Patents by Inventor Charles E. Singleton

Charles E. Singleton 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).

  • Polytetrafluoroethylene molding powder
    Patent number: 5646192
    Abstract: In this invention a new form of polytetrafluoroethylene has been found to be compression moldable to provide exceptionally strong molded articles. It is also useful as an additive or strength binder. The new form is a compression molding powder comprised of comminuted, sheared particles of expanded porous polytetrafluoroethylene, said particles having a nudular-microfibrilar structure of irregular shape, and a mean particle size between 5 and 500 micrometers. By irregular shape is meant that the nodes and fibrils do not have an ordered arrangement. The bulk density is about 0.06 to 0.2 g/cc.
    Type: Grant
    Filed: October 12, 1994
    Date of Patent: July 8, 1997
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: John W. Dolan, Charles E. Singleton