Patent US2750286A successfully refreshed from Google Patents.
US2750286A
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Production of iron-nickel alloys from low grade ores
Assignee: Societe dElectro Chimie dElectro Metallurgie et des Acieries Electriques Dugine SA SECEMAU
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Filing: 1953-06-09
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Granted: 1956-06-12
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Expires: 1973-06-09
Abstract
No abstract record available.
Inventors
- 👤 Perrin Rene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 08:42
CPC Classifications
C; C22; C22B; C22B23/00; C22B23/02; C22B23/023
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
A PROCESS FOR EXTRACTING NICKEL FROM LOW GRADE NICKEL ORES CONTAINING AN OXIDIC COMPOUND OF NICKEL, WHICH COMPRISES VIOLENTLY INTERMIXING MOLTEN LOW GRADE NICKEL ORE WITH A BATH OF FERRO-NICKEL CONTAINING AT LEAST 25% BY WEIGHT OF NICKEL TO REDUCE NICKEL OXIDE FROM THE ORE AND INTRODUCE IT INTO THE METAL OF THE BATH, REMOVING THE DENICKELIZED ORE FROM THE BATH, ALSO WITHDRAWING
Claim 2
Dependent Claim
63 words
A PROCESS FOR EXTRACTING NICKEL FROM LOW GRADE NICKEL ORES CONTAINING AN OXIDIC COMPOUND OF NICKEL, WHICH COMPRISES VIOLENTLY INTERMIXING MOLTEN LOW GRADE NICKEL ORE WITH A BATH OF FERRO-NICKEL CONTAINING AT LEAST 25% BY WEIGHT OF NICKEL TO REDUCE NICKEL OXIDE FROM THE ORE AND INTRODUCE IT INTO THE METAL OF THE BATH, REMOVING THE DENICKELIZED ORE FROM THE BATH, ALSO WITHDRAWING
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-06-12 | 1959-12-12 | 1960-06-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-06-12 | 1963-12-12 | 1964-06-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-06-12 | 1967-12-12 | 1968-06-12 | $7700.00 | Window Closed / Lapsed |