Patents by Inventor Charles R. Kuykendall

Charles R. Kuykendall 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).

  • Breakaway timber support poles
    Patent number: 4432172
    Abstract: Timber support poles are given desired breaking properties to reduce the deceleration of a vehicle that collides with the pole by cutting one or more recesses in the pole, and filling the recesses with a polymeric filler composition.
    Type: Grant
    Filed: January 11, 1982
    Date of Patent: February 21, 1984
    Assignee: Minnesota Mining & Manufacturing Company
    Inventors: Charles R. Kuykendall, Richard B. Castle