Patents by Inventor John B. Armitage

John B. Armitage 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).

  • Polyethylene copolymers
    Patent number: 4351931
    Abstract: High molecular weight uniformly random copolymers of ethylene and acrylic or methacrylic acid containing up to 10 weight percent of the acid.
    Type: Grant
    Filed: July 19, 1971
    Date of Patent: September 28, 1982
    Assignee: E. I. Du Pont de Nemours and Company
    Inventor: John B. Armitage