Patents by Inventor Jules R. Berendsen

Jules R. Berendsen 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).

  • Method and material for the production of continuous tone silver images by the silver complex diffusion transfer reversal process
    Patent number: 4686174
    Abstract: A photographic material for the production of continuous tone silver images by the diffusion transfer reversal process using at least two independently prepared silver halide emulsions of different photo-sensitivity and having a silver halide composition as defined in the description, either in admixture in a single supported emulsion layer or coated on the same support as separate superposed emulsion layers.
    Type: Grant
    Filed: January 7, 1986
    Date of Patent: August 11, 1987
    Assignee: Agfa-Gevaert N.V.
    Inventors: Rene M. De Keyzer, Jos A. Vaes, Jules R. Berendsen