Structured surface filtration media array

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6589317
APP PUB NO 20030089236A1
SERIAL NO

09927976

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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An electrostaticly charged filtration media is provided including a plurality of polymeric structured polymeric film layers having a structured surface defined on at least one face of each structured film layer forming at least in part flow channels. The plurality of structured film layers are configured as a stack with the structured surfaces defining a plurality of ordered inlets open through a face of the stack that are in fluid communication with ordered fluid pathways. Each fluid pathway is defined at least in part by at least one discrete flow channel such that fluid can flow substantially unimpeded from one of the inlets to an outlet opening at another face of the stack. A layer of fluid pathways is defined by two opposing charged film layers at least one of which is a structured film layer. The flow channels have an average height of from 0.1 mm to 5 mm and an average width of from 0.05 mm to 50 mm and an average aspect ratio of from 0.5 to 10.

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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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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Spiewak, Brian E Inver Grove Heights, MN 19 444
Tang, Yuan-Ming Vadnais Heights, MN 7 237
Wu, Tien T Woodbury, MN 14 117
Zhang, Zhiqun Roseville, MN 23 174

Cited Art Landscape

Patent Info (Count) # Cites Year
 
THE SCOTT FETZER COMPANY (1)
5405434 Electrostatic particle filtration 70 1993
 
Minnesota Mining and Manufacturing Company (13)
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
4894060 Disposable diaper with improved hook fastener portion 505 1988
4950549 Polypropylene articles and method for preparing same 59 1989
5175030 Microstructure-bearing composite plastic articles and method of making 307 1989
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
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] (1)
4313741 Electric dust collector 45 1980
 
3M INNOVATIVE PROPERTIES COMPANY (3)
5450235 Flexible cube-corner retroreflective sheeting 191 1993
5691846 Ultra-flexible retroreflective cube corner composite sheetings and methods of manufacture 230 1995
* 6280824 Contoured layer channel flow filtration media 53 1999
 
TORAY INDUSTRIES, INC. (1)
5057710 Electret materials and the method for preparing the electret materials 99 1990
 
VELCRO INDUSTRIES B.V. (1)
4775310 Apparatus for making a separable fastener 144 1986
 
JAPAN VILENE COMPANY, LTD. (1)
4592815 Method of manufacturing an electret filter 186 1985
* Cited By Examiner

Patent Citation Ranking

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Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (5)
* 2005/0022,430 Protective covering for athletic shoes 9 2004
* 7294175 Personal inhalation filter 2 2005
* 2005/0150,385 Personal inhalation filter 1 2005
* 2008/0063,558 Odour Reduction Apparatus 4 2005
9815068 Electret webs with charge-enhancing additives 0 2013
 
3M INNOVATIVE PROPERTIES COMPANY (10)
6986428 Fluid separation membrane module 36 2003
* 2004/0226,886 Fluid separation membrane module 9 2003
7279215 Membrane modules and integrated membrane cassettes 50 2003
* 2005/0123,727 Membrane modules and integrated membrane cassettes 7 2003
* 2007/0144,125 PERIMETER FILTER FRAME HAVING INTERNAL RETAINING FINS 0 2005
7338355 Abrasive article and methods of making and using the same 3 2006
* 2007/0287,366 ABRASIVE ARTICLE AND METHODS OF MAKING AND USING THE SAME 2 2006
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
 
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
 
HANON SYSTEMS (2)
7674306 Multilayered long life filter using convoluted foam 0 2007
* 2008/0184,684 MULTILAYERED LONG LIFE FILTER USING CONVOLUTED FOAM 0 2007
 
RONALD C. PARSONS AND DENISE M. PARSONS, TRUSTEES UNDER THE RONALD C. PARSONS AND DENISE M. PARSONS LIVING TRUST DATED OCTOBER 9, 2013 (1)
8899318 Applying an aggregate to expandable tubular 0 2014
* Cited By Examiner