US2796371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Corrosion resistant protective coating on aluminum and aluminum alloys
Assignee: Allied Res Products Inc
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Filing: 1955-03-16
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Granted: 1957-06-18
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Expires: 1975-03-16
Abstract
No abstract record available.
Inventors
- 👤 Charles W Ostrander
- 👤 Nicholas R Congiundi
- 👤 Walter E Pocock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:48
CPC Classifications
C; C23; C23C; C23C22/00; C23C22/05; C23C22/06; C23C22/34; C23C22/37
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A COMPOSITION FOR USE IN AQUEOUS SOLUTION TO IMPART A CORROSION-RESISTANT COATING TO ALUMINUM AND ALLOYS THEREOF IN WHICH THE COATING-PRODUCING INGREDIENTS CONSIST ESSENTIALLY OF HEXAVALENT CHROMIUM, A FLUORINE-BEARING COMPOUND, AND A CYANIDE SELECTED FROM THE GROUP CONSISTING OF FERRICYANIC ACID, FERROCYANIC ACID, AND SALTS THEREOF AND MIXTURES OF THESE ACIDS AND SALTS, AND A WATER SOLUBLE SOURCE OF BARIUM.
Claim 2
Dependent Claim
60 words
A COMPOSITION FOR USE IN AQUEOUS SOLUTION TO IMPART A CORROSION-RESISTANT COATING TO ALUMINUM AND ALLOYS THEREOF IN WHICH THE COATING-PRODUCING INGREDIENTS CONSIST ESSENTIALLY OF HEXAVALENT CHROMIUM, A FLUORINE-BEARING COMPOUND, AND A CYANIDE SELECTED FROM THE GROUP CONSISTING OF FERRICYANIC ACID, FERROCYANIC ACID, AND SALTS THEREOF AND MIXTURES OF THESE ACIDS AND SALTS, AND A WATER SOLUBLE SOURCE OF BARIUM.
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) | 1960-06-17 | 1960-12-17 | 1961-06-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-06-17 | 1964-12-17 | 1965-06-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-06-17 | 1968-12-17 | 1969-06-18 | $7700.00 | Window Closed / Lapsed |