Patents by Inventor Atsushi Hiyama

Atsushi Hiyama 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).

  • Spectrophotometer
    Patent number: 7050164
    Abstract: In order to improve spectral measurement accuracy during high-speed wavelength shifting, the appropriate sensitivity of the detection system is maintained by, prior to measurement of a sample, measuring the voltage value, then storing this value into a table, and maintaining the voltage value to be applied to the photodetector, and during measurement of the sample, reading out the maintained voltage value and applying it to the photodetector.
    Type: Grant
    Filed: August 30, 2001
    Date of Patent: May 23, 2006
    Assignee: Hitachi, Ltd.
    Inventors: Kouhei Kabuki, Yoshisada Ebata, Tadashi Suzuki, Atsushi Hiyama
  • Spectrophotometer
    Publication number: 20020050560
    Abstract: In order to improve spectral measurement accuracy during high-speed wavelength shifting, the appropriate sensitivity of the detection system is maintained by, prior to measurement of a sample, measuring the voltage value, then storing this value into a table, and maintaining the voltage value to be applied to the photodetector, and during measurement of the sample, reading out the maintained voltage value and applying it to the photodetector.
    Type: Application
    Filed: August 30, 2001
    Publication date: May 2, 2002
    Inventors: Kouhei Kabuki, Yoshisada Ebata, Tadashi Suzuki, Atsushi Hiyama