Patents by Inventor Akira Ikagami

Akira Ikagami 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).

  • Gas detecting apparatus
    Patent number: 4638443
    Abstract: A gas detecting apparatus incorporates a number of gas detecting elements which react with a variety of gases and exhibit gas sensitivities differing from one another in dependence on the gas species. The detection patterns obtained by quantitizing the detection outputs of the gas detecting elements are compared with a plurality of standard patterns prepared previously for assumed combinations of gas species and concentrations thereof. On the basis of the standard pattern which is same or most similar to the detection pattern, the gas species is identified.
    Type: Grant
    Filed: February 21, 1984
    Date of Patent: January 20, 1987
    Assignee: Hitachi, Ltd.
    Inventors: Masayoshi Kaneyasu, Hideo Arima, Mitsuko Ito, Shoichi Iwanaga, Nobuo Sato, Takanobu Noro, Akira Ikagami, Tokio Isogai