Patents by Inventor David Brian Telfer

David Brian Telfer 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).

  • Removal of cell growth from a body of water
    Patent number: 6743366
    Abstract: The invention provides a method of and apparatus for the removal of bacteria, microbes and other cell growth from a body of water by the application of an electromagnetic signal to a section of pipe communicable with the body of water.
    Type: Grant
    Filed: June 3, 2002
    Date of Patent: June 1, 2004
    Inventors: David Brian Telfer, Terence Edward Morris
  • Removal of cell growth from a body of water
    Publication number: 20020195395
    Abstract: The invention provides a method of and apparatus for the removal of bacteria, microbes and other cell growth from a body of water by the application of an electromagnetic signal to a section of pipe communicable with the body of water.
    Type: Application
    Filed: June 3, 2002
    Publication date: December 26, 2002
    Inventors: David Brian Telfer, Terence Edward Morris
  • Preventing contaminant build-up in beer lines
    Patent number: 5645697
    Abstract: Apparatus for preventing contaminant build-up in beer supply lines including a coil supported on a former located coaxially about the beer line. A signal generator is connected to the coil to apply a signal of varying frequency to the coil to prevent bacterial growth on the inside of the line.
    Type: Grant
    Filed: March 23, 1995
    Date of Patent: July 8, 1997
    Inventors: David Leslie Phillip Middleton, David Brian Telfer, Clive Barnes