US2755241A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrowinning of manganese
Assignee: Union Carbide Corp
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Filing: 1952-07-28
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Granted: 1956-07-17
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Expires: 1972-07-28
Abstract
No abstract record available.
Inventors
- 👤 Glen D Bagley
- 👤 Michael C Carosella
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:15
CPC Classifications
C; C25; C25C; C25C1/00; C25C1/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A PROCESS FOR THE ELECTROWINNING OF MANGANESE FROM AN AQUEOUS SOLUTION OF A MANGANESE AND AMMONIUM MINERAL SALT IN A DIAPHRAGM CELL COMPRISING ELECTROLYTICALLY DEPOSITING METALLIC MANGANESE FROM SAID AQUEOUS SOLUTION ON AT LEAST ONE THIN ALLOY SHEET CATHODE HAVING ROLLED, ANNEALED, POLISHED, DEGREASED SURFACES AND CONTAINING 10 PER CENT TO 25 PER CENT CHROMINUM, 0.5 PER CENT WOLFRAM, 4 PER CENT TO 25 PER CENT IRON, 2 PER CENT TO 20 PER CENT MOLYBDENUM, AND 20 PER CENT TO 83.5 PER CENT NICKEL; REMOVING SAID CATHODE FROM SAID CELL AND REMOVING SAID DEPOSITED METALLIC MANGANESE FROM SAID CATHODE; AND RETURNING SAID CATHODE TO SAID CELL FOR FURTHER DEPOSITION OF METALLIC MANGANESE.
Claim 2
Dependent Claim
112 words
A PROCESS FOR THE ELECTROWINNING OF MANGANESE FROM AN AQUEOUS SOLUTION OF A MANGANESE AND AMMONIUM MINERAL SALT IN A DIAPHRAGM CELL COMPRISING ELECTROLYTICALLY DEPOSITING METALLIC MANGANESE FROM SAID AQUEOUS SOLUTION ON AT LEAST ONE THIN ALLOY SHEET CATHODE HAVING ROLLED, ANNEALED, POLISHED, DEGREASED SURFACES AND CONTAINING 10 PER CENT TO 25 PER CENT CHROMINUM, 0.5 PER CENT WOLFRAM, 4 PER CENT TO 25 PER CENT IRON, 2 PER CENT TO 20 PER CENT MOLYBDENUM, AND 20 PER CENT TO 83.5 PER CENT NICKEL; REMOVING SAID CATHODE FROM SAID CELL AND REMOVING SAID DEPOSITED METALLIC MANGANESE FROM SAID CATHODE; AND RETURNING SAID CATHODE TO SAID CELL FOR FURTHER DEPOSITION OF METALLIC MANGANESE.
References Cited (Backward Citations)
US2325660A
Cited
US2495457A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-07-17 | 1960-01-16 | 1960-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-07-17 | 1964-01-16 | 1964-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-07-17 | 1968-01-16 | 1968-07-17 | $7700.00 | Window Closed / Lapsed |