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:
Mar. 26, 2002
Filed:
Mar. 20, 2000
Applicant:
Inventors:
Yoshiharu Miyake, Susono, JP;
Shinji Tsuji, Numazu, JP;
Assignee:
Toyota Jidosha Kabushiki Kaisha, Toyota, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01J 2/302 ; B01J 2/304 ;
U.S. Cl.
CPC ...
B01J 2/302 ; B01J 2/304 ;
Abstract
A catalyst for purifying an exhaust gas includes a composite oxide including gold (Au) and having crystalline unit cells in every one of which an Au ion is disposed. Since the Au exists in a state of an ion, the catalyst exhibits a good catalytic activity. Since the Au is present in such a manner that it is surrounded by the other elements, it is inhibited from moving. As a result, the catalyst is improved in terms of the heat resistance.