Patents by Inventor Gunther Kiesslich

Gunther Kiesslich 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).

  • Photographic element with improved slip
    Patent number: 4042399
    Abstract: Photographic elements with surfaces having improved slip are produced by incorporating in a surface layer a polyester of the formula --O--CO--(CH.sub.2).sub.n --CO--O--R-- wherein n = 1-8 and R is selected from certain aliphatic or hydroaromatic groups.
    Type: Grant
    Filed: July 15, 1975
    Date of Patent: August 16, 1977
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Gunther Kiesslich