AU2011220737B2 - Expanded composite filter media including nanofiber matrix and method - Google Patents
Expanded composite filter media including nanofiber matrix and method Download PDFInfo
- Publication number
- AU2011220737B2 AU2011220737B2 AU2011220737A AU2011220737A AU2011220737B2 AU 2011220737 B2 AU2011220737 B2 AU 2011220737B2 AU 2011220737 A AU2011220737 A AU 2011220737A AU 2011220737 A AU2011220737 A AU 2011220737A AU 2011220737 B2 AU2011220737 B2 AU 2011220737B2
- Authority
- AU
- Australia
- Prior art keywords
- fibers
- component
- fine fibers
- substrate
- filter media
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
- 238000000034 method Methods 0.000 title claims description 48
- 239000002121 nanofiber Substances 0.000 title claims description 31
- 239000011159 matrix material Substances 0.000 title claims description 12
- 239000002131 composite material Substances 0.000 title abstract description 145
- 239000000835 fiber Substances 0.000 claims abstract description 467
- 239000000758 substrate Substances 0.000 claims abstract description 141
- 239000000428 dust Substances 0.000 claims abstract description 21
- 229920000642 polymer Polymers 0.000 claims description 70
- 229920000728 polyester Polymers 0.000 claims description 44
- 238000010438 heat treatment Methods 0.000 claims description 37
- 238000001523 electrospinning Methods 0.000 claims description 36
- 230000008018 melting Effects 0.000 claims description 21
- 238000002844 melting Methods 0.000 claims description 21
- 239000000155 melt Substances 0.000 claims description 11
- 238000000151 deposition Methods 0.000 claims description 7
- 239000004952 Polyamide Substances 0.000 claims description 5
- 229920002647 polyamide Polymers 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 238000010030 laminating Methods 0.000 claims description 3
- 230000035699 permeability Effects 0.000 claims description 2
- 230000008569 process Effects 0.000 description 24
- 229920002292 Nylon 6 Polymers 0.000 description 22
- 238000012360 testing method Methods 0.000 description 22
- 239000000463 material Substances 0.000 description 21
- 239000002904 solvent Substances 0.000 description 16
- 239000012530 fluid Substances 0.000 description 13
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 12
- 239000002245 particle Substances 0.000 description 9
- BDAGIHXWWSANSR-UHFFFAOYSA-N methanoic acid Natural products OC=O BDAGIHXWWSANSR-UHFFFAOYSA-N 0.000 description 8
- 238000003490 calendering Methods 0.000 description 7
- 238000001914 filtration Methods 0.000 description 7
- -1 polypropylene Polymers 0.000 description 7
- 239000004743 Polypropylene Substances 0.000 description 5
- 230000003287 optical effect Effects 0.000 description 5
- 229920001155 polypropylene Polymers 0.000 description 5
- 239000011148 porous material Substances 0.000 description 5
- OSWFIVFLDKOXQC-UHFFFAOYSA-N 4-(3-methoxyphenyl)aniline Chemical compound COC1=CC=CC(C=2C=CC(N)=CC=2)=C1 OSWFIVFLDKOXQC-UHFFFAOYSA-N 0.000 description 4
- 235000019253 formic acid Nutrition 0.000 description 4
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 230000005686 electrostatic field Effects 0.000 description 3
- 238000010041 electrostatic spinning Methods 0.000 description 3
- 235000013550 pizza Nutrition 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 2
- 229920001410 Microfiber Polymers 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 2
- 238000007664 blowing Methods 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 230000001788 irregular Effects 0.000 description 2
- RLSSMJSEOOYNOY-UHFFFAOYSA-N m-cresol Chemical compound CC1=CC=CC(O)=C1 RLSSMJSEOOYNOY-UHFFFAOYSA-N 0.000 description 2
- 239000003658 microfiber Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229920002492 poly(sulfone) Polymers 0.000 description 2
- 229920000573 polyethylene Polymers 0.000 description 2
- 229920005594 polymer fiber Polymers 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002040 relaxant effect Effects 0.000 description 2
- 238000001878 scanning electron micrograph Methods 0.000 description 2
- BYEAHWXPCBROCE-UHFFFAOYSA-N 1,1,1,3,3,3-hexafluoropropan-2-ol Chemical compound FC(F)(F)C(O)C(F)(F)F BYEAHWXPCBROCE-UHFFFAOYSA-N 0.000 description 1
- 241000239290 Araneae Species 0.000 description 1
- SECXISVLQFMRJM-UHFFFAOYSA-N N-Methylpyrrolidone Chemical compound CN1CCCC1=O SECXISVLQFMRJM-UHFFFAOYSA-N 0.000 description 1
- 239000002033 PVDF binder Substances 0.000 description 1
- 229930182556 Polyacetal Natural products 0.000 description 1
- 239000004793 Polystyrene Substances 0.000 description 1
- 239000004372 Polyvinyl alcohol Substances 0.000 description 1
- 229920001328 Polyvinylidene chloride Polymers 0.000 description 1
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 description 1
- RHQDFWAXVIIEBN-UHFFFAOYSA-N Trifluoroethanol Chemical compound OCC(F)(F)F RHQDFWAXVIIEBN-UHFFFAOYSA-N 0.000 description 1
- 238000013019 agitation Methods 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 239000002249 anxiolytic agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000007767 bonding agent Substances 0.000 description 1
- 238000009960 carding Methods 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 235000013351 cheese Nutrition 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 239000002657 fibrous material Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000009477 glass transition Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000005304 joining Methods 0.000 description 1
- 238000003475 lamination Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920003229 poly(methyl methacrylate) Polymers 0.000 description 1
- 229920002239 polyacrylonitrile Polymers 0.000 description 1
- 229920001281 polyalkylene Polymers 0.000 description 1
- 229920000412 polyarylene Polymers 0.000 description 1
- 229920006149 polyester-amide block copolymer Polymers 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 229920000098 polyolefin Polymers 0.000 description 1
- 229920006324 polyoxymethylene Polymers 0.000 description 1
- 229920002223 polystyrene Polymers 0.000 description 1
- 229920002451 polyvinyl alcohol Polymers 0.000 description 1
- 239000004800 polyvinyl chloride Substances 0.000 description 1
- 239000005033 polyvinylidene chloride Substances 0.000 description 1
- 229920002981 polyvinylidene fluoride Polymers 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000011877 solvent mixture Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B82—NANOTECHNOLOGY
- B82Y—SPECIFIC USES OR APPLICATIONS OF NANOSTRUCTURES; MEASUREMENT OR ANALYSIS OF NANOSTRUCTURES; MANUFACTURE OR TREATMENT OF NANOSTRUCTURES
- B82Y30/00—Nanotechnology for materials or surface science, e.g. nanocomposites
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/02—Loose filtering material, e.g. loose fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D39/00—Filtering material for liquid or gaseous fluids
- B01D39/14—Other self-supporting filtering material ; Other filtering material
- B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
- B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
- B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/04—Tubular membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/10—Supported membranes; Membrane supports
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D69/00—Semi-permeable membranes for separation processes or apparatus characterised by their form, structure or properties; Manufacturing processes specially adapted therefor
- B01D69/12—Composite membranes; Ultra-thin membranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/02—Types of fibres, filaments or particles, self-supporting or supported materials
- B01D2239/025—Types of fibres, filaments or particles, self-supporting or supported materials comprising nanofibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/0604—Arrangement of the fibres in the filtering material
- B01D2239/0631—Electro-spun
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/0604—Arrangement of the fibres in the filtering material
- B01D2239/064—The fibres being mixed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/065—More than one layer present in the filtering material
- B01D2239/0668—The layers being joined by heat or melt-bonding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/06—Filter cloth, e.g. knitted, woven non-woven; self-supported material
- B01D2239/069—Special geometry of layers
- B01D2239/0695—Wound layers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
- B01D2239/12—Special parameters characterising the filtering material
- B01D2239/1233—Fibre diameter
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nanotechnology (AREA)
- Crystallography & Structural Chemistry (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Materials Engineering (AREA)
- Composite Materials (AREA)
- Physics & Mathematics (AREA)
- Filtering Materials (AREA)
- Nonwoven Fabrics (AREA)
- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Artificial Filaments (AREA)
- Multicomponent Fibers (AREA)
- Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
Applications Claiming Priority (9)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US30848810P | 2010-02-26 | 2010-02-26 | |
| US61/308,488 | 2010-02-26 | ||
| US33046210P | 2010-05-03 | 2010-05-03 | |
| US61/330,462 | 2010-05-03 | ||
| US38348710P | 2010-09-16 | 2010-09-16 | |
| US38356910P | 2010-09-16 | 2010-09-16 | |
| US61/383,569 | 2010-09-16 | ||
| US61/383,487 | 2010-09-16 | ||
| PCT/US2011/026093 WO2011106537A2 (en) | 2010-02-26 | 2011-02-24 | Expanded composite filter media including nanofiber matrix and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| AU2011220737A1 AU2011220737A1 (en) | 2012-08-30 |
| AU2011220737B2 true AU2011220737B2 (en) | 2013-06-27 |
Family
ID=44504740
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2011220735A Ceased AU2011220735B2 (en) | 2010-02-26 | 2011-02-24 | Fine fiber liquid particulate filter media |
| AU2011220734A Ceased AU2011220734B2 (en) | 2010-02-26 | 2011-02-24 | Compressed nanofiber composite media |
| AU2011220737A Ceased AU2011220737B2 (en) | 2010-02-26 | 2011-02-24 | Expanded composite filter media including nanofiber matrix and method |
| AU2011220740A Ceased AU2011220740B2 (en) | 2010-02-26 | 2011-02-24 | Non-pleated tubular depth filter having fine fiber filtration media |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2011220735A Ceased AU2011220735B2 (en) | 2010-02-26 | 2011-02-24 | Fine fiber liquid particulate filter media |
| AU2011220734A Ceased AU2011220734B2 (en) | 2010-02-26 | 2011-02-24 | Compressed nanofiber composite media |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| AU2011220740A Ceased AU2011220740B2 (en) | 2010-02-26 | 2011-02-24 | Non-pleated tubular depth filter having fine fiber filtration media |
Country Status (14)
| Country | Link |
|---|---|
| US (4) | US20110210061A1 (enExample) |
| EP (4) | EP2539056A4 (enExample) |
| JP (3) | JP2013521107A (enExample) |
| KR (3) | KR20130009793A (enExample) |
| CN (4) | CN102946979A (enExample) |
| AU (4) | AU2011220735B2 (enExample) |
| BR (4) | BR112012021549A2 (enExample) |
| CA (4) | CA2790415A1 (enExample) |
| ES (1) | ES2731684T3 (enExample) |
| MX (4) | MX2012009880A (enExample) |
| MY (2) | MY164152A (enExample) |
| RU (1) | RU2563273C2 (enExample) |
| SG (3) | SG184784A1 (enExample) |
| WO (4) | WO2011106534A2 (enExample) |
Families Citing this family (78)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US8950587B2 (en) | 2009-04-03 | 2015-02-10 | Hollingsworth & Vose Company | Filter media suitable for hydraulic applications |
| JP5920603B2 (ja) * | 2011-09-05 | 2016-05-18 | 日産化学工業株式会社 | 精製された珪酸アルカリ水溶液及びシリカゾルの製造方法 |
| TWI576146B (zh) * | 2011-09-16 | 2017-04-01 | 日產化學工業股份有限公司 | 經精製的活性矽酸液及二氧化矽溶膠之製造方法 |
| JP2013083192A (ja) * | 2011-10-07 | 2013-05-09 | Denso Corp | 燃料フィルタ装置 |
| CZ2011762A3 (cs) * | 2011-11-23 | 2013-04-24 | Technická univerzita v Liberci | Prostredek pro zabránení pruniku ropy do vody a/nebo pro separaci ropy obsazené ve vode |
| US10058808B2 (en) | 2012-10-22 | 2018-08-28 | Cummins Filtration Ip, Inc. | Composite filter media utilizing bicomponent fibers |
| US9149748B2 (en) | 2012-11-13 | 2015-10-06 | Hollingsworth & Vose Company | Multi-layered filter media |
| US9149749B2 (en) | 2012-11-13 | 2015-10-06 | Hollingsworth & Vose Company | Pre-coalescing multi-layered filter media |
| US11090590B2 (en) | 2012-11-13 | 2021-08-17 | Hollingsworth & Vose Company | Pre-coalescing multi-layered filter media |
| WO2014116946A1 (en) * | 2013-01-25 | 2014-07-31 | Xanofi, Inc. | Wet laid non-woven substrate containing polymeric nanofibers |
| WO2014144536A1 (en) * | 2013-03-15 | 2014-09-18 | Shagufta Patel | Modified surface energy non-woven filter element |
| KR101601175B1 (ko) * | 2013-08-06 | 2016-03-08 | 주식회사 아모그린텍 | 주름 필터 및 그 제조 방법 |
| KR101625083B1 (ko) * | 2013-10-07 | 2016-06-07 | (주)에프티이앤이 | 나일론 나노섬유를 포함하는 필터 및 이의 제조방법 |
| EP3056597A4 (en) * | 2013-10-07 | 2016-10-26 | Finetex Ene Inc | FILTERS WITH NANO FIBERS BETWEEN SUBSTRATES AND METHOD FOR THE PRODUCTION THEREOF |
| KR101586730B1 (ko) * | 2013-10-07 | 2016-01-19 | (주)에프티이앤이 | 폴리비닐리덴 플루오라이드 나노섬유를 포함하는 필터 및 이의 제조방법 |
| WO2015053442A1 (ko) * | 2013-10-07 | 2015-04-16 | (주)에프티이앤이 | 나노섬유를 포함하는 필터 및 이의 제조방법 |
| US9573079B2 (en) | 2013-10-31 | 2017-02-21 | General Electric Company | Article and apparatus for enhancing the coalescence of a dispersed phase from a continuous phase in an emulsion |
| US9433878B2 (en) | 2013-10-31 | 2016-09-06 | General Electric Company | Electrostatic coalescer for coalescing a dispersed phase from a continuous phase in an emulsion |
| DK3065844T3 (da) * | 2013-11-06 | 2017-11-27 | Gen Electric | Smelteblæst dybdefilter, fremgangsmåde og maskine til at fremstille det |
| US11845019B2 (en) | 2013-11-06 | 2023-12-19 | Bl Technologies, Inc. | Large format melt-blown depth filter cartridge |
| CN103706149B (zh) * | 2014-01-13 | 2016-03-09 | 上海米素环保科技有限公司 | 模块化组合高效分离设备 |
| US10106452B2 (en) | 2014-02-14 | 2018-10-23 | Superior Fibers, Llc | System and method of continuous glass filament manufacture |
| US9446978B2 (en) | 2014-02-14 | 2016-09-20 | Charles Douglas Spitler | System and method for continuous strand fiberglass media processing |
| US10351462B1 (en) | 2014-02-14 | 2019-07-16 | Superior Fibers, Llc | Method of manufacturing fiberglass filtration media |
| EP3127594B1 (en) * | 2014-03-31 | 2018-11-28 | Unitika Ltd. | Air filter material |
| US10195542B2 (en) | 2014-05-15 | 2019-02-05 | Hollingsworth & Vose Company | Surface modified filter media |
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| CN104069665B (zh) * | 2014-07-23 | 2015-10-07 | 江苏永尚能源科技有限公司 | 具有自清洗装置的过滤器 |
| DE102015002672A1 (de) * | 2015-03-03 | 2016-09-08 | Mann + Hummel Gmbh | Filtermedium und Filterelement mit einem Filtermedium |
| WO2016160613A1 (en) | 2015-03-27 | 2016-10-06 | Spitler Charles Douglas | Skin stiffness characteristics and loft control production system and method with variable moisture content in input fiberglass |
| US10828587B2 (en) * | 2015-04-17 | 2020-11-10 | Hollingsworth & Vose Company | Stable filter media including nanofibers |
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| KR101579938B1 (ko) * | 2015-07-24 | 2015-12-28 | (주)에프티이앤이 | 폴리비닐리덴 플루오라이드 나노섬유를 포함하는 필터 |
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- 2011-02-24 CN CN2011800211168A patent/CN102946979A/zh active Pending
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- 2011-02-24 SG SG2012062188A patent/SG183446A1/en unknown
- 2011-02-24 CA CA2791312A patent/CA2791312A1/en not_active Abandoned
- 2011-02-24 BR BR112012021555A patent/BR112012021555A2/pt not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6649547B1 (en) * | 2000-08-31 | 2003-11-18 | Kimberly-Clark Worldwide, Inc. | Integrated nonwoven laminate material |
| US20080314011A1 (en) * | 2007-03-05 | 2008-12-25 | Alan Smithies | Filter element including a composite filter media |
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| FGA | Letters patent sealed or granted (standard patent) | ||
| MK14 | Patent ceased section 143(a) (annual fees not paid) or expired |