Patents by Inventor Hisako Minegishi

Hisako Minegishi 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).

  • Fluorescence spectrophotometer and wavelength setting method therefor
    Patent number: 4957366
    Abstract: In a fluorescence spectrophotometer a first spectrum of fluorescence emitted by a sample in a state where the wavelength of excitation light is fixed to an arbitrary wavelength; a second spectrum of fluorescence emitted by the sample in a state where the wavelength of excitation light is changed to another wavelength; and the wavelength when corresponding peaks in the two spectra are approximately in accordance with each other is set for the fluorescence wavelength emitted by said sample.
    Type: Grant
    Filed: February 22, 1989
    Date of Patent: September 18, 1990
    Assignee: Hitachi, Ltd.
    Inventors: Hiroyuki Koshi, Minoru Owada, Hisako Minegishi, Takayuki Ono