Patents by Inventor James Dakin

James Dakin 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).

  • High pressure alkali metal discharge lamp
    Publication number: 20070085478
    Abstract: A high pressure alkaline metal discharge lamp includes a ceramic arctube and a discharge-sustaining fill. The fill contains rare gas and alkali metal, the alkali metal being cesium, rubidium, potassium or mixtures thereof. The fill is mercury free and cadmium free. The alkali metal vapor pressure during operation is at least 2 atmospheres.
    Type: Application
    Filed: October 13, 2005
    Publication date: April 19, 2007
    Inventors: James Dakin, Jack Strok
  • Ceramic metal halide lamp with optimal shape
    Publication number: 20060119274
    Abstract: A metal halide lamp (10) has a ceramic arctube (12) with an inside length L, an inside diameter D, and an aspect ratio L/D of between about 1.5 and about 2.0 containing a suitable fill. The lamp may have a power rating of 200 W or more and can be used with an existing ballast.
    Type: Application
    Filed: January 19, 2006
    Publication date: June 8, 2006
    Inventors: James Dakin, Matthew Bugenske, Gary Utterback
  • Ceramic metal halide lamp with optimal shape
    Publication number: 20050194908
    Abstract: A metal halide lamp (10) has a ceramic arctube (12) with an inside length L, an inside diameter D, and an aspect ratio L/D of between about 1.5 and about 2.0 containing a suitable fill. The lamp may have a power rating of 200 W or more and can be used with an existing ballast.
    Type: Application
    Filed: March 4, 2004
    Publication date: September 8, 2005
    Applicant: General Electric Company
    Inventors: James Dakin, Matthew Bugenske, Gary Utterback