Patents by Inventor Stuart D. Nielsen

Stuart D. Nielsen 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).

  • Metalation of polymers
    Patent number: 3978161
    Abstract: Hydrocarbon polymers are readily metalated in solution in a hydrocarbon solvent with metallic sodium, potassium, rubidium and/or cesium utilizing a chelating polytertiary amine or a crown polyether.
    Type: Grant
    Filed: July 29, 1975
    Date of Patent: August 31, 1976
    Assignee: The General Tire & Rubber Company
    Inventors: Stuart D. Nielsen, Ivan G. Hargis, Russell A. Livigni