US Patent No: 5,270,024

Number of patents in Portfolio can not be more than 2000

Process for reducing nitrogen oxides from exhaust gas

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Abstract

A catalyst for reducing nitrogen oxides from an exhaust gas containing the same in an oxygen rich atmosphere comprising (i) a zeolite having a molar ratio of SiO.sub.2 /Al.sub.2 O.sub.3 of at least 10, (ii) copper, and (iii) a rare earth ion, an alkaline earth metal and/or a valence variable metal.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
TOSOH CORPORATIONYAMAGUCHI676
KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHOAICHI-KEN845
TOYOTA JIDOSHA KABUSHIKI KAISHAAICHI-KEN12954

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fukui, Masayuki Kawasaki, JP 60 490
Igawa, Kazushige Shinnanyo, JP 10 187
Ishibashi, Kazunobu Toyota, JP 13 168
Kamiyama, Katsumi Tokuyama, JP 3 100
Kasahara, Senshi Shinnanyo, JP 11 206
Kondoh, Shiroh Atsugi, JP 22 449
Matsumoto, Shinichi Kanagawa-ken, JP 141 1045
Nakano, Masao Kawasaki, JP 135 1712
Suzuki, Tadashi Tokyo, JP 245 2208
Takeshima, Shinichi Mishima, JP 97 2090
Yokota, Koji Nagoya, JP 28 634

Cited Art

Patent Info (Count) # Cites Year
 
BABCOCK-HITACHI KABUSHIKI KAISHA (1)
4,798,813 Catalyst for removing nitrogen oxide and process for producing the catalyst 20 1987
 
CANON KABUSHIKI KAISHA (1)
7,312,848 Positioning apparatus, exposure apparatus, and device manufacturing method 3 2006
 
DEGUSSA AG (1)
5,116,586 Method for the reduction of nitrogen oxides from waste gases using a zeolite 31 1989
 
INSTITUTE OF RESEARCH AND INNOVATION (1)
5,041,272 Method for removing nitrogen oxides from exhaust gases 39 1991
 
MORGAN GUARANTY TRUST COMPANY OF NEW YORK, AND MORGAN BANK ( DELAWARE ) AS COLLATERAL ( AGENTS ) SEE RECORD FOR THE REMAINING ASSIGNEES. (1)
4,297,328 Three-way catalytic process for gaseous streams 86 1979
 
NORTHEAST UTLITIES SERVICE COMPANY, A CORP.OF CT. (1)
4,473,535 Process for reducing nitric oxides 19 1981
 
UOP LLC (1)
4,331,644 Combustion catalyst and process for using same 13 1979

Patent Citation Ranking

Forward Cites

Patent Info (Count) # Cites Year
 
FORD GLOBAL TECHNOLOGIES, LLC (33)
6,843,051 Method and apparatus for controlling lean-burn engine to purge trap of stored NOx 0 2000
6,810,659 Method for determining emission control system operability 2 2000
6,708,483 Method and apparatus for controlling lean-burn engine based upon predicted performance impact 3 2000
6,629,453 Method and apparatus for measuring the performance of an emissions control device 3 2000
6,594,989 Method and apparatus for enhancing fuel economy of a lean burn internal combustion engine 30 2000
6,691,507 Closed-loop temperature control for an emission control device 10 2000
6,860,100 Degradation detection method for an engine having a NOx sensor 2 2001
6,694,244 Method for quantifying oxygen stored in a vehicle emission control device 5 2001
6,691,020 Method and system for optimizing purge of exhaust gas constituent stored in an emission control device 2 2001
6,650,991 Closed-loop method and system for purging a vehicle emission control 2 2001
6,615,577 Method and system for controlling a regeneration cycle of an emission control device 20 2001
6,604,504 Method and system for transitioning between lean and stoichiometric operation of a lean-burn engine 6 2001
6,553,754 Method and system for controlling an emission control device based on depletion of device storage capacity 13 2001
6,990,799 Method of determining emission control system operability 7 2001
7,168,239 Method and system for rapid heating of an emission control device 8 2002
7,111,450 Method for controlling the temperature of an emission control device 11 2002
7,032,572 Method for controlling an engine to obtain rapid catalyst heating 5 2002
6,925,982 Overall scheduling of a lean burn engine system 1 2002
6,868,827 Method for controlling transitions between operating modes of an engine for rapid heating of an emission control device 20 2002
6,769,398 Idle speed control for lean burn engine with variable-displacement-like characteristic 27 2002
6,758,185 Method to improve fuel economy in lean burn engines with variable-displacement-like characteristics 25 2002
6,745,747 Method for air-fuel ratio control of a lean burn engine 19 2002
6,735,938 Method to control transitions between modes of operation of an engine 44 2002
6,736,120 Method and system of adaptive learning for engine exhaust gas sensors 10 2002
6,736,121 Method for air-fuel ratio sensor diagnosis 48 2002
6,725,830 Method for split ignition timing for idle speed control of an engine 8 2002
6,715,462 Method to control fuel vapor purging 22 2002
6,568,177 Method for rapid catalyst heating 84 2002
6,874,490 Method and system of adaptive learning for engine exhaust gas sensors 14 2004
6,955,155 Method for controlling transitions between operating modes of an engine for rapid heating of an emission control device 6 2004
7,059,112 Degradation detection method for an engine having a NOx sensor 10 2004
7,047,932 Method to improve fuel economy in lean burn engines with variable-displacement-like characteristics 2 2004
7,069,903 Idle speed control for lean burn engine with variable-displacement-like characteristic 8 2004
 
FORD GLOBAL TECHNOLOGIES, INC. (25)
6,539,704 Method for improved vehicle performance 4 2000
6,499,293 Method and system for reducing NOx tailpipe emissions of a lean-burn internal combustion engine 9 2000
6,487,849 Method and apparatus for controlling lean-burn engine based upon predicted performance impact and trap efficiency 13 2000
6,487,850 Method for improved engine control 9 2000
6,481,199 Control for improved vehicle performance 10 2000
6,477,832 Method for improved performance of a vehicle having an internal combustion engine 13 2000
6,438,944 Method and apparatus for optimizing purge fuel for purging emissions control device 9 2000
6,434,930 Method and apparatus for controlling lean operation of an internal combustion engine 2 2000
6,427,437 Method for improved performance of an engine emission control system 6 2000
6,374,597 Method and apparatus for accessing ability of lean NOx trap to store exhaust gas constituent 13 2000
6,360,530 Method and apparatus for measuring lean-burn engine emissions 7 2000
6,327,847 Method for improved performance of a vehicle 13 2000
6,308,515 Method and apparatus for accessing ability of lean NOx trap to store exhaust gas constituent 15 2000
6,308,697 Method for improved air-fuel ratio control in engines 10 2000
6,370,868 Method and system for purge cycle management of a lean NOx trap 20 2000
6,389,803 Emission control for improved vehicle performance 7 2000
6,546,718 Method and system for reducing vehicle emissions using a sensor downstream of an emission control device 5 2001
6,539,706 Method and system for preconditioning an emission control device for operation about stoichiometry 1 2001
6,502,387 Method and system for controlling storage and release of exhaust gas constituents in an emission control device 11 2001
6,490,860 Open-loop method and system for controlling the storage and release cycles of an emission control device 7 2001
6,487,853 Method and system for reducing lean-burn vehicle emissions using a downstream reductant sensor 7 2001
6,467,259 Method and system for operating dual-exhaust engine 44 2001
6,463,733 Method and system for optimizing open-loop fill and purge times for an emission control device 31 2001
6,453,666 Method and system for reducing vehicle tailpipe emissions when operating lean 3 2001
6,490,856 Control for improved vehicle performance 8 2002
 
TOYOTA JIDOSHA KABUSHIKI KAISHA (6)
5,443,803 Catalyst for purifying exhaust gas 22 1992
5,473,887 Exhaust purification device of internal combustion engine 154 1993
5,412,945 Exhaust purification device of an internal combustion engine 86 1993
5,423,181 Exhaust gas purification device of an engine 69 1993
5,437,153 Exhaust purification device of internal combustion engine 129 1994
5,968,462 Process for purifying exhaust gases 7 1997
 
TOSOH CORPORATION (5)
5,374,409 Purifying gases with an alkali metal and transition metal containing zeolite 6 1991
5,807,528 Catalyst for purifying exhaust gas 10 1993
5,449,504 Process for removing nitrogen oxides from oxygen rich exhaust gas 6 1993
5,514,355 Method for purifying an oxygen-rich exhaust gas 5 1994
5,382,416 Method for purifying exhaust gas 16 1994
 
W.R. GRACE & CO.-CONN. (3)
7,304,011 Compositions and processes for reducing NO.sub.x emissions during fluid catalytic cracking 3 2004
7,918,991 Compositions and processes for reducing NOx emissions during fluid catalytic cracking 0 2006
7,641,787 emissions during fluid catalytic cracking 0 2008
 
BASF CORPORATION (2)
7,704,475 Zeolite catalyst with improved NOx reduction in SCR 1 2006
7,968,068 Zeolite catalyst with improved NOx reduction in SCR 0 2010
 
BASF SE (2)
5,965,098 Methods and devices for scrubbing gases 3 1997
6,696,389 Process and apparatus for cleaning a gas flow 2 1999
 
AIR PRODUCTS AND CHEMICALS, INC. (1)
5,451,385 Control of exhaust emissions from methane-fueled internal combustion engines 10 1992
 
ARD CO., PTE. LTD. (1)
5,688,740 Three-way catalyst for treating exhaust gases 7 1996
 
CONSIGLIO NAZIONALE DELLE RICERCHE (1)
6,790,423 Method for the catalytic oxidation of volatile organic compounds 0 2003
 
GRAND-PAROISSE S.A. (1)
6,221,324 Process for the removal from gases of nitrogen oxides NOx by selective catalytic reduction (SCR) using ammonia over zeolite catalysts not causing the formation of nitrogen protoxide 16 1998
 
INSTITUT REGIONAL DES MATARIAUX AVANCES (IRMS) (1)
7,238,641 Catalyst based on ferrierite/iron for catalytic reduction of nitrous oxide 1 2003
 
INSTITUT REGIONAL DES MATERIAUX AVANCES (IRMA) (1)
6,682,710 Catalytic reduction of nitrous oxide content in gases 3 2001
 
KABUSHIKI KAISHA TOYOTA CHUO KENKYUSHO (1)
5,474,745 Catalytic converter for purifying exhaust gas 7 1994
 
MITSUBISHI JIDOSHA KOGYO K.K. (A.K.A. MITSUBISHI MOTORS CORPORATION) (1)
6,794,330 Exhaust gas purifying catalyst 5 2001
 
POSTECH FOUNDATION (1)
7,049,261 Zeolite catalyst and preparation process for NO.sub.x reduction 13 2003
 
RICARDO, INC. (1)
6,964,157 Exhaust emission control system and method for removal and storage of vehicle exhaust gas nitrogen oxides during cold operation 6 2002
 
UCHICAGO ARGONNE, LLC (1)
7,220,692 Catalyst for selective NO.sub.x reduction using hydrocarbons 0 2003
 
UMICORE AG & CO. KG (1)
6,235,255 Catalyst support having zeolite with high sodium back ion-exchange capacity and catalysts made therefrom 6 1999
 
UNIVERSITY OF FLORIDA RESEARCH FOUNDATION, INC. (1)
5,705,136 Catalyzed decomposition of nitrogen oxides on metal oxide supports 10 1995