Process for the production of decorative glass ceramic articles

US5484467A · kind A · utility

Assignee

• Schott Glaswerke · DE

Inventors

• Peter Nass · Mainz, DE
• Otmar Becker · Langen, DE
• Klaus Kristen · Wiesbaden, DE
• Waldemar Weinberg · Kiebitzreihe, DE
• Manfred Borens · Mainz, DE
• Roland Leroux · Stadecken-Elsheim, DE
• Jurgen Thurk · Schornsheim, DE

Key dates

• Filing date: Aug 16, 1993
• Grant date: Jan 16, 1996
• Expiry date: Aug 16, 2013

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/22
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Process for the production of decorative glass ceramic articles, the design being sunk entirely or partially into the surface of the glass ceramic, wherein the surface, to be decorated, of the not-yet ceramed base glass is connected as the anode of the region of its glass transition temperature Tg up to Tg+100.degree. C. and a current is allowed to flow evoking an alteration of the surface of the base glass, and wherein the current is permitted to flow until the surface has been altered to a desired depth.