Patents by Inventor Stuart A. Mucklejohn

Stuart A. Mucklejohn 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).

  • A PLASMA LIGHT SOURCE WITH LOW METAL HALIDE DOSE
    Publication number: 20210257206
    Abstract: A low-dose, preferably unsaturated, fill of microwave excitable material (9), including at least two metal halides in a noble gas with an optional mercury buffer, is contained in a plasma crucible (2) to form a light emitting plasma therein.
    Type: Application
    Filed: June 7, 2019
    Publication date: August 19, 2021
    Inventors: Stuart MUCKLEJOHN, Barry PRESTON
  • Ceramic arc tube and end plugs therefor and methods of making the same
    Publication number: 20070035250
    Abstract: A one piece end plug (120, 124) for use in a three part ceramic arc tube comprises a cylindrical head portion of a diameter suitable for insertion into a cylindrical body portion and a circular leg portion formed on the head portion so as to be coaxial therewith and tapering inwardly from the head portion outwards, the whole having a through aperture for receipt of electrodes and being formed of single ceramic pressing.
    Type: Application
    Filed: August 4, 2006
    Publication date: February 15, 2007
    Inventors: Stuart Mucklejohn, Andrew Davies, Ishmail Laher, Keith Parker
  • Ceramic metal halide lamps
    Publication number: 20060290286
    Abstract: A ceramic metal halide discharge lamp has a halide dosage weight to mercury weight of between 0.40 to 0.77.
    Type: Application
    Filed: August 17, 2005
    Publication date: December 28, 2006
    Inventors: Stuart Mucklejohn, Zoltan Koltai
  • Ceramic metal halide lamp
    Patent number: 6731068
    Abstract: A metal halide lamp comprised of a ceramic discharge chamber containing an ionizable fill, said fill comprising Hg, and halides (H) of Na, TI, an alkaline earth metal, and 0>rare earth element (Re)<15 as a molar fraction.
    Type: Grant
    Filed: December 3, 2001
    Date of Patent: May 4, 2004
    Assignee: General Electric Company
    Inventors: James T. Dakin, James A. Leonard, Stuart A. Mucklejohn, Gergely Ormandlaky
  • Ceramic metal halide lamp
    Publication number: 20030102808
    Abstract: A metal halide lamp comprised of a ceramic discharge chamber containing an ionizable fill, said fill comprising Hg, and halides (H) of Na, TI, an alkaline earth metal, and 0>rare earth element (Re)<15 as a molar fraction.
    Type: Application
    Filed: December 3, 2001
    Publication date: June 5, 2003
    Applicant: GENERAL ELECTRIC COMPANY
    Inventors: James T. Dakin, James A. Leonard, Stuart A. Mucklejohn, Gergely Ormandlaky
  • Electrodeless discharge lamp
    Patent number: 6097137
    Abstract: An electrodeless discharge lamp comprises a sealed discharge vessel containing a fill capable of sustaining a discharge when suitably energized, and circuitry for energizing a solenoid to produce an RF electromagnetic field in the vessel to energize the fill. A light transmissive, inherently conductive, polymer layer is provided on the exterior of the discharge vessel for confining the RF field within the lamp. An outer, insulating layer may also be provided over the conductive layer.
    Type: Grant
    Filed: February 12, 1997
    Date of Patent: August 1, 2000
    Assignee: General Electric Company
    Inventors: Graham M. Forsdyke, Stuart A. Mucklejohn, Mahamed H. Girach
  • Controlling the transmission of light from light sources
    Patent number: 5994840
    Abstract: The envelope (6) of a light source is at least partly coated with electrochromic material (20), sandwiched between two conductive layers (21,22). A voltage applied to the electrochromic material by way of the conductive layers varies the intensity and/or color of the light from the source.
    Type: Grant
    Filed: February 12, 1997
    Date of Patent: November 30, 1999
    Assignee: General Electric Company
    Inventors: Graham M. Forsdyke, Stuart A. Mucklejohn
  • Discharge tube arrangement
    Patent number: 5086258
    Abstract: An electrodeless discharge tube containing a fill which comprises a metal carbonyl complex. Such a complex will be sufficiently volatile to produce a vapor pressure in a discharge tube in which a discharge can be generated. The discharge so generated emits a mixture of visible and infra-red radiation.
    Type: Grant
    Filed: October 4, 1990
    Date of Patent: February 4, 1992
    Assignee: Thorn EMI plc
    Inventors: Stuart A. Mucklejohn, David O. Wharmby