Patent US3577268A successfully refreshed from Google Patents.
US3577268A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of coating iron,nickel or cobalt alloy with aluminum
Assignee: Cabot Corp
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Filing: 1969-03-12
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Granted: 1971-05-04
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Expires: 1989-03-12
Abstract
Abstract ALLOY IN A NON-OXIDIZING ATOMOSPHERE TOA TEMPERATURE ABOVE ABOUT 1800*F. TO CAUSE THE ALUMINUM-MAGNESIUM MATERIAL TO COAT AND DIFFUSE INTO THE TREATED SURFACE OF THE IRON, NICKEL OR COBALT BASE ALLOY. A PROCESS FOR COATING AN IRON, NICKEL OR COBALT BASE ALLOY IS PROVIDED WHICH COMPRISES TREATING A SURFACE OF THE SELECTED ALLOY WITH A MATEIAL CONSISTING ESSENTIALLY OF FROM ABOUT 10 TO 30 WEIGHT PERCENT MAGNESIUM WITH THE BALANCE BEING ALUMINUM AND THEN HEATING THE SO-TREATED
Inventors
- 👤 Marshall G Whitfield
- 👤 Richard S Parzuchowski
- 👤 Dennis B Moore
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:54
CPC Classifications
C; C23; C23C; C23C10/00; C23C10/28; C23C10/34; C23C10/52
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) | 1974-05-03 | 1974-11-02 | 1975-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-03 | 1978-11-02 | 1979-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-03 | 1982-11-02 | 1983-05-04 | $7700.00 | Window Closed / Lapsed |