Patents by Inventor Stephen M. Buchan

Stephen M. Buchan 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).

  • Valve assembly
    Patent number: 5564470
    Abstract: A valve assembly comprising a valve body, an obturator rotatably mounted in the body and a transducer connected to or located adjacent the obturator in order to determine the position thereof.The transducer may comprise e.g. a potentiometer or a Hall effect device.
    Type: Grant
    Filed: July 26, 1994
    Date of Patent: October 15, 1996
    Assignee: BTR plc
    Inventors: Martin W. Denmark, Stephen M. Buchan