Patents by Inventor B. J. Klein

B. J. Klein 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).

  • Determination of wet pressure sensitivity of a film
    Patent number: 5223359
    Abstract: Wet pressure sensitivity of a film having a silver halide coating is indirectly determined by measurement of a difference in density of a coating area which has increased pressure applied thereto compared to a coating area without such increased pressure.
    Type: Grant
    Filed: July 25, 1990
    Date of Patent: June 29, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Kenneth L. Shelton, B. J. Klein, James R. Woodroffe