Patent · US Active

Prestress by use of a gradient material

US11780765B2 · kind B2 · utility

0Cited by

1References

20Claims

0Family size

Assignee

Schott AG · DE

Inventors

Rainer Eichholz · Frankfurt, DE
Markus Ollig · Weiden, DE
Arne Riecke · Waldsassen, DE
Ulrich Fotheringham · Wiesbaden, DE

Key dates

Filing date	May 10, 2021
Grant date	Oct 10, 2023
Priority date	—
Expiry date	Apr 6, 2042

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC03C2201/58
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

The invention relates to glass articles, such as for example glass tubes or flat glasses, where the material at the surface by a targeted process control has gradient material properties which in turn result in a compressive prestress of the surface. The invention also relates to a method for the production of the glass articles as well as their use.

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