Honeycomb body with internal cavities

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 7981498
APP PUB NO 20070292707A1
SERIAL NO

11841012

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A honeycomb body, especially a particulate filter, particularly for motor vehicle exhaust purification, includes inner walls defining passages with an entry and exit. Cavities free of walls in at least one subregion contain at least one spherical free space having a largest cross-sectional area at least 10 times a cross-sectional area of the passages in the subregion. The honeycomb body is wound, twisted or layered from at least one metal sheet having layers with a structuring forming the passages, at least in the subregion. The sheet-metal layers have holes with an area greater than 10 times the cross-sectional area of the passages in the subregion. The holes form cavities in at least 5 successive layers overlapping with an area at least 10 times the cross-sectional area of the passages in the subregion. The holes are double or more than triple the hydraulic diameter of the passages opening into the cavity.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
EMITEC GESELLSCHAFT FUER EMISSIONSTECHNOLOGIE MBHLOHMAR336

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Brück, Rolf Bergisch Gladbach, DE 125 266
Hirth, Peter Bonn, DE 52 176
Maus, Wolfgang Bergisch Gladbach, DE 122 1166

Cited Art Landscape

Patent Info (Count) # Cites Year
 
CAMET CO. (1)
* 5384099 Core element for catalytic converter 13 1993
 
BABCOCK-HITACHI K.K. (1)
* 4455281 Plate-shaped catalyst unit for NOx reduction of exhaust gas 21 1981
 
CALSONIC KANSEI CORPORATION (1)
7030059 Metal catalyst carrier 3 2003
 
NISSAN MOTOR CO., LTD. (1)
* 6761980 Metallic catalyst carrier 6 2002
 
Suddeutsche Kuhlerfabrik Julius Fr. Behr GmbH & Co. KG (1)
4273681 Support matrix for a catalytic reactor for scrubbing exhaust gases in an internal combustion engine 43 1980
 
SOTRALENTZ S.A. (1)
5384100 Baffle assembly for catalytic converter 10 1993
 
NIPPON STEEL CORPORATION (1)
* 5278125 Support structure for an exhaust gas purifying catalyst 19 1992
 
EMITEC GESELLSCHAFT FUER EMISSIONSTECHNOLOGIE MBH (8)
5139844 Honeycomb body, in particular catalyst carrier body, formed of a plurality of entwined bundles of sheet metal 35 1989
5045403 Honeycomb body with internal leading edges, in particular a catalyst body for motor vehicles 36 1990
5105539 Process for manufacturing a honeycomb body, in particular a catalyst carrier body, formed of a plurality of entwined bundles of sheet metal 39 1991
5130208 Honeycomb body with internal leading edges, in particular a catalyst body for motor vehicles 23 1991
5157010 Metallic honeycomb as catalyst carrier with microstructures for flow mixing 30 1991
5403559 Device for cleaning exhaust gases of motor vehicles 35 1993
6190784 Conical honeycomb body with longitudinal structures 24 1998
7083860 Metallic honeycomb body having at least partially perforated sheet-metal layers 8 2005
 
DEGUSSA METALS CATALYSTS CERDEC CORPORATION (1)
* 2002/0162,319 Method for increasing internal combustion engine exhaust gas catalyst durability 11 2001
 
ENGELHARD CORPORATION (1)
* 5820835 Assembly and method for making catalytic converter structure 14 1996
 
DENSO CORPORATION (1)
5567395 Catalyst carrier for a catalytic converter for purifying an exhaust gas in an internal combustion engine 11 1995
 
GENERAL MOTORS CORPORATION (1)
* 4390355 Wall-flow monolith filter 44 1982
 
KIMBERLY-CLARK WORLDWIDE, INC. (1)
* 5853402 Absorbent article having a composite absorbent core 45 1997
 
Interatom Internationale Atomreaktorbau GmbH (4)
4803189 Catalyst carrier of metallic honeycomb having a supporting wall and a method for producing the same 23 1987
4832998 Honeycomb body, especially a catalyst carrier body having sheet metal layers twisted in opposite directions and a method for producing the same 43 1987
4946822 Catalyst carrier body having a supporting wall and a method for producing the same 18 1988
4923109 Method for producing a honeycomb body, especially a catalyst carrier body having sheet metal layers twisted in opposite directions 60 1989
 
NGK INSULATORS, LTD. (2)
* 4283210 Ceramic honeycomb filter and a method of producing the same 26 1980
* 4568402 Method of sealing open ends of ceramic honeycomb structural body 27 1983
* Cited By Examiner

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