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:
Oct. 11, 2005
Filed:
Mar. 25, 2002
Applicants:
Hiroshi Yamada, Hiroshima, JP;
Seiji Miyoshi, Hiroshima, JP;
Akihide Takami, Hiroshima, JP;
Kenji Okamoto, Hiroshima, JP;
Masahiko Shigetsu, Hirohsima, JP;
Hisaya Kawabata, Hiroshima, JP;
Inventors:
Hiroshi Yamada, Hiroshima, JP;
Seiji Miyoshi, Hiroshima, JP;
Akihide Takami, Hiroshima, JP;
Kenji Okamoto, Hiroshima, JP;
Masahiko Shigetsu, Hirohsima, JP;
Hisaya Kawabata, Hiroshima, JP;
Assignee:
Mazda Motor Corporation, Hiroshima, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01J023/00 ; B01J029/06 ; B01J021/00 ; B01J020/00 ;
U.S. Cl.
CPC ...
Abstract
A catalyst comprises an HC trapping material that is capable of trapping HC in an exhaust gas under low temperatures and releasing HC with a raise in temperature and catalytic material containing a Ce—Pr double oxide capable of oxidizing and purifying HC from the HC trapping material with a high efficiency.