Patent US2867570A successfully refreshed from Google Patents.
US2867570A
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Devices for producing manganese dioxide by electrolysis
Assignee: CARTOUCHERIE FRANCAISE SA
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Filing: 1955-10-11
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Granted: 1959-01-06
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Expires: 1975-10-11
Abstract
No abstract record available.
Inventors
- 👤 Dufour Rene
- 👤 Verron Marcel
- 👤 Magoarou Alphonse Gabriel Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:11
CPC Classifications
C; C25; C25B; C25B1/00; C25B1/01; C25B1/21; C25B9/00; C25B9/13; C25B9/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
103 words
A DEVICE FOR MANUFACTURING MANGANESE DIOXIDE BY ELECTROLYSIS, COMPRISING A TANK UNIT ADAPTED TO RECEIVE AN ELECTROLYTE CONSTITUTED BY A MANGANESE SALT AND SUBDIVIDED, BY AT LEAST ONE DIAPHRAGM, INTO ONE ANODIC COMPARTMENT WITH AT LEAST ONE ANODE AND ONE CATHODIC COMPARTMENT WITH AT LEAST ONE CATHODE LOCATED BELOW SAID ANODIC COMPARTMENT, EACH CATHODE COMPRISING A GRANULATED MASS OF NATIVE MANGANESE DIOXIDE AND AT LEAST ONE PERFORATED ELECTRICALLY CONDUCTING SHEET SUPPORTING SAID MASS OF MANGANESE DIOXIDE; MEANS FOR WITHDRAWING ELECTROLYTE FROM SAID CATHODIC COMPARTMENT AND FOR ADDING THERETO A MANGANESE COMPOUND, AND MEANS FOR THEREAFTER DELIVERING SAID WITHDRAWN ELECTROLYTE INTO SAID ANODIC COMPARTMENT.
Claim 2
Independent Claim
103 words
A DEVICE FOR MANUFACTURING MANGANESE DIOXIDE BY ELECTROLYSIS, COMPRISING A TANK UNIT ADAPTED TO RECEIVE AN ELECTROLYTE CONSTITUTED BY A MANGANESE SALT AND SUBDIVIDED, BY AT LEAST ONE DIAPHRAGM, INTO ONE ANODIC COMPARTMENT WITH AT LEAST ONE ANODE AND ONE CATHODIC COMPARTMENT WITH AT LEAST ONE CATHODE LOCATED BELOW SAID ANODIC COMPARTMENT, EACH CATHODE COMPRISING A GRANULATED MASS OF NATIVE MANGANESE DIOXIDE AND AT LEAST ONE PERFORATED ELECTRICALLY CONDUCTING SHEET SUPPORTING SAID MASS OF MANGANESE DIOXIDE; MEANS FOR WITHDRAWING ELECTROLYTE FROM SAID CATHODIC COMPARTMENT AND FOR ADDING THERETO A MANGANESE COMPOUND, AND MEANS FOR THEREAFTER DELIVERING SAID WITHDRAWN ELECTROLYTE INTO SAID ANODIC COMPARTMENT.
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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) | 1962-01-05 | 1962-07-07 | 1963-01-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-01-05 | 1966-07-07 | 1967-01-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-01-05 | 1970-07-07 | 1971-01-06 | $7700.00 | Window Closed / Lapsed |