Patents by Inventor Tomiyasu Koyama

Tomiyasu Koyama 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 somato-measuring apparatus
    Patent number: 4249540
    Abstract: An optical apparatus for somato-measuring such as measuring of fluid velocity in a minute blood vessel by a laser Doppler microscope, comprises a laser supplying at least two laser beams through a transparent sheet provided on the surface of a living object to be measured, the transparent sheet having a refractive index approximated to that of the object in order to avoid reflected lights from the surface of the object and to measure necessary lights scattered by the internal part of the object.
    Type: Grant
    Filed: April 17, 1979
    Date of Patent: February 10, 1981
    Assignee: President of Hokkaido University
    Inventors: Tomiyasu Koyama, Masashi Horimoto, Midori Horimoto