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:
May. 20, 2008

Filed:

Mar. 05, 2004
Applicants:

Yoshiyuki Nakanishi, Saitama, JP;

Kenji Dosaka, Saitama, JP;

Keizo Iwama, Saitama, JP;

Shinya Ishimaru, Saitama, JP;

Inventors:

Yoshiyuki Nakanishi, Saitama, JP;

Kenji Dosaka, Saitama, JP;

Keizo Iwama, Saitama, JP;

Shinya Ishimaru, Saitama, JP;

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
B01D 53/34 (2006.01); B01D 50/00 (2006.01);
U.S. Cl.
CPC ...
Abstract

An exhaust gas purification system that is equipped, from an upstream side toward downstream side through which an exhaust gas flows, with a plasma reactor and a NOselective reduction catalyst unit having a NOselective reduction catalyst layer acting on the exhaust gas, and which system provides a reducing agent adding means adding a reducing agent to the exhaust gas at an upstream side of the plasma reactor, wherein the NOselective reduction catalyst layer comprises nickel and a NOselective reduction catalyst or wherein the NOselective reduction catalyst layer contains γ-alumina that supports magnesium or wherein the NOselective reduction catalyst unit comprises a first purification unit where an exhaust gas via the plasma reactor is introduced, and a second purification unit where an exhaust gas via the first purification unit is introduced.


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