Patents by Inventor Murakami Tomoko

Murakami Tomoko 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).

  • Liquid crystal optical device comprising a liquid crystal pixel and a parallel circuit for providing a gradation of display
    Patent number: 5260817
    Abstract: A liquid crystal optical device has a ferroelectric liquid crystal layer held in a gap defined by at least a pair of electrodes, wherein the crystal pixel has a time constant. The liquid crystal device also has a parallel circuit having a time constant greater than the time constant of the liquid crystal pixel and less than a field period for giving a gradation change to the pixel by repeated application of a gradation signal.
    Type: Grant
    Filed: March 25, 1992
    Date of Patent: November 9, 1993
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shuzo Kaneko, Ryoji Fujiwara, Tomoko Maruyama, Murakami Tomoko