US Patent No: 5,100,632

Number of patents in Portfolio can not be more than 2000

Catalyzed diesel exhaust particulate filter

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Abstract

A self-cleaning diesel exhaust particulate filter is disclosed wherein burn-off of collected particulate matter is accomplished at certain exhaust gas temperatures, the filter being provided with a catalyst mixture consisting essentially of a platinum group metal and an alkaline earth metal oxide. The platinum group metal may be one or both of platinum and rhodium and the alkaline earth metal oxide may be magnesium oxide. The presence of the catalyst mixture serves to lower the temperature at which ignition of the collected particulates is initiated.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
ENGELHARD CORPORATIONISELIN, NJ788

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dettling, Joseph C Howell, NJ 63 1404
Skomoroski, Robert Paterson, NJ 1 75

Cited Art

Patent Info (Count) # Cites Year
 
ENGELHARD CORPORATION (1)
4,965,243 Process for producing a catalyst for purifying exhaust gases from internal combustion engines 41 1990
 
TDK ELECTRONICS CO., LTD. (1)
4,183,829 Catalysts for purification of exhaust gases from internal combustion engines 10 1978
 
W.R. GRACE & CO.-CONN. (1)
4,426,320 Catalyst composition for exhaust gas treatment 19 1982

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
TOYOTA JIDOSHA KABUSHIKI KAISHA (15)
6,594,991 Exhaust purifying method and apparatus of an internal combustion engine 5 2001
6,568,178 Device for purifying the exhaust gas of an internal combustion engine 14 2001
6,546,721 Exhaust gas purification device 24 2001
6,490,857 Device for purifying the exhaust gas of an internal combustion engine 22 2001
6,786,041 Exhaust gas purification method and exhaust gas purification apparatus 8 2001
6,769,245 Exhaust gas purification method 4 2001
6,644,022 Exhaust gas purification device of internal combustion engine 10 2001
6,588,204 Device for purifying the exhaust gas of an internal combustion engine 11 2001
6,874,315 Exhaust gas purification device 6 2001
6,955,041 Exhaust gas purifying apparatus for internal combustion engine 4 2002
6,672,050 Exhaust gas purification device of an engine 14 2002
6,820,418 Exhaust gas purification apparatus 19 2002
6,681,566 Exhaust purifying method and apparatus of an internal combustion engine 2 2003
7,296,401 Device for purifying the exhaust gas of an internal combustion engine 3 2004
8,252,374 Particulate matter purifying device and manufacturing method thereof 0 2006
 
ENGELHARD CORPORATION (9)
5,551,971 Particulate filter, and system and method for cleaning same 30 1994
6,301,887 Low pressure EGR system for diesel engines 93 2000
6,586,254 Method and apparatus for accelerated catalyst poisoning and deactivation 13 2000
6,727,097 Method and apparatus for accelerated catalyst poisoning and deactivation 8 2001
6,826,906 Exhaust system for enhanced reduction of nitrogen oxides and particulates from diesel engines 30 2001
7,055,311 Emission control system for vehicles powered by diesel engines 22 2002
7,078,004 Diesel oxidation catalyst 19 2003
7,143,578 Exhaust system for enhanced reduction of nitrogen oxides and particulates from diesel engines 16 2004
8,119,075 Diesel particulate filters having ultra-thin catalyzed oxidation coatings 0 2005
 
FORD GLOBAL TECHNOLOGIES, LLC (7)
6,813,884 Method of treating diesel exhaust gases 12 2002
6,928,806 Exhaust gas aftertreatment systems 44 2002
7,771,669 Soot oxidation catalyst and method of making 3 2006
7,797,931 Catalyst composition for diesel particulate filter 1 2007
8,137,636 Soot oxidation catalyst and method of making 0 2010
8,052,937 Soot oxidation catalyst and method of making 0 2010
8,241,579 Diesel exhaust gas treatment system 0 2011
 
BASF CATALYSTS LLC (4)
7,506,504 DOC and particulate control system for diesel engines 6 2005
7,527,774 Inlet metallic foam support coupled to precious metal catalyst for application on 4 stroke platforms 1 2005
7,521,033 Exhaust inlet metallic foam trap coupled to a downstream monolithic precious metal catalyst 0 2005
7,576,031 Pt-Pd diesel oxidation catalyst with CO/HC light-off and HC storage function 13 2006
 
BASF CORPORATION (4)
7,229,597 Catalyzed SCR filter and emission treatment system 30 2003
7,902,107 Catalyzed SCR filter and emission treatment system 3 2008
8,122,603 Method of forming a catalyzed selective catalytic reduction (SCR) filter 0 2009
7,875,573 Pt-Pd diesel oxidation catalyst with CO/HC light-off and HC storage function 4 2009
 
GEO2 TECHNOLOGIES, INC. (4)
7,550,117 Nonwoven composites and related products and processes 14 2004
7,578,979 Ceramic diesel exhaust filters 0 2004
7,582,270 Multi-functional substantially fibrous mullite filtration substrates and devices 0 2005
7,572,416 Nonwoven composites and related products and methods 16 2007
 
CATALYTIC SOLUTIONS, INC. (3)
7,943,097 emissions from boilers 2 2008
7,785,551 Ammonia SCR catalyst and method of using the catalyst 2 2008
7,767,175 Ammonia SCR catalyst and method of using the catalyst 0 2009
 
JOHNSON MATTHEY PUBLIC LIMITED COMPANY (3)
6,479,023 System for converting particulate matter in gasoline engine exhaust gases 9 2000
8,127,537 Exhaust system for a spark-ignited internal combustion engine 0 2007
8,205,437 On board diagnostic system 0 2008
 
CATERPILLAR INC. (2)
8,071,504 Exhaust system having a gold-platinum group metal catalyst 0 2008
8,236,261 Exhaust system having a gold-platinum group metal catalyst 0 2011
 
DONALDSON COMPANY, INC. (2)
7,337,607 Method of dispensing fuel into transient flow of an exhaust system 11 2004
7,862,640 Low temperature diesel particulate matter reduction system 1 2007
 
UMICORE AG & CO. KG (2)
7,351,382 Particle filter having a catalytically active coating to accelerate burning off accumulated soot particles during a regeneration phase 5 2003
7,465,690 Methods for making a catalytic element, the catalytic element made therefrom, and catalyzed particulate filters 5 2003
 
UMICORE SHOKUBAI USA INC. (2)
7,704,473 Method and device for controlling exhaust emission from internal combustion engine 2 2005
8,418,444 Method for purification of exhaust gas from internal combustion engine 0 2007
 
AFTON CHEMICAL INTANGIBLES LLC (1)
8,006,652 Emissions control system for diesel fuel combustion after treatment system 0 2005
 
BENDIX COMMERCIAL VEHICLE SYSTEMS LLC (1)
6,883,321 Filter assembly for exhaust gases 22 2003
 
CORNING INCORPORATED (1)
5,376,341 Catalytic converter for motorcycles 49 1992
 
COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH (1)
5,756,421 Composite catalysts containing transitional and alkaline earth metal oxides useful for oxidative conversion of methane (or natural gas) to carbon monoxide and hydrogen (or synthesis gas) 14 1995
 
CREAVIS GESELLSCHAFT FUER TECHNOLOGIE UND INNOVATION MBH (1)
6,299,668 Method for separating mixtures of substances using a material pervious to said substances 25 1999
 
CUMMINS FILTRATION IP, INC. (1)
7,967,887 Exhaust aftertreatment filter with reduced maximum temperature 1 2006
 
FLEETGUARD, INC. (1)
6,820,414 Adsorber aftertreatment system having downstream soot filter 18 2002
 
FORD GLOBAL TECHNOLOGIES, INC. (1)
5,758,496 Particulate and exhaust gas emission control system 37 1996
 
FUTABA SANGYO KABUSHIKI KAISHA (1)
6,588,203 Exhaust device of internal combustion engine 16 2001
 
HITACHI METALS, LTD. (1)
7,107,763 Ceramic honeycomb filter and exhaust gas-cleaning method 6 2003
 
ISUZU CERAMICS RESEARCH INSTITUTE CO., LTD. (1)
5,682,740 Diesel particulate filter apparatus 22 1996
 
JURGEN DORNSEIFFER (1)
7,666,376 Diesel particulate filter comprising a finely dispersed diesel particulate catalyst 2 2002
 
LENZ ENVIRONMENTAL RESOURCES CO., LTD. (1)
7,601,306 Diesel engine particulate filter 1 2003
 
MICROPYRETICS HEATERS INTERNATIONAL, INC. (1)
5,655,212 Porous membranes 23 1995
 
RIKEN (1)
5,665,322 Method of cleaning exhaust gas 8 1995
 
SHARP KABUSHIKI KAISHA (1)
6,538,633 Liquid crystal display apparatus and method for controlling the same 8 2000
 
SUD-CHEMIE INC. (1)
7,138,358 Catalyzed diesel particulate matter filter with improved thermal stability 11 2003
 
SUD-CHEMIE PROTOTECH INC. (1)
6,613,299 Catalyzed diesel particulate matter exhaust filter 21 2001