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, 1994
Filed:
Apr. 21, 1992
Applicant:
Inventors:
Assignee:
Asahi Glass Company Ltd., Tokyo, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
C03B / ;
U.S. Cl.
CPC ...
65 602 ; 65605 ; 65 608 ; 501 17 ; 4274197 ; 427266 ; 427269 ; 4273747 ;
Abstract
A process of forming a glass sheet by coating a portion of a glass sheet with a ceramic color paste, then forming a silver paste over a portion of the ceramic color paste and then firing the sheet. The ceramic color paste is of a composition which prevents the migration of silver ions to the glass plate during the firing. Migrated silver ions causes discoloration in the glass. The ceramic color composition comprising, as inorganic components, from 40 to 95 wt % of a glass powder, from 4 to 40 wt % of a heat resistant pigment powder and from 1 to 30 wt % of a boride, a nitride, a carbide, lead sulfide or a mixture thereof.