Multiple glazed windows including selective reflecting metal/metal oxide coatings

• US 3,935,351 A
• Filed: 05/17/1974
• Issued: 01/27/1976
• Est. Priority Date: 05/12/1972
• Status: Expired due to Term

• Current Assignee: PPG Industries Incorporated (Nouryon BV)
• Original Assignee: PPG Industries Incorporated (Nouryon BV)
• Inventors: Franz, Helmut
• Primary Examiner(s): Lesmes, George F.
• Assistant Examiner(s): McDonald, Alan T.
• Application Number:
  US05/470,769
• Time in Patent Office: 620 Days
• Field of Search: 117/71 R, 117/33.3, 117/124 A, 117/124 B, 117/124 C, 350/1, 350/164, 350/166, 161/196, 161/192, 156/107, 156/109
• US Class Current: 428/34
• CPC Class Codes: C03C 17/36 at least one coating being a metal
• CPC Class Codes: C03C 17/3605 Coatings of the type glass/metal/inorganic compound
• CPC Class Codes: C03C 17/3607 Coatings of the type glass/inorganic compound/metal
• CPC Class Codes: C03C 17/3642 the multilayer coating containing a metal layer
• CPC Class Codes: C03C 17/3649 made of metals other than silver
• CPC Class Codes: C03C 17/3681 the multilayer coating being used in glazing, e.g. windows or windscreens
• CPC Class Codes: C03C 17/3689 one oxide layer being obtained by oxidation of a metallic layer
• CPC Class Codes: C03C 17/3697 one metallic layer at least being obtained by electroless plating
• CPC Class Codes: Y10T 428/265 1 mil or less

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.

Claims

1. 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.