Patents by Inventor Richard F. Barrows

Richard F. Barrows 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).

  • Low pressure check valve
    Patent number: 7137405
    Abstract: A check valve for preventing backflow of media including a valve movably coupled to a carrier body, the valve including a flexible membrane disposed therein such that the flexible membrane flexibly engages an aperture in the carrier body to prevent backflow of media through the aperture.
    Type: Grant
    Filed: May 5, 2004
    Date of Patent: November 21, 2006
    Assignee: SEH America, Inc.
    Inventors: Richard F. Barrows, Mike Hamilton