Patents by Inventor Michiya Matuda

Michiya Matuda 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).

  • Deodorizer device
    Patent number: 5078971
    Abstract: A deodorizer device for use in a refrigerator has an absorbent capable of absorbing odor components from air, a layer of a photocatalyst deposited on the surface of the absorbent, and a light source for illuminating the photocatalyst layer to excite the same. Air containinig odor components is forced by a blower to flow through the absorbent.
    Type: Grant
    Filed: December 14, 1989
    Date of Patent: January 7, 1992
    Assignee: Hitachi, Ltd.
    Inventors: Michiya Matuda, Tooru Kobayashi, Fumikazu Washimi, Masaei Kawashima, Masaaki Kashiwabuchi, Kikuzi Takahashi, Atsushi Kanai
  • Refrigerator control system
    Patent number: 4566289
    Abstract: A novel refrigerator control system is disclosed which comprises an inverter for driving a motor for a compressor, and a change-over device for driving the compressor directly with a commercial power supply when the compressor motor is not driven by the inverter.
    Type: Grant
    Filed: November 9, 1984
    Date of Patent: January 28, 1986
    Assignee: Hitachi, Ltd.
    Inventors: Kenichi Iizuka, Hideo Uzuhashi, Yoshihisa Uneyama, Michiya Matuda, Minoru Kobayashi