Patents by Inventor Graham Malcolm Forsdyke

Graham Malcolm Forsdyke 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).

  • Amalgam for use in fluorescent lamps comprising lead, tin, mercury together with another of the group silver, magnesium, copper, nickel, gold and platinum.
    Patent number: 5952780
    Abstract: An amalgam for a fluorescent lamp. The amalgam includes mercury, tin, lead, and another metal selected from the group consisting of silver, magnesium, copper, gold, platinum, and nickel.
    Type: Grant
    Filed: September 25, 1997
    Date of Patent: September 14, 1999
    Assignee: General Electric Company
    Inventors: Graham Malcolm Forsdyke, Stuart Albert Mucklejohn, Alan Thomas Dinsdale
  • Amalgam Positioning in an electrodeless fluorescent lamp
    Patent number: 5789855
    Abstract: An electrodeless fluorescent reflector lamp has a discharge vessel containing a fill, a solenoid in a reentrant and indium on the inner wall of the vessel acting as a primary amalgam. A secondary amalgam of indium may be provided on the reentrant.The primary amalgam is preferably under an insulative skirt. The vessel has a light reflective coating on the inner wall under the skirt.The exhaust tube is tipped off at the proximal end of the reentrant or is omitted, the vessel being tipped off at the distal end of the reentrant.
    Type: Grant
    Filed: October 17, 1996
    Date of Patent: August 4, 1998
    Assignee: General Electric Company
    Inventors: Graham Malcolm Forsdyke, Joseph Darryl Michael, Steven John Everest, Joseph Christopher Borowiec, Zoltan Toth