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:
Aug. 25, 1992
Filed:
Jul. 31, 1990
Akira Obuchi, Tsukuba, JP;
Hidenori Yoshiyama, Tsukuba, JP;
Akihiko Ohi, Tsukuba, JP;
Hyogoro Aoyama, Tsukuba, JP;
Hideo Ohuchi, Tsukuba, JP;
Atsushi Ogata, Tsukuba, JP;
Koichi Mizuno, Ibaraki, JP;
Seiji Makino, Saitama, JP;
Kiyohide Yoshida, Saitama, JP;
Gyo Muramatsu, Saitama, JP;
Nobuyuki Matsumura, Saitama, JP;
Satoshi Sumiya, Saitama, JP;
Yoshikazu Takahashi, Saitama, JP;
Kabushiki Kaisha Riken, Tokyo, JP;
Abstract
An exhaust gas cleaner comprising (a) at least one filter made of a heat-resistant and electrically insulating material for trapping floating fine particles in an exhaust gas; and (b) at least a pair of electrodes stacked with the filter alternately, voltage being applied between the adjacent electrodes to burn electrically conductive and burnable fine particles trapped in the filter by heat generated by a current flowing between the adjacent electrodes, and the direction of the flow of the exhaust gas in the filter being essentially parallel to that of the laminate surface of the electrodes. The filter may carry a catalyst which functions to reduce harmful gas components in the exhaust gas.