Patents by Inventor William J. Link, deceased

William J. Link, deceased 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).

  • N-Alkylindolylidene and N-alkylbenzo-thiazolylidene alkanones as sensitizers for photopolymer compositions
    Patent number: 4454218
    Abstract: Photopolymerizable compositions comprising (a) at least one ethylenically unsaturated compound, (b) at least one photoinitiator or photoinitiator system, (c) sensitizing amount of an N-alkylindolylidene or N-alkylbenzothiazolylidene alkanone as defined, and optionally (d) at least one organic polymeric binder. The compositions, in layer form are useful in printing plates, litho films, photoresists, solder mask and for making image proofs. The products show sensitization to visible light.
    Type: Grant
    Filed: September 13, 1982
    Date of Patent: June 12, 1984
    Assignee: E. I. Du Pont de Nemours and Company
    Inventors: Thomas E. Dueber, William J. Link, deceased