Combination filter for filtering fluids

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6986804
APP PUB NO 20040112213A1
SERIAL NO

10472785

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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The present invention provides a combination filter for filtering fluids comprising a flow channel particulate filtration media having a first face and a second face and a gas adsorbing filtration media. The flow channel particulate filtration media comprises a plurality of flow channels directed in flow direction and defined by inner surfaces. The flow channels having inlet openings through the first face and outlet openings through the second face of the flow channel particulate filtration media. The inner surfaces of said flow channels at least in part are provided with structures protruding therefrom and forming or extending into the flow channels or an electrical charge or a combination of both. The said gas adsorbing filtration media comprises a pad having a first face and a second face and width and length dimensions orthogonal with respect to each other and each individually to the flow direction and having a thickness dimension in flow direction. The pad comprising a layer extending substantially perpendicular to the flow direction across the width and length dimensions of the pad.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
3M INNOVATIVE PROPERTIES COMPANYST PAUL, MN8719

International Classification(s)

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  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Bochynek, Nicolai Iserlohn, DE 1 20
Dominiak, Klaus Oer-Erkenschwick, DE 1 20
Koehler, Frank Essen, DE 3 22
Lotgerink-Bruinenberg, Marcus Hagen, DE 3 51

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Minnesota Mining and Manufacturing Company (12)
RE31285 Method for manufacturing a filter of electrically charged electret fiber material and electret filters obtained according to said method 108 1981
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
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
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
 
Other [Check patent profile for assignment information] (3)
5069404 Elliptical ram air pressurized airfoil parachute 10 1989
5099026 Fluorochemical oxazolidinones 80 1991
* 5354365 Air filter assembly 22 1993
 
THE SCOTT FETZER COMPANY (1)
5405434 Electrostatic particle filtration 70 1993
 
3M INNOVATIVE PROPERTIES COMPANY (3)
5691846 Ultra-flexible retroreflective cube corner composite sheetings and methods of manufacture 230 1995
* 6280824 Contoured layer channel flow filtration media 53 1999
* 6454839 Electrofiltration apparatus 21 1999
 
TORAY INDUSTRIES, INC. (1)
5057710 Electret materials and the method for preparing the electret materials 99 1990
 
PALL CORPORATION (2)
* 5129929 Sorbent filtration device 32 1990
* 5302354 Filtration device 51 1992
 
JAPAN VILENE COMPANY, LTD. (1)
4592815 Method of manufacturing an electret filter 186 1985
 
ENGELHARD CORPORATION (1)
* 4725411 Device for physical and/or chemical treatment of fluids 29 1985
 
D-Mark, Inc. (1)
* 5338340 Filter and method of making same 51 1993
 
Valeo (1)
* 6228152 Filtering device for equipping a ventilation and/or heating and/or air conditioning unit, more particularly for a motor vehicle 16 1999
 
ENERVIRONS CORPORATION (1)
* 5288298 Antimicrobial air filter and method of making same 69 1992
 
The United States of America as represented by the Secretary of the Navy (1)
5158030 Damped flexible seal 11 1992
 
TOYOTA JIDOSHA KABUSHIKI KAISHA (1)
* 6592655 Air cleaner 36 2002
 
VELCRO INDUSTRIES B.V. (1)
4775310 Apparatus for making a separable fastener 144 1986
 
FIRMA FILTERWERK MANN & HUMMEL GMBH (1)
* 4418662 Engine air intake filter with fumes-absorbing substance 61 1981
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
INTERNATIONAL BUSINESS MACHINES CORPORATION (1)
* 2007/0233,668 Method, system, and computer program product for semantic annotation of data in a software system 6 2006
 
Other [Check patent profile for assignment information] (1)
* 7357442 Post pressurizing material treatment for bodies moving through fluid 2 2006
 
NEC DISPLAY SOLUTIONS, LTD. (2)
* 8932380 Dust removal device 0 2010
* 2013/0180,222 DUST REMOVAL DEVICE 0 2010
 
Columbus Industries, Inc. (1)
* 2010/0247,404 MULTI LAYER PLEATABLE FILTER MEDIUM 5 2010
 
3M INNOVATIVE PROPERTIES COMPANY (3)
8617295 Active-particulate air filter having monolith primary filter and polishing filter 0 2009
* 2011/0072,971 ACTIVE-PARTICULATE AIR FILTER HAVING MONOLITH PRIMARY FILTER AND POLISHING FILTER 0 2009
8535406 Filter element utilizing shaped particle-containing nonwoven web 0 2009
 
BLACKBERRY LIMITED (1)
* 2007/0200,766 Adaptively tunable antennas and method of operation therefore 92 2007
 
HOLLINGSWORTH & VOSE COMPANY (20)
7883562 Waved filter media and elements 8 2008
* 2008/0202,078 WAVED FILTER MEDIA AND ELEMENTS 22 2008
* 8608817 Meltblown filter medium 7 2008
* 2009/0120,048 Meltblown Filter Medium 16 2008
8202340 Waved filter media and elements 8 2009
8986432 Meltblown filter medium, related applications and uses 2 2009
* 2010/0000,411 MELTBLOWN FILTER MEDIUM, RELATED APPLICATIONS AND USES 11 2009
8257459 Waved filter media and elements 6 2009
* 2010/0107,881 WAVED FILTER MEDIA AND ELEMENTS 14 2009
8679218 Filter media with a multi-layer structure 5 2010
8950587 Filter media suitable for hydraulic applications 0 2010
* 2011/0079,553 FILTER MEDIA SUITABLE FOR HYDRAULIC APPLICATIONS 11 2010
* 2011/0147,976 MELTBLOWN FILTER MEDIUM 12 2010
* 8197569 Waved filter media and elements 9 2010
* 2011/0162,337 WAVED FILTER MEDIA AND ELEMENTS 6 2010
8882875 Waved filter media and elements 1 2012
9694306 Filter media including polymer compositions and blends 0 2013
9718020 Waved filter media and elements 0 2013
9283501 Filter media with a multi-layer structure 1 2014
9687771 Waved filter media and elements 0 2014
 
ADC TECH INTERNATIONAL LTD. (1)
* 2014/0150,797 AIR PURIFIER HAVING AN ELECTRET MODULE 0 2012
 
PUROLATOR FILTERS NA LLC (1)
* 2006/0026,937 Filter assembly including foam and pleated media 1 2004
 
LG ELECTRONICS INC. (1)
* 2012/0097,036 FILTER AND HOME APPLIANCE COMPRISING THE SAME 0 2011
* Cited By Examiner

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11.5 Year Payment $7400.00 $3700.00 $1850.00 Jul 17, 2017
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