US3484232A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of improving the properties of a ferrous metal in the molten state
Assignee: Air Liquide SA
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Filing: 1966-09-26
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Granted: 1969-12-16
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Expires: 1986-09-26
Abstract
No abstract record available.
Inventors
- 👤 Pierre Yves Karinthi
- 👤 Etienne Spire
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:37
CPC Classifications
C; C21; C21C; C21C1/00; B; B22; B22D; B22D1/00; B22D1/002; B22D1/005
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
CA590537A
Cited
CA619017A
Cited
CA739408A
Cited
US2134905A
Cited
US2871008A
Cited
FR1146218A
Cited
GB977105A
Cited
GB999481A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1972-12-15 | 1973-06-16 | 1973-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1976-12-15 | 1977-06-16 | 1977-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1980-12-15 | 1981-06-16 | 1981-12-16 | $7700.00 | Window Closed / Lapsed |