Patents by Inventor Mark D. Franke

Mark D. Franke 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).

  • Process for preparation of a photographic element
    Patent number: 5443948
    Abstract: An improved process for manufacturing a spectrally sensitized photographic element comprising the combination of ultrafiltration of silver halide grains in combination with a supersensitizing additive consisting of ##STR1## wherein D.sup.+ is Na.sup.+, K.sup.+, Li.sup.+, NH4.sup.+ ; n is 1-5; m is 1-10.
    Type: Grant
    Filed: March 21, 1994
    Date of Patent: August 22, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Mark D. Franke, Richard J. Legg, Alden D. West, Anna E. Doyle
  • Bead edge guide for use in slide-bead coating
    Patent number: 5198030
    Abstract: An apparatus for controlling the bead edge in slide-bead coating is dislcosed employing bead edge guides in a gap between a coating lip and a moving substrate. The apparatus provides for improved coating quality and less material loss typically observed with increased line speeds.
    Type: Grant
    Filed: June 18, 1991
    Date of Patent: March 30, 1993
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Mark D. Franke