Patents by Inventor Michihisa Arakawa

Michihisa Arakawa 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).

  • Air conditioner
    Patent number: 4502290
    Abstract: An air conditioner including a room temperature detector, a room temperature adjuster and a controller is disclosed which is provided with a photodetector, and in which the temperature set in the room temperature adjuster is changed on the basis of the illuminance detected by the photodetector, and a signal for controlling a compressor is generated by the controller in accordance with the temperature thus changed.
    Type: Grant
    Filed: December 5, 1983
    Date of Patent: March 5, 1985
    Assignee: Hitachi, Ltd.
    Inventors: Akio Suzuki, Mitsuo Akiyama, Susumu Kashiwazaki, Shigeyasu Suzuki, Yasunori Tominaga, Michihisa Arakawa