US2859131A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of applying a film comprising chromium oxide on a glass surface
Assignee: Libbey Owens Ford Glass Co
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Filing: 1955-12-13
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Granted: 1958-11-04
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Expires: 1975-12-13
Abstract
Abstract Films of chromium oxide are formed on glass or ceramic surfaces by heating the surface to a temperature above 800 DEG F. and spraying the heated surface with a solution of an oxygenated chromium compound of the type CrO2X2, where X is a halogen, e.g. chromyl chloride. The preferred solvent is acetic acid. The chromium compound may be mixed with a tin compound so as to produce a mixed oxide coating or a layer of chromium oxide may be deposited on a layer of tin oxide formed by a similar process from stannic chloride.
Inventors
- 👤 George B Watkins
- 👤 Lazarus D Thomas
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:28
CPC Classifications
C; C03; C03C; C03C17/00; C03C17/22; C03C17/23; C03C17/25; B; B29; B29B; B29B13/00; B29B13/02; B29B13/022; C03C2217/00; C03C2217/20; C03C2217/21; C03C2217/217; C03C2218/00; C03C2218/10; C03C2218/11; C03C2218/112
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
36 words
IN A METHOD OF FORMING A FILM COMPRISING CHROMIUM OXIDE ON A GLASS SURFACE, THE STEPS OF HEATING THE GLASS SURFACE TO A TEMPERATURE ABOVE 800*F. AND SPRAYING SAID HEATED SURFACE WITH A SOLUTION OF CRO2CI2.
Claim 2
Dependent Claim
36 words
IN A METHOD OF FORMING A FILM COMPRISING CHROMIUM OXIDE ON A GLASS SURFACE, THE STEPS OF HEATING THE GLASS SURFACE TO A TEMPERATURE ABOVE 800*F. AND SPRAYING SAID HEATED SURFACE WITH A SOLUTION OF CRO2CI2.
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) | 1961-11-03 | 1962-05-05 | 1962-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-11-03 | 1966-05-05 | 1966-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-11-03 | 1970-05-05 | 1970-11-04 | $7700.00 | Window Closed / Lapsed |