Patents by Inventor Hirosi Demati

Hirosi Demati 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).

  • Reverse cleaning regeneration type exhaust emission control device and method of regenerating the same
    Patent number: 5930994
    Abstract: A reverse cleaning regeneration type exhaust emission control device includes two exhaust emission routes communicated with an inlet port of an exhaust emission path. The device includes first path A having a filter A1, a valve A2 and a nozzle A3 and a second path B having a filter B1, a valve B2 and a nozzle B3, and a third path C arranged at an upstream side of the filters A1 and B1 separately from the exhaust emission path extending from the inlet port of the exhaust emission and having a filter C1, a valve C2 and a nozzle C3. The reverse cleanings of the filters A1 and B1 are alternately carried out during the working of the device.
    Type: Grant
    Filed: June 25, 1997
    Date of Patent: August 3, 1999
    Assignee: Ibiden Co., Ltd.
    Inventors: Koji Shimato, Kazuya Naruse, Norihiko Yamamura, Hirosi Demati, Takaya Naiki