Patents by Inventor Donald W. Preissler

Donald W. Preissler 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).

  • Self developing-film unit
    Patent number: 6221554
    Abstract: There is described a self-developing film unit which has a photosensitive member and an image-receiving member and wherein one outermost surface of the film unit comprises a support layer carrying a layer of a releasable material and a layer of an adhesive material. After an image is formed in the film unit by photoexposure of the photosensitive element and photographic processing of the exposed photosensitive element, the support and releasable material layer can be removed and the film unit or the image-receiving element, as the case may be, adhered to a surface for viewing of the image.
    Type: Grant
    Filed: January 6, 2000
    Date of Patent: April 24, 2001
    Assignee: Polaroid Corporation
    Inventors: Philip R. Norris, Harry R. Parsons, William T. Plummer, Donald W. Preissler, Robert J. Wadja