US2750286A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of iron-nickel alloys from low grade ores
Assignee: Societe dElectro Chimie dElectro Metallurgie et des Acieries Electriques Dugine SA SECEMAU
•
Filing: 1953-06-09
•
Granted: 1956-06-12
•
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 08:35
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
References Cited (Backward Citations)
US476913A
Cited
US1415183A
Cited
US1300279A
Cited
US1421185A
Cited
US1647381A
Cited
US1546965A
Cited
US1938832A
Cited
US2100265A
Cited
US2622977A
Cited
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 |