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. 22, 2011
Filed:
Dec. 04, 2006
Reiko Doumeki, Tokyo, JP;
Yoshinaka Takeda, Tokyo, JP;
Satoshi Hiranuma, Tokyo, JP;
Ritsuko Shinozaki, Tokyo, JP;
Shinichi Saitou, Tokyo, JP;
Yasuko Suzuki, Tokyo, JP;
Reiko Doumeki, Tokyo, JP;
Yoshinaka Takeda, Tokyo, JP;
Satoshi Hiranuma, Tokyo, JP;
Ritsuko Shinozaki, Tokyo, JP;
Shinichi Saitou, Tokyo, JP;
Yasuko Suzuki, Tokyo, JP;
Abstract
An exhaust gas purification device comprises a NOx catalyst for purifying NOx contained in exhaust gas by using ammonia as a reducing agent, an ammonia supply device for supplying ammonia to the NOx catalyst, a catalyst temperature sensor for detecting the internal temperature of the NOx catalyst, and a control unit that stops the ammonia supply from the ammonia supply device when the stop condition is satisfied that the internal temperature of the NOx catalyst becomes equal to or higher than first prescribed temperature in the process where ammonia is supplied from the ammonia supply device to the NOx catalyst.