US2716078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for treating activated manganese dioxide
Assignee: Olin Corp
•
Filing: 1953-03-24
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Granted: 1955-08-23
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Expires: 1973-03-24
Abstract
No abstract record available.
Inventors
- 👤 Jay Y Welsh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:34
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/36; H01M4/48; H01M4/50; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
THE METHOD OF STABILIZING ACTIVATED MANAGANESE DIOXIDE TO INCREASE ITS STABILITY WHEN USED AS THE DEPOLARIZER OF A DRY CELL WHICH COMPRISES SUBJECTING THE MATERIAL TO A TEMPERATURE OF SUBSTANTIALLY 90* C. TO 150* C. FOR A PERIOD VARYING FROM 72 HOURS TO 1 HOUR, THE PERIOD OF TIME DECREASING AS THE TEMPERATURE INCREASES IN AN AQUEOUS SOLUTION CONTAINING ZINC CHLORIDE.
Claim 2
Independent Claim
61 words
THE METHOD OF STABILIZING ACTIVATED MANAGANESE DIOXIDE TO INCREASE ITS STABILITY WHEN USED AS THE DEPOLARIZER OF A DRY CELL WHICH COMPRISES SUBJECTING THE MATERIAL TO A TEMPERATURE OF SUBSTANTIALLY 90* C. TO 150* C. FOR A PERIOD VARYING FROM 72 HOURS TO 1 HOUR, THE PERIOD OF TIME DECREASING AS THE TEMPERATURE INCREASES IN AN AQUEOUS SOLUTION CONTAINING ZINC CHLORIDE.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-08-22 | 1959-02-21 | 1959-08-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-08-22 | 1963-02-21 | 1963-08-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-08-22 | 1967-02-21 | 1967-08-23 | $7700.00 | Window Closed / Lapsed |