Patents by Inventor Ralph A. Annicelli

Ralph A. Annicelli 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).

  • 1,3,4-thiadiazole curing systems for chlorine containing polymers
    Patent number: 5391621
    Abstract: The present invention provides an improved curing system for chlorinated polymers and blends thereof with more highly unsaturated eleastomers, using an organopolysulfide derivative of 2,5-dimercapto-l,3,4-thiadiazole as a curing agent.
    Type: Grant
    Filed: October 15, 1993
    Date of Patent: February 21, 1995
    Assignee: R. T. Vanderbilt Company, Inc.
    Inventors: Robert F. Ohm, David M. Hoffman, Ralph A. Annicelli