Patents by Inventor Peter James Whitfield

Peter James Whitfield 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).

  • Float glass production
    Patent number: 5862169
    Abstract: A float glass production facility comprising a furnace including a melter, a refiner and a working end, the working end having two or more exits, each of which supplies a separate canal and float glass forming chamber, the working end being operable so that the glass flow through each of the two or more exits is independent of the flow of glass through the other exits.
    Type: Grant
    Filed: August 4, 1997
    Date of Patent: January 19, 1999
    Assignee: Pilkington PLC
    Inventors: David Martlew, Robert Emmett Trevelyan, Graham Unwin, Peter James Whitfield
  • Method and apparatus for making glass
    Patent number: 5827341
    Abstract: A method and apparatus for making float glass, wherein the glass is stirred in the conditioning zone adjacent the entrance to the float canal so as to attenuate the glass across the entire width of the float canal.
    Type: Grant
    Filed: October 25, 1996
    Date of Patent: October 27, 1998
    Assignee: Pilkington plc
    Inventors: Peter James Whitfield, Robert Emmett Trevelyan, Andrew Michael Keeley, David Martlew