Patents by Inventor Hisao Naganuma

Hisao Naganuma 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).

  • Radiant-type heater
    Patent number: 4919120
    Abstract: A radiant-type heater is disclosed which has a deflection plate in an upper part of a casing, a burner in a lower part of the casing, and a heating element formed of a thin metal sheet. The heating element is suspended from the deflection plate downwardly towards the burner.
    Type: Grant
    Filed: June 6, 1989
    Date of Patent: April 24, 1990
    Assignee: Sanyo Electric Co., Ltd.
    Inventors: Tadao Horikoshi, Hisao Naganuma, Minoru Sugimoto, Masanobu Numao