Electrofiltration process

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6471746
APP PUB NO 20020005116A1
SERIAL NO

09824199

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An electrofiltration process is provided having at least one electrostatically charged polymeric film layer having surface structures. The film layers may be configured as a collection cell that has the structured film layer defining a plurality of ordered inlet openings through a face of the collection cell and corresponding air pathways, thereby forming an open, porous volume. The air pathways are defined by a plurality of flow channels formed by the structured film layers. The electrofiltration process is coupled with an ionizer which actively induces charges onto the particles to be removed by the collection cell.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
3M INNOVATIVE PROPERTIES COMPANYST PAUL, MN8719
FUJITSU MICROELECTRONICS LIMITEDTOKYO24

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Hagglund, Joel K Oakdale, MN 14 100
Insley, Thomas I Lake Elmo, MN 61 1567
Johnson, Todd W Minneapolis, MN 83 1304

Cited Art Landscape

Patent Info (Count) # Cites Year
 
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Minnesota Mining and Manufacturing Company (16)
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4668558 Shaped plastic articles having replicated microstructure surfaces 180 1986
4950549 Polypropylene articles and method for preparing same 59 1989
5175030 Microstructure-bearing composite plastic articles and method of making 307 1989
5025052 Fluorochemical oxazolidinones 152 1990
5069403 Drag reduction article 72 1990
5078925 Preparing polypropylene articles 37 1990
5256231 Method for making a sheet of loop material 154 1990
5077870 Mushroom-type hook strip for a mechanical fastener 286 1990
5158557 Refastenable adhesive tape closure 53 1990
5133516 Drag reduction article 97 1991
5514120 Liquid management member for absorbent articles 88 1993
5496507 Method of charging electret filter media 203 1994
5472481 Oily mist resistant electret filter media 120 1995
5656368 Fibrous filtration face mask having corrugated polymeric microfiber filter layer 52 1995
5728446 Liquid management film for absorbent articles 55 1995
 
Other [Check patent profile for assignment information] (5)
4313741 Electric dust collector 45 1980
4978450 Filtering element 9 1988
5069404 Elliptical ram air pressurized airfoil parachute 10 1989
5099026 Fluorochemical oxazolidinones 80 1991
5176667 Liquid collection apparatus 58 1992
 
SIL-FAB Corporation (1)
4579555 Surgical gravity drain having aligned longitudinally extending capillary drainage channels 99 1983
 
XEROX CORPORATION (1)
4639748 Ink jet printhead with integral ink filter 78 1985
 
P B Diagnostic Systems, Inc. (1)
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FLSMIDTH A/S (1)
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CELLECTRICON AB (1)
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Compa Computer Corporation (1)
5440332 Apparatus for page wide ink jet printing 50 1992
 
VACUMET CORP. (1)
4913858 Method of embossing a coated sheet with a diffraction or holographic pattern 104 1988
 
PRODUCT DEVELOPMENT ASSISTANCE INC., A VA CORP. (1)
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CLEMSON UNIVERSITY (1)
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THE SCOTT FETZER COMPANY (1)
5405434 Electrostatic particle filtration 70 1993
 
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA (1)
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3M INNOVATIVE PROPERTIES COMPANY (2)
5450235 Flexible cube-corner retroreflective sheeting 191 1993
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ENGINEERING DYNAMICS LTD. (1)
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UNITED AIR SPECIALISTS, INC. (1)
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JAPAN VILENE COMPANY, LTD. (1)
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The Procter & Gamble Company (1)
5368910 Macroscopically expanded plastic web having improved fluid drainage 53 1993
 
AVERY DENNISON CORPORATION (1)
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PMT Inc. (1)
4533352 Microsurgical flexible suction mat 96 1983
 
OCCIDENTAL CHEMICAL CORPORATION (1)
4758481 Fuel cell with improved separation 36 1986
 
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5437651 Medical suction apparatus 771 1993
 
SENICHI MASUDA (2)
* 4509958 High-efficiency electrostatic filter device 63 1982
* 4715870 Electrostatic filter dust collector 59 1986
 
KUBOTA CORPORATION (1)
5651888 Filtration membrane cartridge 29 1996
 
The United States of America as represented by the Secretary of the Navy (1)
5158030 Damped flexible seal 11 1992
 
AGILENT TECHNOLOGIES, INC. (1)
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Messerschmidt-Bolkow-Blohm (2)
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IT'S ALL ABOUT CLEAN AIR, INC. (1)
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* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (2)
* 2006/0180,023 Electrically enhanced air filtration with improved efficacy 22 2006
* 9533312 Method for applying a moisture barrier to a precipitator for a two-step electrofilter 0 2012
 
Columbus Industries, Inc. (4)
* 7951229 Air filter formed from slit and expanded layers of electrostatically enhanced material 1 2007
* 2009/0064,862 AIR FILTER FORMED FROM SLIT AND EXPANDED LAYERS OF ELECTROSTATICALLY ENHANCED MATERIAL 2 2007
* 8105425 Air filter formed by slit and expanded layers of electrostatically enhanced material 1 2011
* 2011/0174,157 AIR FILTER FORMED BY SLIT AND EXPANDED LAYERS OF ELECTROSTATICALLY ENHANCED MATERIAL 0 2011
 
STRIONAIR, INC. (1)
7513933 Electrically enhanced air filtration with improved efficacy 7 2006
 
CARRIER CORPORATION (2)
8961659 Electrically enhanced air filtration system using rear fiber charging 1 2009
* 2011/0219,954 Electrically Enhanced Air Filtration System Using Rear Fiber Charging 2 2009
 
3M INNOVATIVE PROPERTIES COMPANY (2)
7141098 Air filtration system using point ionization sources 1 2004
9278301 Nestable framed pleated air filter and method of making 0 2013
 
BROOKSTONE PURCHASING, INC. (1)
* 7195660 Pillow with air filter 29 2004
 
S.C. JOHNSON & SON, INC. (2)
7368003 Systems for and methods of providing air purification in combination with odor elimination 24 2005
7537647 Air purifier 17 2006
 
HELEN OF TROY LIMITED (1)
* 2008/0264,437 Corn removal device 0 2007
 
HYUNDAI MOTOR COMPANY (2)
* 7435288 System for filtering particulate matter of diesel particulate filter 0 2006
* 2008/0072,756 System for filtering particulate matter of diesel particulate filter 2 2006
 
FKA DISTRIBUTING CO., LLC (2)
* 9005347 Air purifier 2 2012
* 2013/0061,754 AIR PURIFIER 0 2012
 
MANN+HUMMEL GMBH (1)
* 2009/0094,953 COMPACT FILTER ELEMENT AND METHOD FOR SEALING AN END THEREOF 0 2008
 
LG ELECTRONICS INC. (2)
* 7641707 Refrigerator having air-cleaner 12 2005
* 2012/0097,036 FILTER AND HOME APPLIANCE COMPRISING THE SAME 0 2011
* Cited By Examiner