Patents by Inventor David R. Kress

David R. Kress 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 of preparing printing surface formed of polymeric resin containing polyamide and dicarboxylic acid diester
    Patent number: 4446222
    Abstract: A photopolymerizable composition of matter useful for photopolymeric printing surfaces is disclosed. Printing surfaces prepared from the composition are strong and wear well, resist solvents and abrasives, and are suitable for intaglio or gravure printing.
    Type: Grant
    Filed: June 21, 1982
    Date of Patent: May 1, 1984
    Assignee: Matrix Unlimited, Inc.
    Inventor: David R. Kress
  • Process of recovering unpolymerized photopolymer from printing plates
    Patent number: 4345022
    Abstract: A photopolymerizable composition of matter useful for photopolymeric printing surfaces is disclosed. Printing surfaces prepared from the composition are strong and wear well, resist solvents and abrasives, and are suitable for intaglio or gravure printing.
    Type: Grant
    Filed: March 30, 1981
    Date of Patent: August 17, 1982
    Assignee: Matrix Unlimited, Inc.
    Inventor: David R. Kress
  • Photopolymeric composition containing polyamide and dicarboxylic acid diester
    Patent number: 4269930
    Abstract: A photopolymerizable composition of matter useful for photopolymeric printing surfaces is disclosed. Printing surfaces prepared from the composition are strong and wear well, resist solvents and abrasives, and are suitable for intaglio or gravure printing.
    Type: Grant
    Filed: November 13, 1979
    Date of Patent: May 26, 1981
    Assignee: Matrix Unlimited, Inc.
    Inventor: David R. Kress
  • Method of hardening photopolymeric printing material using warm air
    Patent number: 4264712
    Abstract: Photopolymeric printing plates that have been imaged and etched are hardened by drying to remove surface moisture and are slowly and evenly heated while circulating warm air over the plate to prevent hot spots and remove vaporized material. Letter press type plates are heated up to 120.degree. C. to 150.degree. C., and intaglio type plates are heated to 200.degree. C. to 220.degree. C. Intaglio plates are also preferably coated with a thin layer of a fluorotelomer material before the heating is completed.
    Type: Grant
    Filed: September 26, 1979
    Date of Patent: April 28, 1981
    Assignee: Matrix Unlimited, Inc.
    Inventor: David R. Kress