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:
Nov. 05, 1991
Filed:
Jun. 06, 1990
Applicant:
Inventors:
Raymond E Bedford, Burton, MI (US);
William J LaBarge, Bay City, MI (US);
Assignee:
General Motors Corporation, Detroit, MI (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01F / ; B01J / ;
U.S. Cl.
CPC ...
502304 ; 423263 ; 4232132 ;
Abstract
An improved particulate washcoat for use on a ceramic or metallic support is disclosed for the treatment of automotive exhaust gases. The mixture consists essentially of high surface area ceria particles and alumina particles wherein the ceria particles bear copper oxide. Preferably, one of chromium oxide, manganese oxide and tin oxide are dispersed over both the ceria and alumina particles of the washcoat.