Patents by Inventor George Eric Coxon

George Eric Coxon 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).

  • Ceramic arc tube by annealing
    Patent number: 6796869
    Abstract: A process for making an arc tube comprises the steps of sintering an arc tube composition to form the arc tube; annealing the arc tube in a vacuum; and sealing the arc tube with at least one electrode. Preferably, the arc tube annealed according to the present process is a ceramic arc tube. The annealing of the arc tubes in a vacuum preferably occurs at a temperature of between about 1000° C. and 1500° C.
    Type: Grant
    Filed: December 28, 2000
    Date of Patent: September 28, 2004
    Assignee: General Electric Company
    Inventors: George Eric Coxon, Charles D. Greskovich, James Anthony Brewer, Curtis E. Scott
  • Arctube for high pressure discharge lamp
    Patent number: 5866982
    Abstract: A high pressure discharge lamp utilizing an improved ceramic arctube. The arctube has a ceramic central portion, a first ceramic leg extending from one end of the central portion and in some embodiments a second ceramic leg extending from the other end of the central portion. The arctube has reinforcing means where one or both of the legs joins the central portion to reinforce and strengthen the connection between each leg and the central portion. The reinforcing means is preferably seal glass or a layer of seal glass adjacent a ceramic ring.
    Type: Grant
    Filed: January 29, 1996
    Date of Patent: February 2, 1999
    Assignee: General Electric Company
    Inventors: Curtis E. Scott, Charles D. Greskovich, Mark E. Duffy, George Eric Coxon