Multi-layer low emissivity thin film coating
Patent 4883721 Issued on November 28, 1989. Estimated Expiration Date: 
July 24, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
July 24, 2007. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesProtective overcoat for low emissivity coated article Protective coating for low emissivity coated articles Patent #: 4786563 InventorsAssigneeApplicationNo. 077226 filed on 07/24/1987US Classes:428/623, Adjacent to each other428/630, Noncrystalline silica or noncrystalline plural-oxide component (e.g., glass, etc.)428/632, Oxide-containing component428/633, Plural oxides428/673Ag-base componentExaminersPrimary: Rutledge, L. DewayneAssistant: Wyszomierski, George Attorney, Agent or FirmInternational ClassesB32B 015/04B32B 017/06 AbstractA multi-layer of thin film for application to a transparent substrate such as glass provides excellent visible light transmission while controlling both near infra-red solar energy and far infra-red reflected energy. The film comprises a layer of sputtered zinc, tin, or bismuth oxide, a layer of sputtered silver or silver alloy, a layer of sputtered titanium or stainless steel and a final layer of zinc, tin, or bismuth oxide. The product exhibits a nominal visible light transmittance of 55% and a reflectance less than about 15% for incident light on the substrate (glass) side at visible light wavelengths and reflectance less than about 6% for incident light on the film side in the visible wavelengths. Emissivity is less than 0.15. A method of fabricating the product is also disclosed.Field of SearchMore than one such componentAdjacent to each other Noncrystalline silica or noncrystalline plural-oxide component (e.g., glass, etc.) Oxide-containing component Plural oxides Ag-base component LIGHT TRANSMISSIVE SHEETS, WITH GAS SPACE THEREBETWEEN AND EDGE SEALED (E.G., DOUBLE GLAZED STORM WINDOW, ETC.) Noble metal containing | |
