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. 14, 1999
Filed:
Aug. 28, 1998
Applicant:
Inventor:
Harald Ludwig Witting, Burnt Hills, NY (US);
Assignee:
General Electric Company, Schenectady, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313634 ; 313493 ; 313607 ; 313 44 ; 313 46 ; 313635 ; 313489 ; 315248 ;
Abstract
An electrodeless high intensity discharge lamp includes a light-transmissive arc tube for containing a plasma arc discharge, the arc tube having a top and a bottom and a side wall with a fill disposed therein. The fill includes at least one metal halide and a buffer gas. The arc tube has a wall with an interior surface having an annular region around the central extent of the side wall. The interior surface of the arc tube wall is smooth over the majority of its extent but has a liquid-stabilizing roughened surface in the annular region.