Patents by Inventor Barclay Mitchell

Barclay Mitchell 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).

  • Gaskets
    Patent number: 4499135
    Abstract: A paper-based gasket is impregnated with a silicone resin to improve resistance to water/antifreeze mixtures. The gasket is made from paper essentially free from amine-containing material such as wetting agent and is bonded with a sulphur-free or sulphur donor free rubber binder.
    Type: Grant
    Filed: December 6, 1982
    Date of Patent: February 12, 1985
    Assignee: Payez International Limited
    Inventors: Barclay Mitchell, Kenneth Moore