US3397078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silicon-containing diffusion coating for ferrous metals
Assignee: Boeing North American Inc
•
Filing: 1964-06-24
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Granted: 1968-08-13
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Expires: 1984-06-24
Abstract
No abstract record available.
Inventors
- 👤 William J Anderson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:34
CPC Classifications
C; C23; C23C; C23C10/00; C23C10/18; C23C10/20; C23C10/22
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2848352A
Cited
US3085028A
Cited
FR1312819A
Cited
US3192065A
Cited
US3212923A
Cited
US3236684A
Cited
US3220876A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-08-13 | 1972-02-12 | 1972-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-08-13 | 1976-02-12 | 1976-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-08-13 | 1980-02-12 | 1980-08-13 | $7700.00 | Window Closed / Lapsed |