Patents by Inventor Fredric N. Cramer

Fredric N. Cramer 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).

  • Diffusion transfer photosensitive film unit for silver transfer image
    Patent number: 5858608
    Abstract: There are described diffusion transfer photosensitive film units which include a novel antihalation layer comprising an antihalation material, titanium dioxide and a binder. Diffusion transfer film units prepared according to the invention provide silver images of enhanced resolution, film speed and sharpness.
    Type: Grant
    Filed: October 16, 1997
    Date of Patent: January 12, 1999
    Assignee: Polaroid Corporation
    Inventors: Barry B. Corden, Fredric N. Cramer, Paul E. Nangeroni