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:
Jun. 11, 1991
Filed:
Jan. 29, 1990
Applicant:
Inventor:
John W Shaffer, Danvers, MA (US);
Assignee:
GTE Products Corporation, Danvers, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
445-6 ;
Abstract
A method is provided for constructing an electric lamp such as, for example, a tungsten halogen capsule, using carbon monoxide as a reducing gas to remove oxides from lamp components during the manufacture thereof. To this end, prior to evacuation the lamp envelope is filled with a forming gas such as, for example, a carbon monoxide- nitrogen mixture, and the envelope is given one or more light-ups to thereby deoxidize the lamp components.