Patents by Inventor Zenko Yoshida

Zenko Yoshida 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 of measuring the absorption spectra of solutions by laser induced photothermal displacement spectroscopy
    Patent number: 5926273
    Abstract: Improved method of laser induced photothermal displacement spectroscopy comprises the steps of applying pulsed laser light to the solution in a sample container, whereupon the light energy absorbed by the solution is converted to heat, with the resulting elastic wave displacing the wall of the sample container by vibrations, detecting the displacement by heterodyne interferometry, and measuring the absorption spectrum of the solution.
    Type: Grant
    Filed: May 28, 1997
    Date of Patent: July 20, 1999
    Assignee: Japan Atomic Energy Research Institute
    Inventors: Takaumi Kimura, Yoshiharu Kato, Zenko Yoshida