Patents by Inventor Zachary D. Walters

Zachary D. Walters 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).

  • Oxidation resistant natural rubber and a method for its production
    Patent number: 11053326
    Abstract: A method for stabilizing a natural rubber such as guayule. The method includes the step of introducing at least one of an Extraction Curves for Guayule Rubber Samples amine and a phenolic anti-oxidant, such as MADA, to a latex form of the rubber under conditions such that the anti-oxidant becomes chemically bound to the rubber. The method includes the further step of subsequently treating the rubber to remove at least a substantial portion of entrained resins. The method can yield a rubber composition of, for example, guayule rubber and including an anti-oxidant chemically bound thereto. The resultant rubber can be suitable for use in tire construction.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: July 6, 2021
    Assignee: Cooper Tire and Rubber Company
    Inventors: Howard A. Colvin, Zachary D. Walters
  • OXIDATION RESISTANT NATURAL RUBBER AND A METHOD FOR ITS PRODUCTION
    Publication number: 20170247477
    Abstract: A method for stabilizing a natural rubber such as guayule. The method includes the step of introducing at least one of an Extraction Curves for Guayule Rubber Samples amine and a phenolic anti-oxidant, such as MADA, to a latex form of the rubber under conditions such that the anti-oxidant becomes chemically bound to the rubber. The method includes the further step of subsequently treating the rubber to remove at least a substantial portion of entrained resins. The method can yield a rubber composition of, for example, guayule rubber and including an anti-oxidant chemically bound thereto. The resultant rubber can be suitable for use in tire construction.
    Type: Application
    Filed: September 10, 2015
    Publication date: August 31, 2017
    Inventors: Howard A. Colvin, Zachary D. Walters