Patents by Inventor Hiromi Isonae

Hiromi Isonae 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).

  • Dew sensor
    Patent number: 4481813
    Abstract: A dew sensor of direct current type and resistance-lowering type with increasing humidity for quick and sharp detection of dewing is provided, which comprises a pair of counterposed electrodes, humidity-sensitive layer of insulating porous metal oxide with a porosity of 20 to 60% provided on and between the counterposed electrodes, and an organic polymer coating layer having a thickness of 0.05 to 2 .mu.m provided on the humidity-sensitive layer.
    Type: Grant
    Filed: October 27, 1982
    Date of Patent: November 13, 1984
    Assignee: Hitachi, Ltd.
    Inventors: Hirayoshi Tanei, Shoichi Iwanaga, Akira Ikegami, Hiroshi Otsu, Hiromi Isonae