Patents by Inventor David Martlew

David Martlew 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
  • Glass coating apparatus
    Patent number: 4995340
    Abstract: An apparatus for coating flat glass by directing a reactant gas over the glass surface incorporates a gas flow restrictor which comprises a chamber which is adapted to receive a supply of reactant gas and is adapted to output a flow of the reactant gas over the flat glass being coated. A series of at least two restrictions is provided in the gas flow restrictor, each restriction comprising a plate member extending across the chamber and having a plurality of apertures therethrough.
    Type: Grant
    Filed: October 12, 1989
    Date of Patent: February 26, 1991
    Assignee: Pilkington PLC
    Inventors: David Martlew, Malcom J. Rigby