Patents by Inventor James Albert Barker

James Albert Barker 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).

  • Coated synthetic film materials
    Patent number: 4009037
    Abstract: Improving the adhesion of a gelatin coating to a styrene homopolymer or copolymer film by solvent treating and corona discharge treating the film prior to coating with a gelatin layer in the production of a coated photobase.
    Type: Grant
    Filed: January 21, 1974
    Date of Patent: February 22, 1977
    Assignee: Imperial Chemical Industries Limited
    Inventors: David Roderick Mann, James Albert Barker