Patents by Inventor Clarence F. St. Jacques

Clarence F. St. Jacques 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).

  • Printing plate and methods of making and using same
    Patent number: 5407764
    Abstract: A lithographic printing plate for use on a printing press, with minimal or no additional processing after photoexposure, comprises a printing plate substrate; a photosensitive hydrophilic layer having a polymeric hydrophilic binder and a photopolymerizable, photocrosslinkable or photorearrangeable compound capable of promoting insolubilization or hardening in areas of photoexposure; and a photosensitive hydrophobic layer having a polymeric hydrophobic binder and a photopolymerizable, photocrosslinkable or photorearrangeable compound capable of promoting insolubilization or hardening in areas of photoexposure.
    Type: Grant
    Filed: August 6, 1993
    Date of Patent: April 18, 1995
    Assignee: Polaroid Corporation
    Inventors: Zafarullah K. Cheema, Anthony C. Giudice, Eugene L. Langlais, Clarence F. St. Jacques
  • Printing plate and methods of making and use same
    Patent number: 5258263
    Abstract: A lithographic printing plate for use on a printing press, with minimal or no additional processing after photoexposure, comprises a printing plate substrate; a photosensitive hydrophilic layer having a polymeric hydrophilic binder and a photopolymerizable, photocrosslinkable or photorearrangeable compound capable of promoting insolubilization or hardening in areas of photoexposure; and a photosensitive hydrophobic layer having a polymeric hydrophobic binder and a photopolymerizable, photocrosslinkable or photorearrangeable compound capable of promoting insolubilization or hardening in areas of photoexposure.
    Type: Grant
    Filed: September 10, 1991
    Date of Patent: November 2, 1993
    Assignee: Polaroid Corporation
    Inventors: Zafarullah K. Cheema, Anthony C. Giudice, Eugene L. Langlais, Clarence F. St. Jacques