Patents by Inventor Andrew Barker

Andrew Barker 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).

  • Porous PTFE structures
    Patent number: 5677031
    Abstract: A porous polytetrafluoroethylene (PTFE) structure particularly for use as a liquid filter comprises particles of granular-type PTFE fused together to form a porous integral network. The structure is formed by spraying an aqueous suspension of granular PTFE particles and baking at a temperature of 335.degree.-350.degree. C. Typically the specific gravity is 0.8 to 1.54. The crystallinity is less than 95%. The structure may be supported on a perforate substrate such as stainless steel mesh.
    Type: Grant
    Filed: May 2, 1995
    Date of Patent: October 14, 1997
    Assignee: W. L. Gore & Associates, Inc.
    Inventors: Andrew Miller Allan, Brian Andrew Barker