US4259371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for improving the alkali durability of metal oxide films formed by pyrolysis
Assignee: PPG Industries Inc
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Filing: 1979-07-25
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Granted: 1981-03-31
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Expires: 1999-07-25
Abstract
Abstract A method is disclosed for improving the uniformity and durability of a pyrolytically deposited metal oxide film on glass by cooling the coating solution and/or the atomizing air prior to the application of the coating composition to the hot glass surface.
Inventors
- 👤 Dennis S. Postupack
- 👤 John F. Sopko
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 13:15
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/22; C03C17/23; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/229; C03C2218/00; C03C2218/10; C03C2218/11; C03C2218/112
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
67 words
In a method for depositing a metal oxide coating on glass by contacting a hot glass surface with a solution of a thermally decomposable metal compound at a temperature sufficient to pyrolyze the compound to form a metal oxide, the improvement which comprises cooling the solution to a temperature of about 50° to 65° F. (about 10° to 18° C.) prior to delivery to the hot glass.
Claim 2
Dependent Claim
67 words
In a method for depositing a metal oxide coating on glass by contacting a hot glass surface with a solution of a thermally decomposable metal compound at a temperature sufficient to pyrolyze the compound to form a metal oxide, the improvement which comprises cooling the solution to a temperature of about 50° to 65° F. (about 10° to 18° C.) prior to delivery to the hot glass.
Claim 3
Dependent Claim
20 words
The method according to claim 1 wherein the solution is atomized with air and sprayed onto the hot glass surface.
Claim 4
Dependent Claim
36 words
The method according to claim 2 wherein the components of the coating apparatus are sufficiently insulated so that the cooled solution arrives at a spray gun at a temperature below about 80° F. (about 27° C.).
Claim 5
Dependent Claim
70 words
In a method for depositing a metal oxide coating on glass by contacting a hot glass surface with an air atomized solution of a thermaly decomposable metal compound at a temperature sufficient to pyrolyze the compound to form a metal oxide, the improvement which comprises cooling the atomizing air to a temperature of about 50° to 65° F. (about 10° to 18° C.) prior to delivery to the hot glass.
Claim 6
Dependent Claim
70 words
In a method for depositing a metal oxide coating on glass by contacting a hot glass surface with an air atomized solution of a thermaly decomposable metal compound at a temperature sufficient to pyrolyze the compound to form a metal oxide, the improvement which comprises cooling the atomizing air to a temperature of about 50° to 65° F. (about 10° to 18° C.) prior to delivery to the hot glass.
Claim 7
Dependent Claim
35 words
The method according to claim 4, wherein the components of the coating apparatus are sufficiently insulated so that the atomizing air arrives at a spray gun at temperature below about 80° F. (about 27° C.).
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-03-30 | 1984-09-29 | 1985-03-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-03-30 | 1988-09-29 | 1989-03-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-03-30 | 1992-09-29 | 1993-03-31 | $7700.00 | Window Closed / Lapsed |