Patents by Inventor Tooru Onouchi

Tooru Onouchi 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).

  • Humidity sensor
    Patent number: 4737707
    Abstract: A humidity sensing portion (7) and an electrode (9) of a heating regeneration type humidity sensor provided with a heater (8) are covered by a casing (12) and a holding portion (11). An opening (6) for communication between placing the interior and exterior of the sensor in communication is formed in the casing (12) or the holding portion (11) so that a solid angle, of a vertex at the central portion of the humidity sensing portion (7) or the casing (12) of a polyhedron having a base bounded by the opening is within the range of 1/1000-1/10 radian, and thus, adhesion of harmful substances, especially inorganic harmful substances, onto the humidity sensing portion (7) or the electrode (9) is prevented.
    Type: Grant
    Filed: April 21, 1986
    Date of Patent: April 12, 1988
    Assignees: Matsushita Electric Industrial Co., Ltd., NGK Spark Plug Company, Matsushita Seiko Co., Ltd.
    Inventors: Keijiro Mori, Hideaki Yagi, Ichiro Shimano, Tooru Onouchi