Patent · US Active

Glass ceramic

US7592278B2 · kind B2 · utility

0Cited by

9References

14Claims

0Family size

Assignee

Schott AG · DE

Inventors

Meike Schneider · Taunusstein, DE
Thilo Zachau · Bürstadt, DE
Jochen Alkemper · Klein-Winternheim, DE
Dirk Sprenger · Stadecken-Elsheim, DE

Key dates

Filing date	Dec 4, 2006
Grant date	Sep 22, 2009
Priority date	—
Expiry date	Dec 4, 2026

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03C10/0054
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A glass ceramic is specified, with a crystalline phase consisting predominantly of BPO4, and preferably exclusively of BPO4. The glass ceramic contains 10 to 50 wt.-% SiO2, 5 to 40 B2O3, 25 to 75 wt.-% P2O5, up to 5 wt.-% refining agents, up to 1 wt.-% impurities, and 0.1 to 10 wt.-% of at least one constituent selected from the group of M32O3, M52O5 and M4O2, wherein M3 is an element selected from the group of the lanthanoids, yttrium, iron, aluminum, gallium, indium and thallium; wherein M5 is an element selected from the group of vanadium, niobium and tantalum and wherein M4 is an element selected from the group of titanium, zirconium, hafnium and cerium. The glass ceramic is advantageously suitable for being coated with semiconductor materials.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.