US Patent No: 7,316,723

Number of patents in Portfolio can not be more than 2000

Air filter with fine fiber and spun bonded media

ALSO PUBLISHED AS: 20070283808
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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, MN783

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chung, Hoo Y Bloomington, MN 39 398
Crofoot, Douglas G Burnsville, MN 42 519
Gogins, Mark A Roseville, MN 68 1143
Hall, John R B Burnsville, MN 16 341
Weik, Thomas M Deephaven, MN 61 1030

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Donaldson Company, Inc. (18)
4,650,506 Multi-layered microfiltration medium 134 1986
5,104,537 High pressure hydraulic spin-on filter 95 1990
5,082,476 Filtration arrangement and method 152 1990
5,203,201 On-line web filtration efficiency test method 31 1991
5,364,456 Filtration arrangement and method 79 1993
5,672,399 Filter material construction and method 146 1995
5,820,646 Inline filter apparatus 232 1996
5,853,442 Bolt connector assembly having retainer ring construction and reduced diameter shank portion 32 1997
6,171,684 Filter material construction and method 71 1997
5,954,849 Filter element 53 1997
D425189 Combined filter element and frame therefor 103 1998
6,123,751 Filter construction resistant to the passage of water soluble materials; and method 47 1998
6,090,173 Air filter assembly for filtering air with particulate matter 41 1998
6,673,136 Air filtration arrangements having fluted media constructions and methods 152 2001
6,716,274 Air filter assembly for filtering an air stream to remove particulate matter entrained in the stream 36 2001
6,743,273 Polymer, polymer microfiber, polymer nanofiber and applications including filter structures 100 2001
6,800,117 Filtration arrangement utilizing pleated construction and method 35 2001
6,924,028 Polymer, polymer microfiber, polymer nanofiber and applications including filter structures 42 2003
 
Minnesota Mining and Manufacturing Company (8)
4,215,682 Melt-blown fibrous electrets 310 1978
4,874,399 Electret filter made of fibers containing polypropylene and poly(4-methyl-1-pentene) 117 1988
4,917,942 Nonwoven filter material 116 1988
5,176,952 Modulus nonwoven webs based on multi-layer blown microfibers 71 1991
5,411,576 Oily mist resistant electret filter media and method for filtering 125 1994
5,496,507 Method of charging electret filter media 174 1994
5,472,481 Oily mist resistant electret filter media 116 1995
5,763,078 Filter having corrugated nonwoven webs of polymeric microfiber 36 1996
 
3M INNOVATIVE PROPERTIES COMPANY (7)
5,908,598 Fibrous webs having enhanced electret properties 94 1995
5,981,038 Laminate preventing transmissions of viral pathogens 21 1995
6,068,799 Method of making electret articles and filters with increased oily mist resistance 39 1997
5,919,847 Composition useful for making electret fibers 57 1997
5,968,635 Fibrous webs useful for making electret filter media 58 1997
5,976,208 Electret filter media containing filtration enhancing additives 66 1997
6,002,017 Compounds useful as resin additives 51 1997
 
KIMBERLY-CLARK WORLDWIDE, INC. (5)
4,824,451 Melt-blown filter medium 61 1987
5,597,645 Nonwoven filter media for gas 75 1994
6,037,281 Cloth-like, liquid-impervious, breathable composite barrier fabric 73 1996
6,015,764 Microporous elastomeric film/nonwoven breathable laminate and method for making the same 109 1997
6,322,604 Filtration media and articles incorporating the same 38 2000
 
TORAY INDUSTRIES, INC. (4)
4,476,186 Ultrafine fiber entangled sheet and method of producing the same 64 1983
4,603,083 Ultra-high-tenacity polyvinyl alcohol fiber and process for producing same 29 1984
4,698,194 Process for producing ultra-high-tenacity polyvinyl alcohol fiber 16 1986
5,340,522 Process for producing polyvinyl alcohol multifilament yarn 17 1993
 
JOHNS MANVILLE INTERNATIONAL, INC. (3)
5,800,586 Composite filter media 50 1996
5,948,344 Composite filter media 38 1998
5,993,501 Composite filter media 56 1998
 
THE UNIVERSITY OF LIVERPOOL (3)
4,323,525 Electrostatic spinning of tubular products 131 1979
4,689,186 Production of electrostatically spun products 76 1985
4,842,505 Apparatus for producing fibrous structures electrostatically 58 1987
 
LIFESHIELD SCIENCES LLC (2)
2004/0158,312 Braided endoluminal device having tapered filaments 4 2003
2004/0158,312 Braided endoluminal device having tapered filaments 4 2003
 
NEENAH GESSNER GMBH (2)
5,437,910 Multi-ply filter lasminate/composite for manufacturing vacuum cleaner filter bags 33 1993
6,395,046 Dust filter bag containing nano non-woven tissue 64 2000
 
PALL CORPORATION (2)
4,340,479 Process for preparing hydrophilic polyamide membrane filter media and product 216 1980
4,759,782 Coalescing filter for removal of liquid aerosols from gaseous streams 95 1987
 
AAF-MCQUAY INC. (1)
2002/0192,468 Method, apparatus and product for manufacturing nanofiber media 21 2001
 
AKAMAI TECHNOLOGIES, INC. (1)
2009/0132,648 CONTENT DELIVERY AND GLOBAL TRAFFIC MANAGEMENT NETWORK SYSTEM 24 2009
 
ALS Enterprises, Inc. (1)
6,134,718 Odor absorbing clothing 54 1999
 
AMERICAN AIR FILTER COMPANY, INC. (1)
5,672,188 High capacity filter media 26 1996
 
AMERICAN FILTRONA CORPORATION (1)
4,594,162 Pleated filter and method and apparatus for fabricating same 57 1984
 
BASF AKTIENGESELLSCHAFT (1)
4,210,615 Manufacture of thermoplastics fibrids 29 1975
 
BATTELLE MEMORIAL INSTITUTE (1)
4,230,650 Process for the manufacture of a plurality of filaments 61 1977
 
BAXTER INTERNATIONAL INC. (1)
6,032,807 Methods for correlating average fiber diameter with performance in complex filtration media 29 1996
 
BBA GROUP PLC (1)
6,604,925 Device for forming a filtering material 30 1999
 
BBA NONWOVENS SIMPSONVILLE, INC. (1)
5,593,768 Nonwoven fabrics and fabric laminates from multiconstituent fibers 60 1994
 
BHA GROUP, INC. (1)
6,110,249 Filter element with membrane and bicomponent substrate 68 1999
 
BLAUER MANUFACTURING COMPANY, INC. (1)
5,466,515 Weather protective fabric combination, outerwear constructed therefrom 17 1994
 
BOARD OF REGENTS OF THE UNIVERSITY OF NEBRASKA (1)
6,265,333 Delamination resistant composites prepared by small diameter fiber reinforcement at ply interfaces 148 1998
 
CELGARD LLC (1)
4,290,987 Process for preparing microporous hollow fibers 49 1979
 
CIBA-GEIGY CORPORATION (1)
4,469,606 Stabilization systems for fiber finishes 29 1982
 
CUNO INCORPORATED (1)
4,915,886 Method of manufacturing nylon microporous hollow fiber membrane 29 1988
 
DENDREON CORPORATION (1)
5,843,442 Blood coagulation protein antagonists and uses therefor 45 1995
 
DYNIC CORPORATION (1)
5,198,294 Composite air-filtering material 20 1991
 
EMD MILLIPORE CORPORATION (1)
5,980,759 Dual media filter cartridge construction 32 1995
 
ENTEGRIS, INC. (1)
6,354,443 Surface modified porous membrane and process 27 1997
 
Exxon Research and Engineering Company (1)
5,269,925 Filter comprising multiple layers of non-woven filter fabric of decreasing porosity 22 1992
 
Firma Carl Freudenberg (1)
6,193,773 Dust filter bag 24 1999
 
FREUDENBERG NONWOVENS LIMITED PARTNERSHIP (1)
4,860,382 Protective garment 42 1987
 
GENERAL ELECTRIC COMPANY (1)
5,166,246 Polyetherimide-polyamide compositions 25 1989
 
GORE HOLDINGS, INC. (1)
5,026,591 Coated products and methods for making 107 1989
 
H-TECH, INC. (1)
5,358,638 Multiple layer filter bag including abrasion-resistant material 49 1993
 
HOLLINGSWORTH & VOSE COMPANY (1)
6,554,881 Filter media 75 2000
 
HYDROMEDICA, LLC (1)
6,855,743 Reinforced, laminated, impregnated, and composite-like materials as crosslinked polyvinyl alcohol hydrogel structures 39 2001
 
INMONT CORPORATION, (CHANGED TO) (1)
4,223,101 Method of producing fibrous structure 58 1978
 
KURASHIKI BOSEKI KABUSHIKI KAISHA (1)
4,826,519 Multilayer filter element 27 1988
 
KX TECHNOLOGIES LLC (1)
6,630,016 Microporous filter media, filtration systems containing same, and methods of making and using 67 2002
 
MEADWESTVACO CORPORATION (1)
4,900,671 Biocatalytic process for preparing phenolic resins using peroxidase or oxidase enzyme 98 1987
 
Nashua Corporation (1)
6,348,432 Heat sensitive coating, recording material and methods of manufacture 15 2000
 
Nicast Corporation Ltd. (1)
2002/0084,178 Method and apparatus for manufacturing polymer fiber shells via electrospinning 39 2001
 
Nippondenso Co., Ltd. (1)
5,993,580 Process for manufacturing a filter element 33 1997
 
OLIN MICROELECTRONIC CHEMICALS, INC. (1)
5,863,701 Polymers containing protected styrene and unprotected hydroxbenzyl (meth) acrylamides 31 1998
 
RG DELAWARE, INC. (1)
5,980,755 Methods and apparatus for monitoring a filter bed by differential pressure 23 1997
 
Safety Components Fabric Technologies, Inc. (1)
6,192,520 Water resistant protective garment for fire fighters 30 1998
 
SHAKESPEARE COMPANY, LLC (1)
4,992,515 Nylon terpolymer crosslinked with melamine formaldehyde for coating sewing threads 30 1990
 
SHIN-ETSU CHEMICAL CO., LTD. (1)
6,048,661 Polymeric compounds, chemically amplified positive type resist materials and process for pattern formation 40 1998
 
STERLING CHEMICALS INTERNATIONAL, INC. (1)
4,929,502 Fibrillated fibers and articles made therefrom 41 1986
 
STOUT MEDICAL GROUP, INC. (1)
2003/0195,611 Covering and method using electrospinning of very small fibers 50 2002
 
SUN MICROSYSTEMS, INC. (1)
6,509,765 Selectable resistor and/or driver for an integrated circuit with a linear resistance 20 2001
 
TEIJIN LIMITED (1)
5,633,746 Magneto-optical recording medium 24 1995
 
The Lubrizol Corporation (1)
2006/0231,487 Coated filter media 13 2005
 
The Procter & Gamble Company (1)
4,468,428 Hydrophilic microfibrous absorbent webs 92 1982
 
Tokuyama Soda Kabushiki Kaisha (1)
5,238,735 Microporous shaped article and process for preparation thereof 52 1990
 
UBE INDUSTRIES, LTD. (1)
4,370,290 Process for producing aromatic polyimide filaments 39 1981
 
Union Carbide Corporation (1)
4,278,623 Ultra-fine fibers and method for making same 39 1977
 
UNIVERSITY OF TENNESSEE RESEARCH FOUNDATION (1)
5,273,565 Meltblown fabric 48 1992
 
VIRGINIA COMMONWEALTH UNIVERSITY (1)
2003/0088,266 Method of fusing electroprocessed matrices to a substrate 30 2002
 
WIX FILTRATION CORP. (1)
5,895,510 Air filter assembly 40 1997
 
Other [Check patent profile for assignment information] (2)
4,842,924 Novel compositions based on reinforcement with microfibrillar networks of rigid-rod polymers 34 1986
5,453,314 Single use disposable protective wearing apparel 29 1994

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
BALDWIN FILTERS, INC. (9)
7,753,982 Filter with drained jacket, seal indicator/lock means, and seal baffle 12 2006
7,909,954 Method and apparatus for winding a filter media pack 2 2007
8,277,531 Filter element 3 2007
8,048,187 Filter frame attachment and fluted filter having same 1 2008
7,931,725 Fluted filter apparatus 8 2009
8,177,877 Filter frame attachment and fluted filter having same 5 2011
8,206,625 Filter element 2 2011
8,540,790 Filter element 0 2012
8,551,375 Filter element 0 2013
 
Donaldson Company, Inc. (6)
8,118,901 Fine fiber media layer 3 2009
8,029,588 Fine fiber media layer 2 2010
8,366,797 Fine fiber media layer 1 2011
8,512,431 Fine fiber media layer 0 2012
8,721,756 Filter construction for use with air in-take for gas turbine and methods 0 2012
8,709,118 Fine fiber media layer 0 2013
 
FIBERIO TECHNOLOGY CORPORATION (6)
8,777,599 Multilayer apparatuses and methods for the production of microfibers and nanofibers 0 2012
8,778,240 Split fiber producing devices and methods for the production of microfibers and nanofibers 0 2012
8,709,309 Devices and methods for the production of coaxial microfibers and nanofibers 0 2012
8,658,067 Apparatuses and methods for the deposition of microfibers and nanofibers on a substrate 0 2012
8,647,540 Apparatuses having outlet elements and methods for the production of microfibers and nanofibers 0 2012
8,647,541 Apparatuses and methods for the simultaneous production of microfibers and nanofibers 0 2012
 
BHA ALTAIR, LLC (2)
8,206,481 HEPA (H-10) performance synthetic nonwoven and nanofiber composite filter media 1 2009
8,262,780 High performance gas turbine inlet filter (HEPA) using membrane media 0 2009
 
HOLLINGSWORTH & VOSE COMPANY (2)
8,608,817 Meltblown filter medium 1 2008
8,679,218 Filter media with a multi-layer structure 0 2010
 
Board of Regents of the University to Texas System (1)
8,721,319 Superfine fiber creating spinneret and uses thereof 0 2009
 
BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM (1)
8,231,378 Superfine fiber creating spinneret and uses thereof 0 2009
 
INTUITIVE SURGICAL OPERATIONS, INC. (1)
7,959,703 Fluted filter with integrated frame 3 2008
 
The Hong Kong Polytechnic University (1)
8,303,693 Nanofiber filter facemasks and cabin filters 0 2007

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