Patents by Inventor Robert B. Knill

Robert B. Knill 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).

  • Pneumatic tire having axially varying tread composition
    Patent number: 4319620
    Abstract: A pneumatic tire having a sulfur-cured rubber tread comprised of an axially central tread portion positioned between two tread portions of about equal size, said tread portions required to be of particular rubber compositions and physical characteristics.
    Type: Grant
    Filed: September 19, 1980
    Date of Patent: March 16, 1982
    Assignee: The Goodyear Tire & Rubber Company
    Inventor: Robert B. Knill