Patents by Inventor Tokihisa Kawabata

Tokihisa Kawabata 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).

  • Measuring apparatus for measuring an optical property of a fluorescent sample
    Patent number: 5636015
    Abstract: The measuring apparatus of the present invention measures the optical properties of a sample containing a fluorescent material by irradiating the sample with light containing a UV component. In the present invention are provided a first light source for irradiating the sample with light containing a UV component, a second light source for irradiating the sample with light which does not contain a UV component, light receiving element for receiving light reflected from the sample irradiated by said light sources, and output means for generating weighting coefficients for weighting the output of the light receiving element during emission by each light source. The optical properties of the sample is calculated based on the output of the light receiving element for a first light source, output of the light receiving element for a second light source, and the respective weighting coefficients.
    Type: Grant
    Filed: May 15, 1996
    Date of Patent: June 3, 1997
    Assignee: Minolta Co., Ltd.
    Inventors: Kenji Imura, Kiyoshi Imai, Tokihisa Kawabata, Masayuki Makino