Patents by Inventor Masanobu Wada, deceased

Masanobu Wada, deceased 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).

  • Multilayer guest host liquid crystal display without polarizers
    Patent number: 4556286
    Abstract: A guest-host type liquid crystal display device not requiring the use of external polarizers, comprises: at least two guest-host type liquid crystal cells which are superimposed one upon another, two of which are constructed in a manner that the liquid crystal molecules contained in these two cells and located close to the boundary between the two cells are aligned in a direction parallel to the plane of the boundary, but that the direction of alignment of the molecules in one of these two cells is perpendicular to that in the other cell when a voltage is applied to both cells, or alternatively when no voltage is applied to both cells, or alternatively when a voltage is applied to only one of these two cells.
    Type: Grant
    Filed: January 3, 1983
    Date of Patent: December 3, 1985
    Assignee: Stanley Electric Co., Ltd.
    Inventors: Tatsu Uchida, Toru Teshima, Masanobu Wada, deceased, Masami Wada, heir, Yuri Makuta, heiress