Patents by Inventor Takashi Kozawaguchi

Takashi Kozawaguchi 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).

  • Spatial light modulator and spatial light modulating apparatus with alignment film having particular conductance
    Patent number: 5130830
    Abstract: A spatial light modulator has a photoconductive layer deposited on one glass substrate having a transparent electrode. A first liquid crystal alignment film is formed on the photoconductive layer. A second liquid crystal alignment film is formed on another glass substrate having another transparent electrode. A ferroelectric liquid crystal is filled between the first and second liquid crystal alignment films.
    Type: Grant
    Filed: February 26, 1990
    Date of Patent: July 14, 1992
    Assignee: Nippon Telegraph and Telephone Corporation
    Inventors: Seiji Fukushima, Takashi Kurokawa, Takashi Kozawaguchi, Shinji Matsuo