The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 28, 2004
Filed:
Dec. 28, 2000
Applicant:
Inventors:
George Eric Coxon, Liecestershire, GB;
Charles D. Greskovich, Schenectady, NY (US);
James Anthony Brewer, Scotia, NY (US);
Curtis E. Scott, Mentor, OH (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01L 9/24 ; C21D 1/00 ; C04B 3/500 ; C04B 3/564 ;
U.S. Cl.
CPC ...
H01L 9/24 ; C21D 1/00 ; C04B 3/500 ; C04B 3/564 ;
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.