Patents by Inventor George S. Li

George S. Li 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).

  • Polymerizates of olefinic nitriles and diene rubbers
    Patent number: 3947527
    Abstract: Polymeric compositions having good impact resistance, low permeability to gases, and high-softening temperatures which are composed of a conjugated diene monomer, such as butadiene, an olefinically unsaturated nitrile, such as acrylonitrile, and indene are described.
    Type: Grant
    Filed: February 21, 1975
    Date of Patent: March 30, 1976
    Assignee: The Standard Oil Company
    Inventors: George S. Li, Gerald P. Coffey