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:
Mar. 26, 1991
Filed:
Aug. 24, 1990
Applicant:
Inventors:
James Morris, Wakefield, MA (US);
Zeya K Krasko, Danvers, MA (US);
William M Keeffe, Rockport, MA (US);
Assignee:
GTE Products Corporation, Danvers, MA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
313 25 ; 313112 ;
Abstract
An improved metal halide discharge lamp is provided. The improved metal halide includes an arc tube having a pair of electrodes and containing a fill including an inert starting gas, mercury, and metal halides; and an outer envelope enclosing the arc tube. The entire outer surface of the arc tube is coated with a heat reflective material to improve lamp efficiency.