US3479180A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for making chromium alloys of dispersion-modified iron-group metals,and product
Assignee: Fansteel Inc
•
Filing: 1967-05-24
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Granted: 1969-11-18
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Expires: 1987-05-24
Abstract
No abstract record available.
Inventors
- 👤 John B Lambert
- 👤 Harold G Marsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 14:34
CPC Classifications
C; C22; C22C; C22C32/00; C22C32/001; C22C32/0015; C22C32/0026; Y; Y10; Y10S; Y10S75/00; Y10S75/95; Y10S75/951
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US3143789A
Cited
US3159908A
Cited
US3317285A
Cited
US3393067A
Cited
US3388010A
Cited
US3386814A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-11-17 | 1973-05-19 | 1973-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-11-17 | 1977-05-19 | 1977-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-11-17 | 1981-05-19 | 1981-11-18 | $7700.00 | Window Closed / Lapsed |