Air filter with fine fiber and spun bonded media

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7316723
APP PUB NO 20070283808A1
SERIAL NO

11398922

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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Disclosed are improved polymer materials. Also disclosed are fine fiber materials that can be made from the improved polymeric materials in the form of microfiber and nanofiber structures. The microfiber and nanofiber structures can be used in a variety of useful applications including the formation of filter materials.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
DONALDSON COMPANY, INC.MINNEAPOLIS, MN654

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chung, Hoo Y Bloomington, MN 21 672
Crofoot, Douglas G Burnsville, MN 22 859
Gogins, Mark A Roseville, MN 38 1710
Hall, John R B Burnsville, MN 14 494
Weik, Thomas M Deephaven, MN 37 1467

Cited Art Landscape

Patent Info (Count) # Cites Year
 
MINNESOTA MINING AND MANUFACTURING COMPANY (7)
4874399 Electret filter made of fibers containing polypropylene and poly(4-methyl-1-pentene) 122 1988
4917942 Nonwoven filter material 120 1988
5176952 Modulus nonwoven webs based on multi-layer blown microfibers 85 1991
5411576 Oily mist resistant electret filter media and method for filtering 129 1994
5496507 Method of charging electret filter media 193 1994
5472481 Oily mist resistant electret filter media 119 1995
5763078 Filter having corrugated nonwoven webs of polymeric microfiber 39 1996
 
Other [Check patent profile for assignment information] (2)
4842924 Novel compositions based on reinforcement with microfibrillar networks of rigid-rod polymers 35 1986
5453314 Single use disposable protective wearing apparel 30 1994
 
NASHUA CORPORATION (1)
6348432 Heat sensitive coating, recording material and methods of manufacture 16 2000
 
WIX FILTRATION CORP. (1)
5895510 Air filter assembly 45 1997
 
BBA NONWOVENS SIMPSONVILLE, INC. (1)
5593768 Nonwoven fabrics and fabric laminates from multiconstituent fibers 65 1994
 
VIRGINIA COMMONWEALTH UNIVERSITY (1)
2003/0088,266 Method of fusing electroprocessed matrices to a substrate 35 2002
 
ORACLE AMERICA, INC. (1)
6509765 Selectable resistor and/or driver for an integrated circuit with a linear resistance 20 2001
 
BBA GROUP PLC (1)
6604925 Device for forming a filtering material 35 1999
 
UNIVERSITY OF TENNESSEE RESEARCH FOUNDATION (1)
5273565 Meltblown fabric 49 1992
 
AKAMAI TECHNOLOGIES, INC. (1)
* 2009/0132,648 CONTENT DELIVERY AND GLOBAL TRAFFIC MANAGEMENT NETWORK SYSTEM 75 2009
 
CIBA-GEIGY CORPORATION (1)
4469606 Stabilization systems for fiber finishes 30 1982
 
AMERICAN FILTRONA CORPORATION (1)
4594162 Pleated filter and method and apparatus for fabricating same 59 1984
 
DONALDSON COMPANY, INC. (18)
4650506 Multi-layered microfiltration medium 149 1986
5104537 High pressure hydraulic spin-on filter 102 1990
5082476 Filtration arrangement and method 178 1990
5203201 On-line web filtration efficiency test method 34 1991
5364456 Filtration arrangement and method 83 1993
5672399 Filter material construction and method 182 1995
5820646 Inline filter apparatus 282 1996
5853442 Bolt connector assembly having retainer ring construction and reduced diameter shank portion 33 1997
6171684 Filter material construction and method 94 1997
5954849 Filter element 58 1997
D425189 Combined filter element and frame therefor 132 1998
6123751 Filter construction resistant to the passage of water soluble materials; and method 50 1998
6090173 Air filter assembly for filtering air with particulate matter 51 1998
6673136 Air filtration arrangements having fluted media constructions and methods 185 2001
6716274 Air filter assembly for filtering an air stream to remove particulate matter entrained in the stream 44 2001
* 6743273 Polymer, polymer microfiber, polymer nanofiber and applications including filter structures 135 2001
6800117 Filtration arrangement utilizing pleated construction and method 46 2001
* 6924028 Polymer, polymer microfiber, polymer nanofiber and applications including filter structures 58 2003
 
AMERICAN AIR FILTER COMPANY, INC. (1)
5672188 High capacity filter media 30 1996
 
HOLLINGSWORTH & VOSE COMPANY (1)
6554881 Filter media 97 2000
 
GORE HOLDINGS, INC. (1)
5026591 Coated products and methods for making 114 1989
 
BOARD OF REGENTS OF THE UNIVERSITY OF NEBRASKA (1)
6265333 Delamination resistant composites prepared by small diameter fiber reinforcement at ply interfaces 194 1998
 
Firma Carl Freudenberg (1)
6193773 Dust filter bag 27 1999
 
DYNIC CORPORATION (1)
5198294 Composite air-filtering material 20 1991
 
The Procter & Gamble Company (1)
4468428 Hydrophilic microfibrous absorbent webs 103 1982
 
DENDREON PHARMACEUTICALS, INC. (1)
5843442 Blood coagulation protein antagonists and uses therefor 45 1995
 
KURASHIKI BOSEKI KABUSHIKI KAISHA (1)
4826519 Multilayer filter element 27 1988
 
MEADWESTVACO CORPORATION (1)
4900671 Biocatalytic process for preparing phenolic resins using peroxidase or oxidase enzyme 115 1987
 
KX TECHNOLOGIES LLC (1)
6630016 Microporous filter media, filtration systems containing same, and methods of making and using 75 2002
 
UBE INDUSTRIES, LTD. (1)
4370290 Process for producing aromatic polyimide filaments 40 1981
 
Safety Components Fabric Technologies, Inc. (1)
6192520 Water resistant protective garment for fire fighters 37 1998
 
TOKUYAMA SODA KABUSHIKI KAISHA (1)
5238735 Microporous shaped article and process for preparation thereof 54 1990
 
SHAKESPEARE COMPANY, LLC (1)
4992515 Nylon terpolymer crosslinked with melamine formaldehyde for coating sewing threads 33 1990
 
ALS ENTERPRISES, INC. (1)
6134718 Odor absorbing clothing 61 1999
 
Stout Medical Group, Inc. (1)
2003/0195,611 Covering and method using electrospinning of very small fibers 73 2002
 
The University of Liverpool (2)
4689186 Production of electrostatically spun products 86 1985
4842505 Apparatus for producing fibrous structures electrostatically 68 1987
 
PALL CORPORATION (2)
4340479 Process for preparing hydrophilic polyamide membrane filter media and product 233 1980
4759782 Coalescing filter for removal of liquid aerosols from gaseous streams 100 1987
 
TEIJIN LIMITED (1)
5633746 Magneto-optical recording medium 24 1995
 
NEENAH GESSNER GMBH (2)
5437910 Multi-ply filter lasminate/composite for manufacturing vacuum cleaner filter bags 34 1993
6395046 Dust filter bag containing nano non-woven tissue 70 2000
 
ENTEGRIS, INC. (1)
6354443 Surface modified porous membrane and process 55 1997
 
AVENT, INC. (1)
6037281 Cloth-like, liquid-impervious, breathable composite barrier fabric 80 1996
 
RG Delaware, Inc. (1)
5980755 Methods and apparatus for monitoring a filter bed by differential pressure 23 1997
 
GENERAL ELECTRIC COMPANY (1)
5166246 Polyetherimide-polyamide compositions 27 1989
 
Nicast Corporation Ltd. (1)
2002/0084,178 Method and apparatus for manufacturing polymer fiber shells via electrospinning 44 2001
 
STERLING CHEMICALS INTERNATIONAL, INC. (1)
4929502 Fibrillated fibers and articles made therefrom 42 1986
 
HYDROMEDICA, LLC (1)
* 6855743 Reinforced, laminated, impregnated, and composite-like materials as crosslinked polyvinyl alcohol hydrogel structures 50 2001
 
3M INNOVATIVE PROPERTIES COMPANY (7)
5908598 Fibrous webs having enhanced electret properties 106 1995
5981038 Laminate preventing transmissions of viral pathogens 23 1995
6068799 Method of making electret articles and filters with increased oily mist resistance 41 1997
5919847 Composition useful for making electret fibers 59 1997
5968635 Fibrous webs useful for making electret filter media 61 1997
5976208 Electret filter media containing filtration enhancing additives 71 1997
6002017 Compounds useful as resin additives 51 1997
 
FREUDENBERG NONWOVENS LIMITED PARTNERSHIP (1)
4860382 Protective garment 48 1987
 
BLAUER MANUFACTURING COMPANY, INC. (1)
5466515 Weather protective fabric combination, outerwear constructed therefrom 17 1994
 
Nippondenso Co., Ltd. (1)
5993580 Process for manufacturing a filter element 34 1997
 
The Lubrizol Corporation (1)
* 2006/0231,487 Coated filter media 38 2005
 
TORAY INDUSTRIES, INC. (4)
4476186 Ultrafine fiber entangled sheet and method of producing the same 65 1983
* 4603083 Ultra-high-tenacity polyvinyl alcohol fiber and process for producing same 31 1984
* 4698194 Process for producing ultra-high-tenacity polyvinyl alcohol fiber 18 1986
5340522 Process for producing polyvinyl alcohol multifilament yarn 18 1993
 
BHA GROUP, INC. (1)
6110249 Filter element with membrane and bicomponent substrate 84 1999
 
OLIN MICROELECTRONIC CHEMICALS, INC. (1)
5863701 Polymers containing protected styrene and unprotected hydroxbenzyl (meth) acrylamides 31 1998
 
SHIN-ETSU CHEMICAL CO., LTD. (1)
6048661 Polymeric compounds, chemically amplified positive type resist materials and process for pattern formation 40 1998
 
JOHNS MANVILLE INTERNATIONAL, INC. (3)
5800586 Composite filter media 53 1996
5948344 Composite filter media 40 1998
5993501 Composite filter media 68 1998
 
Exxon Research and Engineering Company (1)
5269925 Filter comprising multiple layers of non-woven filter fabric of decreasing porosity 22 1992
 
EMD MILLIPORE CORPORATION (1)
5980759 Dual media filter cartridge construction 33 1995
 
BAXTER INTERNATIONAL INC. (1)
6032807 Methods for correlating average fiber diameter with performance in complex filtration media 31 1996
 
AAF-MCQUAY INC. (1)
2002/0192,468 Method, apparatus and product for manufacturing nanofiber media 23 2001
 
KIMBERLY-CLARK WORLDWIDE, INC. (4)
4824451 Melt-blown filter medium 67 1987
5597645 Nonwoven filter media for gas 79 1994
6015764 Microporous elastomeric film/nonwoven breathable laminate and method for making the same 139 1997
6322604 Filtration media and articles incorporating the same 39 2000
 
CUNO INCORPORATED (1)
4915886 Method of manufacturing nylon microporous hollow fiber membrane 30 1988
 
LIFESHIELD SCIENCES LLC (2)
2004/0158,312 Braided endoluminal device having tapered filaments 22 2003
2004/0158,312 Braided endoluminal device having tapered filaments 22 2003
 
H-TECH, INC. (1)
5358638 Multiple layer filter bag including abrasion-resistant material 55 1993
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
BHA GROUP (1)
* 2011/0016,838 HIGH PERFORMANCE GAS TURBINE INLET FILTER (HEPA) USING MEMBRANE MEDIA 5 2009
 
GENERAL ELECTRIC COMPANY (1)
9200568 Inlet air filtration system with self-cleaning filter bag 0 2014
 
AVALON NANOFIBER LIMITED (2)
* 8303693 Nanofiber filter facemasks and cabin filters 1 2007
* 2008/0264,259 NANOFIBER FILTER FACEMASKS AND CABIN FILTERS 18 2007
 
Board of Regents of the University to Texas System (1)
8721319 Superfine fiber creating spinneret and uses thereof 0 2009
 
BHA ALTAIR, LLC (3)
8206481 HEPA (H-10) performance synthetic nonwoven and nanofiber composite filter media 1 2009
8262780 High performance gas turbine inlet filter (HEPA) using membrane media 4 2009
9120046 Filter media and filter device comprised thereof 0 2012
 
INTUITIVE SURGICAL OPERATIONS, INC. (2)
7959703 Fluted filter with integrated frame 6 2008
* 2009/0320,423 Fluted Filter with Integrated Frame 10 2008
 
DONALDSON COMPANY, INC. (11)
8118901 Fine fiber media layer 7 2009
* 2010/0064,645 FINE FIBER MEDIA LAYER 8 2009
8029588 Fine fiber media layer 7 2010
* 2011/0067,369 FINE FIBER MEDIA LAYER 39 2010
8366797 Fine fiber media layer 6 2011
8512431 Fine fiber media layer 2 2012
8721756 Filter construction for use with air in-take for gas turbine and methods 2 2012
9587328 Fine fibers made from polymer crosslinked with resinous aldehyde composition 0 2012
9435056 Fibers made from soluble polymers 0 2012
8709118 Fine fiber media layer 1 2013
9474994 Filter media and elements 0 2014
 
BLACKBERRY LIMITED (1)
* 2007/0200,766 Adaptively tunable antennas and method of operation therefore 81 2007
 
BALDWIN FILTERS, INC. (16)
* 2006/0091,061 Filter assembly with sealing system 57 2004
* 2006/0091,064 Filter apparatus with separable seal support frame 67 2004
* 2007/0186,528 Fluted filter apparatus 43 2006
7753982 Filter with drained jacket, seal indicator/lock means, and seal baffle 17 2006
* 2008/0135,471 Method and apparatus for winding a filter element 10 2006
7909954 Method and apparatus for winding a filter media pack 3 2007
* 2008/0011,896 Method And Apparatus For Winding A Filter Media Pack 22 2007
9545593 Winding core pressure relief for fluted filter 0 2007
8277531 Filter element 3 2007
8048187 Filter frame attachment and fluted filter having same 3 2008
* 2010/0000,934 FILTER ASSEMBLY WITH SEALING SYSTEM 9 2009
7931725 Fluted filter apparatus 16 2009
8177877 Filter frame attachment and fluted filter having same 6 2011
8206625 Filter element 2 2011
8540790 Filter element 0 2012
8551375 Filter element 0 2013
 
CLARCOR INC. (7)
8777599 Multilayer apparatuses and methods for the production of microfibers and nanofibers 2 2012
8778240 Split fiber producing devices and methods for the production of microfibers and nanofibers 0 2012
8709309 Devices and methods for the production of coaxial microfibers and nanofibers 1 2012
8658067 Apparatuses and methods for the deposition of microfibers and nanofibers on a substrate 0 2012
8647540 Apparatuses having outlet elements and methods for the production of microfibers and nanofibers 0 2012
8647541 Apparatuses and methods for the simultaneous production of microfibers and nanofibers 0 2012
9394627 Apparatuses having outlet elements and methods for the production of microfibers and nanofibers 0 2015
 
HOLLINGSWORTH & VOSE COMPANY (11)
8608817 Meltblown filter medium 6 2008
* 2009/0120,048 Meltblown Filter Medium 13 2008
8986432 Meltblown filter medium, related applications and uses 0 2009
* 2010/0000,411 MELTBLOWN FILTER MEDIUM, RELATED APPLICATIONS AND USES 10 2009
8679218 Filter media with a multi-layer structure 3 2010
8950587 Filter media suitable for hydraulic applications 0 2010
* 2011/0079,553 FILTER MEDIA SUITABLE FOR HYDRAULIC APPLICATIONS 9 2010
* 2011/0147,976 MELTBLOWN FILTER MEDIUM 11 2010
9149748 Multi-layered filter media 0 2013
9283501 Filter media with a multi-layer structure 0 2014
9149749 Pre-coalescing multi-layered filter media 0 2014
 
BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM (7)
* 2009/0326,128 FIBERS AND METHODS RELATING THERETO 7 2008
8231378 Superfine fiber creating spinneret and uses thereof 0 2009
* 2009/0280,325 METHODS AND APPARATUSES FOR MAKING SUPERFINE FIBERS 19 2009
* 2009/0280,207 SUPERFINE FIBER CREATING SPINNERET AND USES THEREOF 12 2009
* 2009/0269,429 SUPERFINE FIBER CREATING SPINNERET AND USES THEREOF 17 2009
* 2009/0232,920 SUPERFINE FIBER CREATING SPINNERET AND USES THEREOF 19 2009
8828294 Superfine fiber creating spinneret and uses thereof 0 2012
* Cited By Examiner

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