Patents by Inventor Katsuo Ehara

Katsuo Ehara 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
  • Odor identifying apparatus and method
    Patent number: 4884435
    Abstract: An odor identifying apparatus comprising a gas sensor unit including at least two sensors having different characteristics for simultaneously detecting odorous components arising from a sample and outputting detection signals, a display device for displaying detection results from the sensor unit as a single output signal, and an ozone gas generator for supplying ozone gas into a chamber in which the sample is placed. An odor identifying method is also disclosed which identifies odorous components by using this apparatus.
    Type: Grant
    Filed: November 17, 1988
    Date of Patent: December 5, 1989
    Inventor: Katsuo Ehara