Patents by Inventor Ryuichiro Araki

Ryuichiro Araki 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).

  • Method and apparatus for determination of optical properties of light scattering material
    Patent number: 5867807
    Abstract: A method for determination of optical properties of light scattering material, includes calculating temporal changes in output light intensity with respect to a large number of combinations of reduced scattering coefficients .mu.s' and absorption coefficients .mu.a of a light-scattering material sample, storing the results, irradiating the sample with picosecond pulses of light and measuring temporal changes in the intensity of light coming out from the sample. When a measured temporal change in output light intensity is the same as or similar to a stored temporal change in intensity, the reduced scattering coefficient .mu.s' and absorption coefficient .mu.a of the stored temporal change in output light intensity are determined as the .mu.s' and .mu.a of the sample.
    Type: Grant
    Filed: October 25, 1996
    Date of Patent: February 2, 1999
    Assignees: Agency of Industrial Science & Technology, Ministry of International Trade & Industry, Hamamatsu Photonics K.K.
    Inventors: Yukio Yamada, Ryuichiro Araki, Yutaka Yamashita