Patents by Inventor Joseph DeGiovanni

Joseph DeGiovanni 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).

  • Process for casting tire tread impressions using a photopolymerizable composition as the casting material
    Patent number: 4970033
    Abstract: Disclosed is an improved process for casting the impression of a tire tread by preparing a negative mold of the tire tread and making a positive cast from the negative mold. The improvement consists of pouring a liquid photopolymerizable composition into the negative mold of the tire tread, applying a vacuum, exposing the composition to ultraviolet radiation to cross-link the polymer, removing the positive cast from the negative mold, and exposing the cast to additional ultraviolet radiation in the absence of oxygen to harden the surface of the cast.
    Type: Grant
    Filed: August 7, 1989
    Date of Patent: November 13, 1990
    Assignee: Hercules Incorporated
    Inventors: Joseph DeGiovanni, Richard B. Schroeder