Patents by Inventor John J. Sparapany

John J. Sparapany 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 manufacture preforms
    Patent number: 4758398
    Abstract: A method of preparing a plurality of thermoset resin preforms by extruding a rod, cooling the rod to retain its dimensional uniformity and to reduce further curing of the resin, forming a plurality of grooves in the rod, and fracturing the rod at the grooves to yield the preforms.
    Type: Grant
    Filed: October 7, 1986
    Date of Patent: July 19, 1988
    Assignee: The Dexter Corporation
    Inventors: John J. Sparapany, Lewis Erwin, Kevin J. Prey