Patent · US Expired

Transparent substrate provided with thin layers having reflection properties in the infrared

US6306525A · kind A · utility

37Cited by

1References

16Claims

0Family size

Assignee

Saint-Gobain Vitrage · FR

Inventors

Heinz Schicht · Bethau, DE
Uwe Schmidt · Falkenberg, DE
Wilfried Kaiser · Torgau, DE
Bodo Hryniw · Torgau, DE

Key dates

Filing date	Dec 11, 1998
Grant date	Oct 23, 2001
Priority date	—
Expiry date	Dec 11, 2018

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY10T428/265
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A thin multilayer coating having reflection properties in the infrared and/or in the solar radiation range of the low-emissivity type for windows comprises a lower dielectric antireflection treatment layer, at least one silver-based functional layer, at least one metallic protection layer adjacent to the silver layer and an upper dielectric antireflection treatment layer. The upper dielectric antireflection treatment layer comprises a lower partial layer made of SnO.sub.2, ZnO, TiO.sub.2, Bi.sub.2 O.sub.3 or Al.sub.2 O.sub.3 and an upper partial layer made of a mixed oxide based on zinc and aluminium, especially one having a spinel structure of the ZnAl.sub.2 O.sub.4 type.

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