Patent · US Active

Optically detectable, floatable arsenic- and antimony-free, glazable lithium-aluminosilicate glass

US8053381B2 · kind B2 · utility

12Cited by

4References

9Claims

0Family size

Assignee

Schott AG · DE

Inventors

Friedrich Siebers · Nierstein, DE
Hans-Werner Beudt · Wiesbaden, DE
Bernd Rüdinger · Arnstadt, DE
Gerbard Lautenschläger · Jena, DE
Klaus Schneider · Zell am Harmersbach, DE
Michael Jacquorie · Rheinau, DE
Wolfgang Schmidbauer · Mainz, DE

Key dates

Filing date	Feb 26, 2009
Grant date	Nov 8, 2011
Priority date	—
Expiry date	Jun 15, 2029

Classification

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

Abstract

An optically detectable, floatable arsenic- and antimony-free, glazable lithium-aluminosilicate glass that can be prestressed and the glass ceramic converted therefrom are described. The glass or the glass ceramic has a composition (in % by weight based on oxide) of essentially SiO2 55-69, Al2O3 19-25, Li2O 3.2-5, Na2O 0-1.5, K2O 0-1.5, MgO 0-2.2, CaO 0-2.0, SrO 0-2.0, BaO 0-2.5, ZnO 0-<1.5, TiO2 1-3, ZrO2 1-2.5, SnO2 0.1-<1, ΣTiO2+ZrO2+SnO2 2.5-5, P2O5 0-3, Nd2O3 0.01-0.6, CoO 0-0.005, F 0-1, B2O3 0-2.

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