US4948677A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High transmittance, low emissivity article and method of preparation
Assignee: PPG Industries Ohio Inc
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Filing: 1986-03-17
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Granted: 1990-08-14
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Expires: 2006-03-17
Abstract
Abstract A method for improving the adhesion between metal and metal oxide films and an improved multiple layer coated article comprising primer layers between metal and metal oxide films are disclosed. Copper containing layers are used as primer layers; for example, copper oxide. The several layers are prepared by sputtering.
Inventors
- 👤 F. Howard Gillery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 11:27
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/34; C03C17/36; C03C17/3602; C03C17/3613; C03C17/3618; C03C17/3644; C03C17/3652; C03C17/3657; C03C17/366; C03C17/3681; C23; C23C; C23C14/00; C23C14/06; C23C14/08; C23C14/086; C23C14/14; C23C14/18; C23C14/185; C23C28/00; G; G02; G02B; G02B1/00; G02B1/10; G02B1/11; G02B1/113; G02B1/115; G02B1/116; G02B5/00; G02B5/20; G02B5/208; C03C2217/00; C03C2217/70; C03C2217/78; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12535; Y10T428/12542; Y10T428/12549
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
86 words
A high transmittance, low emissivity article comprising: a. a transparent nonmetallic substrate; b. a first transparent film comprising a metal oxide deposited on a surface of said substrate; c. a first transparent primer layer deposited on said first metal oxide film; d. a transparent reflective metallic film deposited on said primer layer; e. a second transparent primer layer deposited on said reflective metallic film; and f. a second transparent film comprising a metal oxide deposited on said second primer layer, wherein the primer films comprise copper.
Claim 2
Dependent Claim
86 words
A high transmittance, low emissivity article comprising: a. a transparent nonmetallic substrate; b. a first transparent film comprising a metal oxide deposited on a surface of said substrate; c. a first transparent primer layer deposited on said first metal oxide film; d. a transparent reflective metallic film deposited on said primer layer; e. a second transparent primer layer deposited on said reflective metallic film; and f. a second transparent film comprising a metal oxide deposited on said second primer layer, wherein the primer films comprise copper.
Claim 3
Dependent Claim
13 words
An article according to claim 1, wherein the primer layers comprise copper oxide.
Claim 4
Independent Claim
139 words
A method for making a multiple layer high transmittance, low emissivity coated product comprising the steps of: a. placing a transparent, nonmetallic substrate in a sputtering chamber; b. sputtering a cathode target comprising an alloy of zinc and tin in a reactive atmosphere comprising oxygen to deposit a transparent metal alloy oxide film on a surface of said substrate; c. sputtering a copper target to deposit a primer layer on said oxide film; d. sputtering a silver cathode target, in an inert atmosphere to deposit a transparent silver film on said primer layer; e. sputtering a copper target to deposit a second primer layer on said silver film; and f. sputtering a cathode target comprising an alloy of zinc and tin in a reactive atmosphere comprising oxygen to deposit a metal alloy oxide film on said second primer layer.
Claim 5
Independent Claim
139 words
A method for making a multiple layer high transmittance, low emissivity coated product comprising the steps of: a. placing a transparent, nonmetallic substrate in a sputtering chamber; b. sputtering a cathode target comprising an alloy of zinc and tin in a reactive atmosphere comprising oxygen to deposit a transparent metal alloy oxide film on a surface of said substrate; c. sputtering a copper target to deposit a primer layer on said oxide film; d. sputtering a silver cathode target, in an inert atmosphere to deposit a transparent silver film on said primer layer; e. sputtering a copper target to deposit a second primer layer on said silver film; and f. sputtering a cathode target comprising an alloy of zinc and tin in a reactive atmosphere comprising oxygen to deposit a metal alloy oxide film on said second primer layer.
Claim 6
Dependent Claim
11 words
The method according to claim 3, wherein the substrate is glass.
Claim 7
Dependent Claim
16 words
The method according to claim 4, wherein said metal alloy consists essentially of zinc and tin.
Claim 8
Dependent Claim
15 words
The method according to claim 5, wherein said metal alloy oxide film comprises zinc stannate.
Claim 9
Dependent Claim
13 words
The method according to claim 1, wherein said primer layers comprise copper oxide.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-08-13 | 1994-02-12 | 1994-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-13 | 1998-02-12 | 1998-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-13 | 2002-02-12 | 2002-08-14 | $7700.00 | Window Closed / Lapsed |