Patents by Inventor Yoshiyuki Nakura

Yoshiyuki Nakura 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 element
    Patent number: 4879144
    Abstract: A liquid crystal element comprises a cell structure where a liquid crystal is disposed between a pair of electrode substrates, a first electrode substrate of said pair of electrode substrates having a first resin layer formed at the surface contacting the liquid crystal of the first electrode substrate by thermal curing resulted from dehydration ring closure, the first resin layer being able to control orientation of the liquid crystal, and a second electrode substrate having a second resin layer formed at the surface contacting the liquid crystal of the second electrode substrate by thermal curing at a temperature lower than that at which the first resin layer is formed, the second resin layer being able to control orientation of the liquid crystal.
    Type: Grant
    Filed: April 6, 1989
    Date of Patent: November 7, 1989
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoshiyuki Nakura, Yasuo Kato
  • Liquid crystal display device having colored layer containing polyazo compound
    Patent number: 4729637
    Abstract: A liquid crystal display device having a pair of opposing substrates, conductive films provided on the substrates, and a liquid crystal filled between the opposing substrates. The device has a colored layer containing a polyazo compound and provided on at least one of the substrates.
    Type: Grant
    Filed: December 1, 1986
    Date of Patent: March 8, 1988
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasufumi Sato, Yoshiyuki Nakura