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Patent US2758012A successfully refreshed from Google Patents.
US2758012A
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Treating oxidized manganese carbonate products
Assignee: Manganese Chemicals Corp
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Filing: 1954-06-07
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Granted: 1956-08-07
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Expires: 1974-06-07
Abstract
No abstract record available.
Inventors
- 👤 Jay Y Welsh
- 👤 Russell A Holmes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:27
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
129 words
IN THE PROCESS OF OXIDIZING PRECIPITATED MANGANESE CARBONATE TO A MANGANESE DIOXIDE-CONTAINING PRODUCT HAVING DEPOLARIZING PROPERTIES INVOLVING THE STEP OF HEATING THE CARBONATE FOR AT LEAST 6 HOURS, IN AIR CONTAINING WATER VAPOR AND FROM ABOUT 3 TO ABOUT 10% OF CARBON DIOXIDE, AT A TEMPERATUTE OF FROM ABOUT 500* TO ABOUT 550* F. THEREBY PRODUCING AN OXIDIZING PRODUCT CONTAINING IN EXCESS OF 50% AND UP TO ABOUT 85% OF AVAILABLE OXYGEN, THE IMPROVEMENT WHICH CONSISTS IN EXPOSING SAID OXIDIZED PRODUCT FOR AT LEAST 2 HOURS TO AN ATMOSPHERE OF AIR IN EQUILIBRIUM WITH WATER AT A TEMPERATURE OF FROM ABOUT 190* TO ABOUT 200* F, AND HEATING THE SO-TREATED PRODUCT IN AIR FOR AT LEAST 3 HOURS AT A TEMPERATURE OF FROM ABOUT 250* TO ABOUT 400* F.
Claim 2
Dependent Claim
129 words
IN THE PROCESS OF OXIDIZING PRECIPITATED MANGANESE CARBONATE TO A MANGANESE DIOXIDE-CONTAINING PRODUCT HAVING DEPOLARIZING PROPERTIES INVOLVING THE STEP OF HEATING THE CARBONATE FOR AT LEAST 6 HOURS, IN AIR CONTAINING WATER VAPOR AND FROM ABOUT 3 TO ABOUT 10% OF CARBON DIOXIDE, AT A TEMPERATUTE OF FROM ABOUT 500* TO ABOUT 550* F. THEREBY PRODUCING AN OXIDIZING PRODUCT CONTAINING IN EXCESS OF 50% AND UP TO ABOUT 85% OF AVAILABLE OXYGEN, THE IMPROVEMENT WHICH CONSISTS IN EXPOSING SAID OXIDIZED PRODUCT FOR AT LEAST 2 HOURS TO AN ATMOSPHERE OF AIR IN EQUILIBRIUM WITH WATER AT A TEMPERATURE OF FROM ABOUT 190* TO ABOUT 200* F, AND HEATING THE SO-TREATED PRODUCT IN AIR FOR AT LEAST 3 HOURS AT A TEMPERATURE OF FROM ABOUT 250* TO ABOUT 400* F.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-08-07 | 1960-02-06 | 1960-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-08-07 | 1964-02-06 | 1964-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-08-07 | 1968-02-06 | 1968-08-07 | $7700.00 | Window Closed / Lapsed |