The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 30, 2013
Filed:
Aug. 26, 2008
Stephen J. Golden, Santa Barbara, CA (US);
Randal Hatfield, Oxnard, CA (US);
Johnny Ngo, Oxnard, CA (US);
Jason Pless, Ventura, CA (US);
Stephen J. Golden, Santa Barbara, CA (US);
Randal Hatfield, Oxnard, CA (US);
Johnny Ngo, Oxnard, CA (US);
Jason Pless, Ventura, CA (US);
Catalytic Solutions, Inc., Ventura, CA (US);
ECS Holdings, Inc., Cleveland, OH (US);
Abstract
The present invention relates improving the performance of nitrogen oxide reduction by exposing rich exhaust to catalysts systems comprising a catalyst, wherein the catalyst systems are free of platinum group metals. The present invention also relates to improving reduction of carbon monoxide and hydrocarbon in exhaust by introducing air into a portion of the exhaust between a first catalyst system and a second catalyst system. The present invention also relates to improving nitrogen oxide, carbon monoxide and hydrocarbon reduction by (1) exposing rich exhaust to a first catalysts system, wherein the exhaust has an R value of greater than 1.0 and the first catalyst system comprises a catalyst and is free of platinum group metals and (2) introducing air into a portion of the exhaust in between the first catalyst system and a second catalyst system, wherein the second catalyst system is free of platinum group metals.