Patents by Inventor Uhara Kenji

Uhara Kenji 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).

  • Reflector substrate for illumination device and reflector for illumination device
    Patent number: 6492031
    Abstract: A reflector substrate (1) adapted for use in illumination device (8) comprises an a molded aromatic polyimide film wherein the film has a glass transition temperature from 210 to 290° C. and said polyimide film has structural units of general formula (I) and (II): wherein R1 is selected from the group consisting of: wherein R2 is selected from the group consisting of: and said polyimide film has the molar ratio X:Y from 100:0 to 20:80.
    Type: Grant
    Filed: September 8, 2000
    Date of Patent: December 10, 2002
    Assignee: DuPont-Toray Co. Ltd.
    Inventors: Hideki Moriyama, Uhara Kenji, Hideaki Machida