Low emissivity coatings on transparent substrates
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United States of America Patent
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-
Jul 31, 1984
Grant Date -
N/A
app pub date -
Sep 19, 1983
filing date -
Sep 21, 1982
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A low emissivity coating on a transparent substrate of glass or plastics material is produced by cathode sputtering a layer of silver and thereafter reactively sputtering an anti-reflection metal oxide layer over the silver in the presence of oxygen or an oxidizing gas, wherein a small amount of an additional metal other than silver is sputtered onto the silver before the overlying anti-reflection metal oxide layer is applied. The process produces a new low emissivity coated product comprising a glass or plastics substrate with a low emissivity coating comprising a silver layer, a small amount of additional metal dispersed non-uniformly in the silver layer and possibly extending over the silver layer, and an overlying anti-reflection metal oxide coating.
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