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:
Jul. 26, 1977
Filed:
Dec. 06, 1973
Applicant:
Inventor:
Tjepke Hendrik Ekkelboom, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
H01J / ;
U.S. Cl.
CPC ...
313331 ; 313333 ; 313335 ; 219145 ; 148 24 ;
Abstract
A soldered joint between articles of at least one of the high melting point metals, high melting point carbides and high melting point metal oxides, which joint contains zirconium in which at least the external surface layer of the soldered joint consists of zirconium nitride. The soldered joint is preferably used for securing electrodes for high-pressure gas discharge lamps to current supply conductors. The soldered joint can be obtained by soldering with zirconium in a rare gas atmosphere whereafter the soldering area is heated for some time in a nitrogen-containing atmosphere.