US Patent No: 7,981,498

Number of patents in Portfolio can not be more than 2000

Honeycomb body with internal cavities

ALSO PUBLISHED AS: 20070292707

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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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Patent Owner(s)

Patent OwnerAddressTotal Patents
EMITEC GESELLSCHAFT FUER EMISSIONSTECHNOLOGIE MBHLOHMAR378

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Brück, Rolf - 150 67
Hirth, Peter Rosrath, DE 68 108
Maus, Wolfgang Bergisch Gladbach, DE 147 1065

Cited Art Landscape

Patent Info (Count) # Cites Year
 
EMITEC GESELLSCHAFT FUER EMISSIONSTECHNOLOGIE MBH (8)
5,139,844 Honeycomb body, in particular catalyst carrier body, formed of a plurality of entwined bundles of sheet metal 34 1989
5,045,403 Honeycomb body with internal leading edges, in particular a catalyst body for motor vehicles 36 1990
5,105,539 Process for manufacturing a honeycomb body, in particular a catalyst carrier body, formed of a plurality of entwined bundles of sheet metal 39 1991
5,130,208 Honeycomb body with internal leading edges, in particular a catalyst body for motor vehicles 23 1991
5,157,010 Metallic honeycomb as catalyst carrier with microstructures for flow mixing 28 1991
5,403,559 Device for cleaning exhaust gases of motor vehicles 33 1993
6,190,784 Conical honeycomb body with longitudinal structures 24 1998
7,083,860 Metallic honeycomb body having at least partially perforated sheet-metal layers 6 2005
 
Interatom GmbH (4)
4,803,189 Catalyst carrier of metallic honeycomb having a supporting wall and a method for producing the same 23 1987
4,832,998 Honeycomb body, especially a catalyst carrier body having sheet metal layers twisted in opposite directions and a method for producing the same 43 1987
4,946,822 Catalyst carrier body having a supporting wall and a method for producing the same 18 1988
4,923,109 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)
4,283,210 Ceramic honeycomb filter and a method of producing the same 26 1980
4,568,402 Method of sealing open ends of ceramic honeycomb structural body 26 1983
 
BABCOCK-HITACHI KABUSHIKI KAISHA (1)
4,455,281 Plate-shaped catalyst unit for NOx reduction of exhaust gas 20 1981
 
CALSONIC KANSEI CORPORATION (1)
7,030,059 Metal catalyst carrier 2 2003
 
CAMET CO. (1)
5,384,099 Core element for catalytic converter 11 1993
 
DEGUSSA METALS CATALYSTS CERDEC CORPORATION (1)
2002/0162,319 Method for increasing internal combustion engine exhaust gas catalyst durability 10 2001
 
DENSO CORPORATION (1)
5,567,395 Catalyst carrier for a catalytic converter for purifying an exhaust gas in an internal combustion engine 10 1995
 
ENGELHARD CORPORATION (1)
5,820,835 Assembly and method for making catalytic converter structure 14 1996
 
GENERAL MOTORS CORPORATION (1)
4,390,355 Wall-flow monolith filter 43 1982
 
KIMBERLY-CLARK WORLDWIDE, INC. (1)
5,853,402 Absorbent article having a composite absorbent core 37 1997
 
NIPPON STEEL CORPORATION (1)
5,278,125 Support structure for an exhaust gas purifying catalyst 18 1992
 
NISSAN MOTOR CO., LTD. (1)
6,761,980 Metallic catalyst carrier 5 2002
 
Sotralentz S.A. (1)
5,384,100 Baffle assembly for catalytic converter 9 1993
 
Sueddeutsche Kuehlerfabrik Julius Fr. Behr GmbH & Co. KG (1)
4,273,681 Support matrix for a catalytic reactor for scrubbing exhaust gases in an internal combustion engine 43 1980

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Maintenance Fees

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