US2835557A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing nickel by the carbonyl process
Assignee: Huntington Alloys Corp
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Filing: 1955-03-30
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Granted: 1958-05-20
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Expires: 1975-03-30
Abstract
No abstract record available.
Inventors
- 👤 West De Witt Henry
- 👤 Simpson Alexander Bowen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 22:39
CPC Classifications
C; C22; C22B; C22B1/00; C22B1/02; C22B1/10; B; B01; B01J; B01J8/00; B01J8/18; B01J8/24; B01J8/26; C22B23/00; C22B23/06; C22B23/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
THE IMPROVED PROCESS FOR THE EXTRACTION OF NICKEL AS NICKEL CARBONYL FROM NICKEL OXIDE-CONTAINING MATERIALS COMPRISING MIXING FINELY-DIVIDED INERT PARTICLES WITH FINELY-DIVIDED PARTICLES OF NICKEL OXIDE-CONTAINING MATERIAL, TREATING THE RESULTING MIXTURE IN AT LEAST ONE FLUID BED WITH A REDUCING GAS AT NICKEL OXIDE-REDUCING TEMPERATURES, SUBSEQUENTLY PARTIALLY VOLATILIZING THE NICKEL IN THE REDUCED MATERIAL AS NICKEL CARBONYL BY TREATMENT OF THE MIXED PARTICLES WITH CARBON MONOXIDE, SEPARATING AND RECIRCULATING THE FINELY-DIVIDED INERT PARTICLES AND ANY NON-EXTRACTED PARTICLES, AND THEN COMPLETING THE VOLATILIZATION OF THE NICKEL AS NICKEL CARBONYL BY TREATING THE PARTIALLY-EXTRACTED, FINELY-DIVIDED SOLIDS WITH CARBON MONOXIDE.
Claim 2
Dependent Claim
97 words
THE IMPROVED PROCESS FOR THE EXTRACTION OF NICKEL AS NICKEL CARBONYL FROM NICKEL OXIDE-CONTAINING MATERIALS COMPRISING MIXING FINELY-DIVIDED INERT PARTICLES WITH FINELY-DIVIDED PARTICLES OF NICKEL OXIDE-CONTAINING MATERIAL, TREATING THE RESULTING MIXTURE IN AT LEAST ONE FLUID BED WITH A REDUCING GAS AT NICKEL OXIDE-REDUCING TEMPERATURES, SUBSEQUENTLY PARTIALLY VOLATILIZING THE NICKEL IN THE REDUCED MATERIAL AS NICKEL CARBONYL BY TREATMENT OF THE MIXED PARTICLES WITH CARBON MONOXIDE, SEPARATING AND RECIRCULATING THE FINELY-DIVIDED INERT PARTICLES AND ANY NON-EXTRACTED PARTICLES, AND THEN COMPLETING THE VOLATILIZATION OF THE NICKEL AS NICKEL CARBONYL BY TREATING THE PARTIALLY-EXTRACTED, FINELY-DIVIDED SOLIDS WITH CARBON MONOXIDE.
References Cited (Backward Citations)
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Cited
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Cited
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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) | 1961-05-19 | 1961-11-18 | 1962-05-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-19 | 1965-11-18 | 1966-05-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-19 | 1969-11-18 | 1970-05-20 | $7700.00 | Window Closed / Lapsed |