Patents by Inventor Tatsuya Tabei

Tatsuya Tabei 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).

  • Polymer dispersion-type liquid crystal optical device and method for producing the same
    Patent number: 6108062
    Abstract: A liquid crystal optical device including a liquid crystal/polymer composite film including of a matrix polymer composed mainly of a transparent resin having an ionic dissociative group and, dispersed therein, a liquid crystal particle; and conductive substrates sandwiching the liquid crystal/polymer composite film therebetween, at least one of the conductive substrates being transparent.
    Type: Grant
    Filed: January 27, 1998
    Date of Patent: August 22, 2000
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Satoshi Takeuchi, Masayuki Ando, Tatsuya Tabei, Tadafumi Shindo, Hiroki Maeda, Hideshi Hattori, Kei Ikegami
  • Polymer dispersion-type liquid crystal optical device and method for producing the same
    Patent number: 5843332
    Abstract: A liquid crystal optical device including: a liquid crystal/polymer composite film including matrix polymer composed mainly of a transparent resin having an ionic dissociative group and, dispersed therein, a liquid crystal particle; and conductive substrates sandwiching the liquid crystal/polymer composite film therebetween, at least one of the conductive substrates being transparent.
    Type: Grant
    Filed: November 15, 1994
    Date of Patent: December 1, 1998
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Satoshi Takeuchi, Masayuki Ando, Tatsuya Tabei, Tadafumi Shindo, Hiroki Maeda, Hideshi Hattori, Kei Ikegami
  • Method of making a polymer dispersed liquid crystal by electrodeposition
    Patent number: 5479278
    Abstract: A liquid crystal optical device including a liquid crystal/polymer composite film including a matrix polymer composed mainly of a transparent resin having an ionic dissociative group and, dispersed therein, a liquid crystal particle; and conductive substrates sandwiching the liquid crystal/polymer composite film therebetween, at least one of the conductive substrates being transparent.
    Type: Grant
    Filed: October 16, 1992
    Date of Patent: December 26, 1995
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Satoshi Takeuchi, Masayuki Ando, Tatsuya Tabei, Tadafumi Shindo, Hiroki Maeda