Patents by Inventor Hidehiko Takagi

Hidehiko Takagi 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).

  • Arrangement for cooking either with a heat source or a microwave source
    Patent number: 4334137
    Abstract: A cooking apparatus of the type that a heating chamber is provided with a heat source and a magnetron so that cooking by heat of the heat source and cooking by microwave of the magnetron can be carried out. There are provided, on the outer side of the heating chamber, a stirrer chamber and a waveguide which is in communication therewith and is disposed on the output side of the magnetron. There is provided, on the further outer side thereof, a ventilation duct which is in communication with a cooling fan. There are disposed in the ventilation duct on the upstream side and on the downstream side thereof a radiation fin of the magnetron and a windmill for driving a stirrer provided in the stirrer chamber.
    Type: Grant
    Filed: October 18, 1979
    Date of Patent: June 8, 1982
    Assignee: Rinnai Kabushiki Kaisha
    Inventors: Hidehiko Takagi, Hisao Hayashi, Kazuo Ogawa, Yoshihiro Kanaya