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. 08, 1977
Filed:
Oct. 29, 1975
Applicant:
Inventors:
Cornelis Adrianus Jacobs, Eindhoven, NL;
Bart VAN DER Leeuw, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313217 ; 313285 ; 313331 ;
Abstract
The tubular ceramic discharge vessel of electric discharge lamps is sealed according to the invention with a cylindrical and an annular ceramic moulding between which a tubular current leadthrough member is accommodated consisting of tungsten, molybdenum, rhenium or alloys thereof. The current leadthrough member is connected in a vacuum-tight manner to the two ceramic mouldings by means of sealing ceramic.