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:
Apr. 24, 1990
Filed:
May. 19, 1989
Anton Dietrich, Wiesenfelden, DE;
Klaus Hartig, Ronneburg, DE;
Joachim Szczyrbowski, Regensburg, DE;
Leybold-Heraeus GmbH, Cologne, DE;
Abstract
A system of layers is built up on substrates of mineral glass in the following order: first layer: an oxide from the group, stannic oxide, silicon dioxide, aluminum oxide, tantalum oxide, zirconium oxide, or their mixed oxides; second layer: a metal from the group, tantalum, tungsten, nickel, iron; third layer: silver or a silver alloy containing at least 50 weight-percent of silver; fourth layer: a metal from the group, tantalum, tungsten, nickel, iron or their alloys; fifth layer: an oxide from the group, stannic oxide, silicon dioxide, aluminum oxide, tantalum oxide, zirconium oxide or their mixed oxides. After that, the substrate with all the coating layers is heated to the softening temperature of the glass in an oxidizing atmosphere and bent to the final shape.