Patents by Inventor H. Vora Rohitkumar

H. Vora Rohitkumar 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).

  • Colorless films formed from fluorinated polyimides
    Patent number: 5049649
    Abstract: A colorless, optically clear film consisting essentially of a polyimide of the formula: ##STR1## wherein R is ##STR2## is disclosed. The composition forming the film has a weight average molecular weight, M.sub.w of at least 75,000, and has as an essential characteristic at least about 80% optical transmission at electromagnetic wavelengths of 400 nanometers and above when formed into a thickness of about two thousandths of an inch.
    Type: Grant
    Filed: December 27, 1989
    Date of Patent: September 17, 1991
    Assignee: Hoechst Celanese Corp.
    Inventor: H. Vora Rohitkumar