Patents by Inventor Hidenori Ishizawa

Hidenori Ishizawa 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).

  • Infrared gas analyzer
    Patent number: 4188534
    Abstract: The performance of a single light source parallel chambertype infrared gas analyzer is improved by enlarging the single inlet opening of the light divider and by positioning the light source such that the center axes of the two light passages of the light divider intersect at the light source. The assembly and alignment adjustment of the various functional components of the analyzer is also simplified.
    Type: Grant
    Filed: April 20, 1978
    Date of Patent: February 12, 1980
    Assignee: Fuji Electric Co., Ltd.
    Inventors: Atsuo Watanabe, Hidenori Ishizawa, Masahiro Uno