Patent · US Expired

Alkali-zinc-silicate glass-ceramics and glasses

US5618763A · kind A · utility

78Cited by

4References

14Claims

0Family size

Assignee

Ivoclar AG · LI

Inventors

Martin Frank · Wittlich, DE
Susanne Wegner · Künzelsau, DE
Volker Rheinberger · Vaduz, LI
Wolfram Hoeland · Shipka, BG

Key dates

Filing date	Jul 27, 1995
Grant date	Apr 8, 1997
Priority date	—
Expiry date	Jul 27, 2015

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03C3/085
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

Alkali-zinc-silicate glass ceramics and glasses are described which have a linear thermal expansion coefficient in the range from 8.0 to 18.7.times.10.sup.-6 K.sup.-1, an excellent chemical resistance and other advantageous optical properties and can be used in particular as dental material.

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