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.

Date of Patent:
Feb. 23, 2010

Filed:

Aug. 01, 2005
Applicants:

Tadao Nakatsuji, Kashiba, JP;

Norio Suzuki, Wako, JP;

Hiroshi Ohno, Wako, JP;

Naohiro Sato, Wako, JP;

Inventors:

Tadao Nakatsuji, Kashiba, JP;

Norio Suzuki, Wako, JP;

Hiroshi Ohno, Wako, JP;

Naohiro Sato, Wako, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B01D 53/56 (2006.01); B01D 53/94 (2006.01);
U.S. Cl.
CPC ...
Abstract

A method comprising subjecting fuel to combustion while the combustion atmosphere of the fuel is oscillated periodically and alternately between rich and lean conditions, leading the exhaust gas formed to a catalytic reactor, and bringing the exhaust gas into contact with a catalyst in the catalytic reactor to conduct catalytic reduction of nitrogen oxides contained in the exhaust gas, wherein the catalyst comprises as catalyst components:


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