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. 29, 1977
Filed:
Mar. 03, 1975
Applicant:
Inventor:
Francis W Martin, Painted Post, NY (US);
Assignee:
Corning Glass Works, Corning, NY (US);
Primary Examiner:
Int. Cl.
CPC ...
C03C / ; C03C / ;
U.S. Cl.
CPC ...
428428 ; 65 33 ; 106 396 ; 106 52 ; 106 53 ; 106 48 ; 106 49 ;
Abstract
Sinterable powdered glasses comprising MgO, Al.sub.2 O.sub.3, SiO.sub.2 and at least one modifying oxide selected from the group consisting of BaO, PbO, SrO and CaO, which are thermally-crystallizable at sintering temperatures to yield highly crystalline, low expansion, thermally stable glass-ceramic coatings comprising crystals of a structure corresponding to hexagonal cordierite as the crystal phase, are described. The use of the glasses to provide crystallized electrical barrier layers on glass-ceramic articles is also described.