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. 28, 2008
Filed:
Jul. 29, 2003
Masaaki Okubo, Sakai, JP;
Toshiaki Yamamoto, Sakai, JP;
Shinichi Miwa, Tajimi, JP;
Abstract
The present invention is characterized in that a casingconnected to an exhaust systema honeycomb filterplaced in the inside of the casingthe honeycomb filter having a plurality of cells partitioned by partition walls, and plasma generation electrodesplaced being faced each other by sandwiching the honeycomb filter there are included, particulate matter contained in an exhaust gas is collected by the honeycomb filternitrogen monoxide contained in the exhaust gas is oxidized to nitrogen dioxide by nonthermal plasma generated between a pulse electrodeand an earth electrodeconstituting the plasma generation electrodescombustible materials in the particulate matter collected and deposited on the surface of the partition walls are removed through oxidation by the nitrogen dioxide produced. As a result, the honeycomb filtercan be regenerated.