Multiple glazed windows including selective reflecting metal/metal oxide coatings
AssigneePPG Industries, Inc.
InventorHelmut Franz
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Abstract
A multiple glazed glass article including two glass panels separated by a spacer and held in a marginal frame is disclosed. Two coatings are present on one of the glass panels providing the article with useful and esthetic reflective and transmission properties. One coating preferably includes a metal such as silver, chromium, iron, cobalt or nickel and the other coating preferably includes a metal oxide such as iron oxide or copper oxide. The metal oxide layer is essentially the oxide of a metal other than the metal of the metal layer.
Claims1
In a multiple glazed glass article comprising at least two glass panels disposed in substantially parallel relation, and spaced apart by a space member disposed between said panels about their margins and held in said relation by a marginal frame member, the improvement comprising at least two coatings affixed to at least one side of at least one of said panels:
- a. a first coating affixed to the glass said first coating being a transparent metal coating consisting essentially of nickel substantially in its reduced metallic state;
- and
- b. a second coating affixed to the first coating said second coating being a transparent metal oxide coating consisting essentially of copper oxide of from about 50 to about 1500 angstroms.
Dependencies are inferred from the claim text.