Patent US3748170A successfully refreshed from Google Patents.
US3748170A
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Method of coating metal
Assignee: Boeing North American Inc
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Filing: 1971-09-01
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Granted: 1973-07-24
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Expires: 1991-09-01
Abstract
Abstract A METHOD OF PROVIDING NOVEL PROTECTIVE COATING FOR METALS BY FIRING IN AN OXIDAZING ENVIRONMENT AT A TEMPERATURE IN THE GENERAL RANGE OF 1250*F. TO 1600*F., SAID COATING ESSENTIALLY CONSISTING OF ALUMINUM, A SPECIAL MILL ADDITION HAVING BOTH REFRACTORY COMPOUND AND REDUCIBLE COMPOUND CONSTITUENTS, AND A SPECIAL HOMOGENEOUS FRIT; THUS OBTAINING IMPROVED RESISTANCE OF THE METALS TO WEATHERING AND TO CORORSION BY ALKALINE OR ACID SOLUTION ATTACK UNDER ATMOSPHERIC CONDITIONS.
Inventors
- 👤 H Michael
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 20:31
CPC Classifications
C; C23; C23D; C23D5/00; C23D5/02; C03; C03C; C03C3/00; C03C3/04; C03C3/062; C03C3/064; C03C3/076; C03C3/089; C03C4/00; C03C8/00; C03C8/02; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028; Y10T428/12063; Y10T428/12104; Y10T428/12111; Y10T428/12125; Y10T428/12493; Y10T428/12986
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |