Glass-ceramic, articles and fabrication process

US7507681B2 · kind B2 · utility

Assignee

• Eurokera · FR

Inventors

• Bruce Gardiner Aitken · Corning, US
• Lothar Wondraczek · Erlangen, DE

Key dates

• Filing date: Feb 28, 2007
• Grant date: Mar 24, 2009
• Expiry date: Jun 20, 2027

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C10/0027
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Bi-containing glass-ceramic material, especially those containing β-quartz and/or β-spodumene solid solutions as the predominant crystalline phase, and the precursor glass material as well as process of making such glass-ceramic material and articles. The glass-ceramic can be made to have a dark color, and essentially to be free of V2O5, As2O3 and Sb2O3.