Patents by Inventor Chouji Keino

Chouji Keino 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).

  • Microwave oven with a vertically translatable resistance heater or the like
    Patent number: 4357513
    Abstract: A microwave oven having a vertically translatable resistance heater disposed in the heating chamber thereof is disclosed. The two end portions of the heater extend from the interior of the heating chamber to the exterior thereof through a pair of parallel vertically elongated openings. The heater is vertically translated by a translation mechanism along the two elongated openings. The leakage of the electromagnetic waves through the elongated openings is prevented for the most part by annular choke chambers which are situated around the elongated openings and have communication ports which oppose the extending portions of the heater and through which electromagnetic waves leaking from the interior of the heating chamber through the elongated openings are introduced, thereby extinguishing the electromagnetic waves leaking through the elongated openings.
    Type: Grant
    Filed: July 30, 1980
    Date of Patent: November 2, 1982
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Yukio Kawata, Tetsuo Obata, Chouji Keino, Isamu Tayama