Patents by Inventor Tesshi Shigemori

Tesshi Shigemori 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).

  • Smell sensing element and smell sensing device
    Patent number: 5047214
    Abstract: A smell sensing element and a smell sensing device utilizing the element. The smell sensing element has a semiconductor portion formed mainly of SnO.sub.2. The semiconductor portion has a first component of at least one selected from the group consisting of oxides of alkaline earth metals and a second component of at least one selected from the group consisting of oxides of Sc, Y, Ti, Zr, Hf, Th, Al, Ga and lanthanoids added thereto.
    Type: Grant
    Filed: March 8, 1989
    Date of Patent: September 10, 1991
    Assignee: New Cosmos Electric Co., Ltd.
    Inventors: Kiyoshi Fukui, Tesshi Shigemori, Katsuo Ehara
  • Gas leakage detector
    Patent number: 4369647
    Abstract: A gas leakage detector comprising a solid state gas sensor having a sintered metallic oxide block which changes thermal conductivity by chemical adsorption thereto and a wire for transforming thermal conductivity charges into an electric signal. A suction pump draws gas through a gas intake path to the gas sensor. A voltage-frequency converter generates a pulse frequency that is a function of the gas sensor voltage. An alarm indicator including sound and/or light is controlled to pulse by the output pulse of the voltage frequency converter.
    Type: Grant
    Filed: March 21, 1980
    Date of Patent: January 25, 1983
    Assignee: New Cosmos Electric Company Limited
    Inventors: Tesshi Shigemori, Yoshinao Nozawa, Teruhisa Kojima, Satoshi Kitajima