Patents by Inventor James Richard Wolfe, Jr.

James Richard Wolfe, Jr. 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).

  • Copolymerizable phenolic antioxidant
    Patent number: 4094857
    Abstract: An antioxidant useful for stabilizing polyesters having the formula ##STR1## where R.sub.1 is hydrogen or a lower alkyl radical; R.sub.2 is a monovalent radical containing carbon, hydrogen, and oxygen, free of ethylenic or acetylenic unsaturation, and having a molecular weight between about 99-300 and, further, containing two carboxyl groups or their ester forming equivalents; R.sub.3 and R.sub.4 are tertiary alkyl radicals each containing not more than 8 carbon atoms; and x is an integer of from 0-4.
    Type: Grant
    Filed: September 1, 1977
    Date of Patent: June 13, 1978
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: James Richard Wolfe, Jr.