US2608531A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic preparation of manganese dioxide
Assignee: REGINALD S DEAN
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Filing: 1949-11-02
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Granted: 1952-08-26
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Expires: 1969-11-02
Abstract
No abstract record available.
Inventors
- 👤 Abraham L Fox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:59
CPC Classifications
C; C25; C25B; C25B1/00; C25B1/01; C25B1/21; H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/48; H01M4/50; Y; Y02; Y02E; Y02E60/00; Y02E60/10; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2918; Y10T428/292; Y10T428/31504; Y10T428/31678
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
79 words
PROCESS OF PREPARING ELECTROLYTIC MANGANESE DIOXIDE HAVING GOOD DEPOLARIZING PROPERTIES IN A DRY CELL WHICH COMPRISES PASSING A UNIDIRECTIONAL CURRENT THROUGH AN ELECTROLYTE CONSISTING ESSENTIALLY OF WATER, MANGANESE SULPHATE AND SULPHURIC ACID FROM A METALLIC CONDUCTING CATHODE TO A POROUS ANODE CONSISTING ESSENTIALLY OF TITANIUM PARTICLES COMPACTED INTO A COHERENT BUT INCOMPLETELY CONSOLIDATED POROUS MASS HAVING A LARGE SURFACE AREA WHEREBY TO FORM A DEPOSIT OF ELECTROLYTIC MNO2 ON THE ANODE, AND SEPARATING THE DEPOSITED MNO2 FROM THE ANODE.
Claim 2
Dependent Claim
79 words
PROCESS OF PREPARING ELECTROLYTIC MANGANESE DIOXIDE HAVING GOOD DEPOLARIZING PROPERTIES IN A DRY CELL WHICH COMPRISES PASSING A UNIDIRECTIONAL CURRENT THROUGH AN ELECTROLYTE CONSISTING ESSENTIALLY OF WATER, MANGANESE SULPHATE AND SULPHURIC ACID FROM A METALLIC CONDUCTING CATHODE TO A POROUS ANODE CONSISTING ESSENTIALLY OF TITANIUM PARTICLES COMPACTED INTO A COHERENT BUT INCOMPLETELY CONSOLIDATED POROUS MASS HAVING A LARGE SURFACE AREA WHEREBY TO FORM A DEPOSIT OF ELECTROLYTIC MNO2 ON THE ANODE, AND SEPARATING THE DEPOSITED MNO2 FROM THE ANODE.
References Cited (Backward Citations)
US2424958A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-26 | 1956-02-25 | 1956-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-26 | 1960-02-25 | 1960-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-26 | 1964-02-25 | 1964-08-26 | $7700.00 | Window Closed / Lapsed |