Patents by Inventor Tohru Ohode

Tohru Ohode 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: 5436037
    Abstract: A liquid crystal orientation controlling membrane, characterized by the polyimide membrane comprising the repeating unit represented by the formula: ##STR1## wherein Ar.sub.1 represents a diamine moiety which is selected from the group consisting of ##STR2## Ar.sub.2 represents tetravalent carboxylic acid moiety which is selected from the group consisting of ##STR3## Another invention is a ferroelectric liquid crystal element or an antiferroelectric liquid crystal element using the polyimide orientation controlling membrane mentioned above. The present liquid crystal element is used to a large picture display with high resolution, a TV picture display with wide viewing angle and a liquid crystal optical shutter.
    Type: Grant
    Filed: September 16, 1992
    Date of Patent: July 25, 1995
    Assignee: Showa Shell Sekiyu Kabushiki Kaisha
    Inventors: Nobuhiro Okabe, Yuvraj S. Negi, Ichiro Kawamura, Tohru Ohode, Norio Yamamoto, Yuichiro Yamada