Patents by Inventor Nobuyuki Matsumura

Nobuyuki Matsumura has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 5141714
    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.
    Type: Grant
    Filed: July 31, 1990
    Date of Patent: August 25, 1992
    Assignee: Kabushiki Kaisha Riken
    Inventors: Akira Obuchi, Hidenori Yoshiyama, Akihiko Ohi, Hyogoro Aoyama, Hideo Ohuchi, Atsushi Ogata, Koichi Mizuno, Seiji Makino, Kiyohide Yoshida, Gyo Muramatsu, Nobuyuki Matsumura, Satoshi Sumiya, Yoshikazu Takahashi