Patents by Inventor John P. DeVido

John P. DeVido 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).

  • Thermally stable nitrocellulose emulsions, solutions and coatings
    Patent number: 5254161
    Abstract: Emulsions, solutions and coatings comprising nitrocellulose are stabilized against yellowing on thermal aging when treated with boric acid or borax or hydrogen peroxide or 0.1 to 0.5% by weight of a chlorinated hydantoin such as 1,3-dichloro 5,5-dimethylhydantoin (DCH). Boric acid or borax may be added as aqueous solutions during nitrocellulose manufacture. Combined treatments and/or additions of boric acid and DCH give optimum stabilization against yellowing.
    Type: Grant
    Filed: October 24, 1991
    Date of Patent: October 19, 1993
    Assignee: Aqualon Company
    Inventors: John P. DeVido, Ernest C. Linsay, Daniel M. Zavisza