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:
May. 15, 2001
Filed:
Mar. 02, 1999
Applicant:
Inventors:
David W. Johnston, Amesbury, MA (US);
Joseph A. Olsen, Rockport, MA (US);
Assignee:
Osray Sylvania Inc., Danvers, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J 1/718 ;
U.S. Cl.
CPC ...
H01J 1/718 ;
Abstract
An arc discharge lamp body made from a material selected from glass and ceramic materials and defining a discharge space; an arc generating and sustaining medium contained within said discharge space; and an electrically conducting member in at least one end of said body and extending both interiorly and exteriorly thereof, said electrically conducting member being formed of an electrically conductive ceramic material having a thermal coefficient of expansion substantially matching that of said body.