Patents by Inventor Shigeharu Yoshikawa

Shigeharu Yoshikawa 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).

  • Projection-type liquid crystal display device
    Patent number: 6072458
    Abstract: A projection-type liquid crystal display device having a light source for emitting a luminous flux; a liquid crystal light valve for modulating the luminous flux emitted by the light source means; a liquid crystal drive circuit for applying the common voltage to the common electrode and the video signal to the source electrode; a projection lens for projecting the luminous flux modulated by the liquid crystal light valve onto a screen; a liquid crystal temperature detector for detecting temperature in the vicinity of the liquid crystal light valve; and a controller. The controller controls the common voltage and/or the source voltage on the basis of values detected by the liquid crystal temperature detector in such a way that fluctuation in the light transmittance of the liquid crystal light valve means is reduced.
    Type: Grant
    Filed: April 24, 1997
    Date of Patent: June 6, 2000
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Katsumi Asakawa, Hiroaki Ishitani, Kozo Ishida, Kouhei Tamano, Shigeharu Yoshikawa, Hiroaki Sugiura
  • Projection-type liquid crystal display apparatus
    Patent number: 6072459
    Abstract: A projection-type liquid crystal display apparatus that prevents deterioration of a projected image occurring attributable to lowering of the temperature of a liquid crystal panel, the difference in the temperature between the liquid crystal panels and temperature inclination in the liquid crystal panel.
    Type: Grant
    Filed: October 28, 1997
    Date of Patent: June 6, 2000
    Assignee: Mitsubishi Denki Kabushiki Kaisha
    Inventors: Katsumi Asakawa, Hiroaki Ishitani, Kouhei Tamano, Shigeharu Yoshikawa, Akihisa Miyata
  • Process for the production of branching enzyme, and a method for improving the qualities of food products therewith
    Patent number: 4454161
    Abstract: The present invention relates to a process for the production of branching enzyme, and a method for improving the qualities of food products therewith. According to the present invention, a large amount of branching enzyme with a high specific activity can be easily obtained, and employment of the branching enzyme in food processing remarkably improves the qualities of food products without changing the desirable inherent properties of their amylaceous constituent(s); thus, said food products retain their qualities over a long period of time, prolonging extremely their shelf lives.
    Type: Grant
    Filed: January 4, 1982
    Date of Patent: June 12, 1984
    Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
    Inventors: Shigetaka Okada, Sumio Kitahata, Shigeharu Yoshikawa, Toshiyuki Sugimoto, Kaname Sugimoto
  • Processes for producing syrups of syrup solids containing fructose-terminated oligosaccharides
    Patent number: 4254227
    Abstract: The present invention relates to processes for producing syrups or syrup solids containing fructose-terminated oligosaccharides, characterized by subjecting a mixture containing liquefied starch and either fructose or sucrose to the action of immobilized cyclodextrin glucanotransferase E.C. 2.4.1.19.
    Type: Grant
    Filed: March 8, 1979
    Date of Patent: March 3, 1981
    Assignee: Kabushiki Kaisha Hayashibara Seibutsu Kagaku Kenkyujo
    Inventors: Shigetaka Okada, Sumio Kitahata, Shigeharu Yoshikawa, Kentaro Miyake