Patents by Inventor Kazuhisa Toyama

Kazuhisa Toyama 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).

  • Digester temperature distribution control system
    Patent number: 5547545
    Abstract: A digester temperature distribution control system comprises an optical fiber type temperature measuring unit utilizing the Raman scattering effect, reference temperature measuring unit, reference point temperature setting unit, measured temperature distribution calculating unit, target temperature distribution calculating unit and control unit. The optical fiber type temperature measuring unit is provided in that digester charged with chips and equipped with control valves for controlling steam for heating the charged chip mass in the digester and is adapted to detect temperature at a plurality of points in a length thereof including a given reference point in the digester.
    Type: Grant
    Filed: April 28, 1994
    Date of Patent: August 20, 1996
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Hiroshi Egi, Kazuhisa Toyama