The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 25, 2011
Filed:
Mar. 28, 2007
Heinz Schicht, Bethau, DE;
Uwe Schmidt, Falkenberg, DE;
Pierre-alain Gillet, Mareil-Marly, FR;
Saint-Gobain Glass France, Courbevoie, FR;
Abstract
A low-emissivity multilayer system highly resistant to heat treatment for transparent substrates, in particular for window panes comprises, starting from the substrate, at least a lower antireflection coating consisting of several partial layers and including a layer essentially consisting of ZnO which is adjacent with a silver-based functional layer, an essentially metallic blocking layer located on top of the silver-based layer, an upper antireflection coating consisting of several partial layers and a cover coating optionally consisting of several partial layers. The upper antireflection coating has: a partial layer of ZnO or a mixed oxide ZnMeOthat contains ZnO or a succession of layers of mixed oxides of the ZnO:Al/ZnMeOtype; a partial layer of SiNor SiON; and between these two partial layers, a separating layer with a thickness of 0.5 to 5 nm, consisting of a metal oxide or a mixed oxide with a cubic crystal lattice, which prevents direct contact between these two partial layers. Coated window panes that are highly resistant to technical handling operations comprising an inserted separating layer that makes it possible to further improve the mechanical and chemical properties of the multilayer system.