US2526707A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of a cobalt salt from arseniferous ores
Assignee: Individual
•
Filing: 1946-09-17
•
Granted: 1950-10-24
•
Expires: 1966-09-17
Abstract
No abstract record available.
Inventors
- 👤 John C Stahl
- 👤 Francis K Shelton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:53
CPC Classifications
C; C22; C22B; C22B23/00; C22B23/04; C22B23/0407; C22B23/0415; C22B23/043
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A PROCESS FOR THE PRODUCTION OF A COBALT SALT FROM ARSENIFEROUS ORES THEREOF CONTAINING ALSO IRON, WHICH COMPRISES FIRST SUBJECTING SUCH AN ORE TO A REDUCING ROAST BELOW THE TEMPERATURE OF FUSION, THEN SUBJECTING THE ORE TO AN OXIDIZING ROAST AT A TEMPERATURE OF ABOUT 600*C. TO 700* C., THEREAFTER EXTRACTING THE THUS ROASTED ORE WITH A MINERAL ACID CAPABLE OF FORMING SOLUBLE COBALT SALTS AND HAVING A CONCENTRATION OF ABOUT 10 TO 20%, AND RECOVERING A PURIFIED COBALT SALT FROM THE RESULTING SOLUTION.
Claim 2
Dependent Claim
84 words
A PROCESS FOR THE PRODUCTION OF A COBALT SALT FROM ARSENIFEROUS ORES THEREOF CONTAINING ALSO IRON, WHICH COMPRISES FIRST SUBJECTING SUCH AN ORE TO A REDUCING ROAST BELOW THE TEMPERATURE OF FUSION, THEN SUBJECTING THE ORE TO AN OXIDIZING ROAST AT A TEMPERATURE OF ABOUT 600*C. TO 700* C., THEREAFTER EXTRACTING THE THUS ROASTED ORE WITH A MINERAL ACID CAPABLE OF FORMING SOLUBLE COBALT SALTS AND HAVING A CONCENTRATION OF ABOUT 10 TO 20%, AND RECOVERING A PURIFIED COBALT SALT FROM THE RESULTING SOLUTION.
References Cited (Backward Citations)
US1835878A
Cited
US1868414A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-23 | 1954-04-24 | 1954-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-23 | 1958-04-24 | 1958-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-23 | 1962-04-24 | 1962-10-24 | $7700.00 | Window Closed / Lapsed |