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:
Apr. 09, 1991
Filed:
Jul. 06, 1989
Applicant:
Inventors:
Ferenc Nagel, Budapest, HU;
Maria J Farkasne, Budapest, HU;
Assignee:
Tungsram Reszvenytarsasag, Budapest, HU;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C03C / ;
U.S. Cl.
CPC ...
501 15 ; 501 18 ; 501 41 ; 501 51 ; 501 23 ;
Abstract
The soldering enamel is composed of a basic enamel consisting of aluminium oxide and a rare earth metal oxide and/or an alkali earth metal oxide and, in the given case, some other metallic or metalloid oxide, and of a ceramic filling material. The filling material is a zirconium-rare earth oxide of perovskite crystal structure. The quantity of the filling material amounts up to 5 mass % referred to the overall quantity of enamel.