Patents by Inventor Carl A. Aufdermarsh, Jr.

Carl A. Aufdermarsh, 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).

  • Perfluoroelastomer blends
    Patent number: 4413094
    Abstract: Co-vulcanizable fluoroelastomer blends of tetrafluoroethylene/perfluoro-(methylvinyl-ether)/cure-site monomer terpolymer and hexafluoropropylene oxide/cure-site monomer dipolymer.
    Type: Grant
    Filed: September 29, 1982
    Date of Patent: November 1, 1983
    Assignee: E. I. Du Pont de Nemours & Co.
    Inventor: Carl A. Aufdermarsh, Jr.
  • Stabilized fluoroelastomer compositions
    Patent number: 4316836
    Abstract: Vulcanizates of certain fluoroelastomer terpolymer compositions, wherein the terpolymer is derived from tetrafluoroethylene, perfluoro(methyl vinyl ether), and a cure-site monomer, and further wherein the composition contains non-black filler, exhibit significantly improved stability upon heat aging when small quantities of quinacridone-type pigments are incorporated therein.
    Type: Grant
    Filed: April 23, 1980
    Date of Patent: February 23, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: Carl A. Aufdermarsh, Jr.