Patents by Inventor Itsuro Ando

Itsuro Ando 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).

  • Optical gas sensor
    Patent number: 5030009
    Abstract: An optical gas sensor comprises a light emitting element; a photo detecting element; a gas sensing element including a thin film containing an organic pigment, the gas sensing element responding to light emitted from the light emitting element to emit fluorescence or phosphorescence; and a filter for selectively picking up fluoroescence or phosphorescence, the gas sensing element and the filter being disposed in an optical path ranging from the light emitting element to the photo detecting element.
    Type: Grant
    Filed: March 16, 1990
    Date of Patent: July 9, 1991
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Itsuro Ando, Makoto Furuki, Lyong S. Pu