Patents by Inventor Robert J. Verbiar

Robert J. Verbiar 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).

  • Exposure unit and method for exposing photosensitive materials
    Patent number: 5386268
    Abstract: An exposure unit and method for imaging a photosensitive material includes a source of radiation for exposing the photosensitive material to actinic radiation such that the radiation strikes the photosensitive material at a plurality of angles of incidence, and apparatus for moving the radiation source relative to and in a plane parallel to the photosensitive material. The exposure unit also has a reflector for controlling (1) the proportion of (a) radiation having perpendicular angles of incidence to (b) radiation having non-perpendicular angles of incidence, such that the radiation having non-perpendicular angles is increased, and (2) the distribution of non-perpendicular angles of incidence.
    Type: Grant
    Filed: July 26, 1993
    Date of Patent: January 31, 1995
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Albert H. Ohlig, Steven W. Nelson, Robert J. Verbiar, Stephen Cushner
  • Process for dimensionally stabilizing photopolymer flexographic printing plates
    Patent number: 5085976
    Abstract: A process for substantially improving dimensional stability in photopolymeric flexographic relief printing plates wherein the surface of the printing plate is post-exposed to a high intensity radiation source having broad wavelength emission in the 200 to 700 nm range.
    Type: Grant
    Filed: June 11, 1990
    Date of Patent: February 4, 1992
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Joseph W. Gibson, Jr., Anthony J. Bart, Robert J. Verbiar, S. Andries R. D. Sebastian