US4898790A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low emissivity film for high temperature processing
Assignee: PPG Industries Ohio Inc
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Filing: 1988-04-01
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Granted: 1990-02-06
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Expires: 2008-04-01
Abstract
Abstract A multiple-layer, high transmittance, low emissivity coated article which can be subjected to high temperature processing such as bending, annealing, tempering, laminating or glass welding as a result of primer layers comprising metal and metal oxide is disclosed.
Inventors
- 👤 James J. Finley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 05:37
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/34; C03C17/36; C03C17/3602; C03C17/3618; C03C17/06; C03C17/3644; C03C17/3652; C03C17/3657; C03C17/366; C03C17/3681; C03C17/3689; 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; Y10T428/12611; Y10T428/12771; Y10T428/12806; Y10T428/12861; Y10T428/12896
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
90 words
A high transmittance, low emissivity article comprising: a. a transparent nonmetallic substrate; b. a first transparent antireflective metal oxide film deposited on a surface of said substrate; c. a transparent infrared reflective metallic film; d. a transparent metal-containing primer film deposited on said infrared reflective metallic film comprising a first layer of metal and a second layer of metal oxide; and e. a second transparent antireflective metal oxide film deposited on said primer film wherein said primer film comprises a different metal oxide from said second antireflective metal oxide film.
Claim 2
Dependent Claim
90 words
A high transmittance, low emissivity article comprising: a. a transparent nonmetallic substrate; b. a first transparent antireflective metal oxide film deposited on a surface of said substrate; c. a transparent infrared reflective metallic film; d. a transparent metal-containing primer film deposited on said infrared reflective metallic film comprising a first layer of metal and a second layer of metal oxide; and e. a second transparent antireflective metal oxide film deposited on said primer film wherein said primer film comprises a different metal oxide from said second antireflective metal oxide film.
Claim 3
Dependent Claim
11 words
An article according to claim 1, wherein the substrate is glass.
Claim 4
Dependent Claim
14 words
An article according to claim 2, wherein the infrared reflective metallic film is silver.
Claim 5
Dependent Claim
19 words
An article according to claim 3, wherein the metal oxide comprises an oxide reaction product of zinc and tin.
Claim 6
Dependent Claim
23 words
An article according to claim 1, wherein said metal-containing primer film comprises a metal selected from the group consisting of titanium and zirconium.
Claim 7
Dependent Claim
13 words
An article according to claim 5, wherein the metal-containing primer film comprises titanium.
Claim 8
Dependent Claim
20 words
An article according to claim 1, further comprising a protective metal-containing overcoat deposited over said second antireflective metal oxide film.
Claim 9
Dependent Claim
23 words
An article according to claim 1, further comprising an additional transparent metal-containing primer film deposited on said first transparent antireflective metal oxide film.
Claim 10
Dependent Claim
33 words
An article according to claim 8, wherein said additional primer film comprises a first layer of metal oxide and a second layer of metal onto which said infrared reflective metallic film is deposited.
Claim 11
Dependent Claim
23 words
An article according to claim 9, wherein the metal of said primer film is selected from the group consisting of titanium and zirconium.
Claim 12
Dependent Claim
11 words
An article according to claim 10, wherein the metal is titanium.
Claim 13
Dependent Claim
19 words
An article according to claim 11, wherein the primer film deposited on said infrared reflective metallic film comprises titanium.
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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) | 1993-02-05 | 1993-08-07 | 1994-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-02-05 | 1997-08-07 | 1998-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-02-05 | 2001-08-07 | 2002-02-06 | $7700.00 | Window Closed / Lapsed |