Patents by Inventor Hisao Takada

Hisao Takada 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).

  • Patent number: 3936815
    Abstract: A matrix-addressed liquid crystal display device including a matrix-addressed display section is provided. The display section comprises a pair of optically transparent plates each of which having on one surface a plurality of parallel strip electrodes optically transparent and deposited through an optically transparent spacer, said pair of plates being parallelly arranged so that the electrodes will be inside and mutually intersect at right angles so as to form row and column electrode groups of a matrix, and a cholesteric phase liquid crystal filled between the respective plates, which liquid crystal being such that when a voltage applied to the electrodes is above a threshold level the molecular axes of the liquid crystal are aligned in the direction of electric field due to the voltage applied.
    Type: Grant
    Filed: July 29, 1974
    Date of Patent: February 3, 1976
    Assignee: Nippon Telegraph and Telephone Public Corporation
    Inventors: Osamu Kogure, Hisao Takada, Yoshinori Kato, Masao Kawachi