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. 17, 1987
Filed:
Mar. 26, 1986
Applicant:
Inventor:
Johan Liebe, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ; H01J / ;
U.S. Cl.
CPC ...
313 25 ; 313 44 ; 313634 ; 313 42 ;
Abstract
A high-pressure discharge lamp provided with a cylindrical shield near an end and around and at a certain distance from the discharge envelope. The cylindrical shield is electrically insulated from current-conveying parts, so that migration of filling constituents through the wall of the discharge envelope is counteracted.