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:
Oct. 24, 1978
Filed:
Jul. 28, 1977
Applicant:
Inventors:
Gertraud Agnes Meden-Piesslinger, Eindhoven, NL;
Johannes Theodorus Klomp, Eindhoven, NL;
Joris Jan Oomen, Eindhoven, NL;
Assignee:
U.S. Philips Corporation, New York, NY (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01B / ;
U.S. Cl.
CPC ...
252513 ; 252512 ; 252514 ; 252515 ; 252521 ; 313220 ; 313221 ; 106 52 ; 106 54 ; 106 732 ;
Abstract
A composite body consisting of two or more formed parts of densely sintered aluminum oxide and a metal such as an envelope for a mercury vapor discharge lamp with a metal halide filling. The parts are connected together with material which comprises at least two of the oxides SiO.sub.2, Al.sub.2 O.sub.3 and B.sub.2 O.sub.3 and at least one of the trivalent oxides La.sub.2 O.sub.3 and Y.sub.2 O.sub.3. This material is applied at a relatively low temperature and is resistant to the gas filling up to approximately 1350.degree. C.