:NATIONAL BANK OF CANADA;REEL/FRAME:056401/0960 Effective date: 20210528 |
    优先权:
    申请号 | 申请日 | 专利标题
    US09/444,892|US6197398B1|1999-11-22|1999-11-22|Earthen liner with clay seam cover|
    US09/749,117|US6303204B2|1999-11-22|2000-12-27|Earthen liner with clay seam cover|US09/749,117| US6303204B2|1999-11-22|2000-12-27|Earthen liner with clay seam cover|
    [返回顶部]