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US4394064A
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US
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Durable ceramic enamel spandrels
Assignee: PPG Industries Ohio Inc
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Filing: 1981-06-30
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Granted: 1983-07-19
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Expires: 2001-06-30
Abstract
Abstract A durable spandrel panel comprising a colored ceramic enamel coating protected by a transparent metal oxide film is disclosed, wherein the dominant wavelength of light reflected by the colored ceramic enamel coating is not equivalent to the dominant wavelength of light transmitted by said transparent metal oxide film.
Inventors
- 👤 Samuel Dauson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:30
CPC Classifications
C; C23; C23D; C23D13/00; C03; C03C; C03C17/00; C03C17/02; C03C17/04; C03C17/22; C03C17/23; C03C17/245; C03C17/2453; C03C17/34; C03C17/3411; C03C17/3417; C03C17/36; C03C17/3602; C03C17/3657; C03C17/366; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/211; C03C2217/24; C03C2217/241; C03C2217/70; C03C2217/72; C03C2217/78; C03C2217/90; C03C2217/94; C03C2218/00; C03C2218/10; C03C2218/15; C03C2218/152
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
66 words
An article for use in curtainwall construction comprising: a. a rigid panel substrate; b. an opaque colored ceramic enamel coating fired on said substrate; and c. a transparent, colorless, protective metal oxide film deposited over said ceramic enamel coating, wherein the dominant wavelength of light reflected by said opaque ceramic enamel coating is not equivalent to the dominant wavelength of light transmitted by said transparent film.
Claim 2
Dependent Claim
66 words
An article for use in curtainwall construction comprising: a. a rigid panel substrate; b. an opaque colored ceramic enamel coating fired on said substrate; and c. a transparent, colorless, protective metal oxide film deposited over said ceramic enamel coating, wherein the dominant wavelength of light reflected by said opaque ceramic enamel coating is not equivalent to the dominant wavelength of light transmitted by said transparent film.
Claim 3
Dependent Claim
11 words
An article according to claim 1, wherein the substrate is glass.
Claim 4
Dependent Claim
13 words
An article according to claim 1, wherein the metal oxide coating is colorless.
Claim 5
Dependent Claim
16 words
An article according to claim 3, wherein said colorless transparent metal oxide film comprises tin oxide.
Claim 6
Dependent Claim
79 words
An article for use in curtainwall construction comprising: a. a glass substrate; b. an opaque colored ceramic enamel coating fired on said substrate; and c. a transparent, colorless, protective tin oxide film deposited over said ceramic enamel coating, wherein the dominant wavelength of light reflected by said opaque ceramic enamel coating is not equivalent to the dominant wavelength of light transmitted by said transparent film, and wherein the tin oxide is deposited by thermal decomposition of an organotin compound.
Claim 7
Dependent Claim
79 words
An article for use in curtainwall construction comprising: a. a glass substrate; b. an opaque colored ceramic enamel coating fired on said substrate; and c. a transparent, colorless, protective tin oxide film deposited over said ceramic enamel coating, wherein the dominant wavelength of light reflected by said opaque ceramic enamel coating is not equivalent to the dominant wavelength of light transmitted by said transparent film, and wherein the tin oxide is deposited by thermal decomposition of an organotin compound.
Claim 8
Dependent Claim
22 words
An article according to claim 5, wherein the tin oxide film exhibits a surface resistivity less than about 3000 ohms per square.
References Cited (Backward Citations)
US3869198A
Cited
US3951525A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-07-18 | 1987-01-17 | 1987-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-07-18 | 1991-01-17 | 1991-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-07-18 | 1995-01-17 | 1995-07-19 | $7700.00 | Window Closed / Lapsed |