US3079235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing metallic nickel and nickel carbonyl
Assignee: Montedison SpA
•
Filing: 1956-11-27
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Granted: 1963-02-26
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Expires: 1976-11-27
Abstract
No abstract record available.
Inventors
- 👤 Dakli Ibrahim
- 👤 Arsizio Busto
- 👤 Corsi Luigi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:51
CPC Classifications
C; C01; C01G; C01G53/00; C01G53/02; C22; C22B; C22B23/00; C22B23/06; C22B23/065; C22B5/00; C22B5/02; C22B5/20; Y; Y02; Y02P; Y02P10/00; Y02P10/10; Y02P10/122
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
THE METHOD OF PREPARING A NICKEL CARBONYL WHICH COMPRISES AS A FIRST STEP REDUCING IN A REACTION VESSEL AN AQUEOUS SUSPENSION OF NICKEL HYDROXIDE, IN THE PRESENCE OF, PER EACH MOL OF NICKEL FROM 1/20 TO 1/10 MOL OF A SULFIDE TAKEN FROM EACH GROUP CONSITING OF CARBON DISULFIDE, BARIUM SULFIDE AND SODIUM SULFIDE, HEATING TO A TEMPERATURE OF 150 TO 180*C. WHILE STIRRING, INTRODUCTION A REDUCING GAS TAKEN FROM THE GROUP CONSISTING OF CARBON MONIXIDE, HYDROGEN AND MIXTURES THEREOF UNTIL A PARTIAL REDUCTION GAS PRESSURE OF 15 TO 30 ATM. IS ATTAINED. CONTINUING STIRRING AND HEATING UNTIL THE REDUCTION TO FINELY DIVIDED METALLIC NICKEL IS COMPLETED, COOLING, DISCHARGING THE GASEOUS CONTENT OF THE REACTION VESSEL; AND, AS A SECOND STEP, ADJUSTING TO A TEMPERATURE OF 20 TO 70*C., STIRRING, INTRODUCING CARBON MONOXIDE INTO THE AQUEOUS MIXTURE OF SULFIDE CONTAINING METALLIC NICKEL TO PUT THE ENCLOSED VESSEL UNDER A TOTAL PRESSURE OF 30 TO 70 ATM. AMD CONTINUING STIRRING AND HEATING UNTIL THE DESIRED AMOUNT OF NICKEL CARBONYL HAS FORMED.
Claim 2
Independent Claim
170 words
THE METHOD OF PREPARING A NICKEL CARBONYL WHICH COMPRISES AS A FIRST STEP REDUCING IN A REACTION VESSEL AN AQUEOUS SUSPENSION OF NICKEL HYDROXIDE, IN THE PRESENCE OF, PER EACH MOL OF NICKEL FROM 1/20 TO 1/10 MOL OF A SULFIDE TAKEN FROM EACH GROUP CONSITING OF CARBON DISULFIDE, BARIUM SULFIDE AND SODIUM SULFIDE, HEATING TO A TEMPERATURE OF 150 TO 180*C. WHILE STIRRING, INTRODUCTION A REDUCING GAS TAKEN FROM THE GROUP CONSISTING OF CARBON MONIXIDE, HYDROGEN AND MIXTURES THEREOF UNTIL A PARTIAL REDUCTION GAS PRESSURE OF 15 TO 30 ATM. IS ATTAINED. CONTINUING STIRRING AND HEATING UNTIL THE REDUCTION TO FINELY DIVIDED METALLIC NICKEL IS COMPLETED, COOLING, DISCHARGING THE GASEOUS CONTENT OF THE REACTION VESSEL; AND, AS A SECOND STEP, ADJUSTING TO A TEMPERATURE OF 20 TO 70*C., STIRRING, INTRODUCING CARBON MONOXIDE INTO THE AQUEOUS MIXTURE OF SULFIDE CONTAINING METALLIC NICKEL TO PUT THE ENCLOSED VESSEL UNDER A TOTAL PRESSURE OF 30 TO 70 ATM. AMD CONTINUING STIRRING AND HEATING UNTIL THE DESIRED AMOUNT OF NICKEL CARBONYL HAS FORMED.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-25 | 1966-08-27 | 1967-02-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-25 | 1970-08-27 | 1971-02-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-25 | 1974-08-27 | 1975-02-26 | $7700.00 | Window Closed / Lapsed |