Patent US2539823A successfully refreshed from Google Patents.
US2539823A
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Manganese ore treatment
Assignee: HEWITT S WEST
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Filing: 1949-11-22
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Granted: 1951-01-30
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Expires: 1969-11-22
Abstract
No abstract record available.
Inventors
- 👤 William H Furman
- 👤 Robert F Whitesides
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:42
CPC Classifications
C; C22; C22B; C22B47/00; C01; C01G; C01G45/00; C01G45/02; C01G45/022; C01G45/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
IN THE METHOD OF RECOVERING CONCENTRATED MANGANESE VALUES FROM ORES-BEARING MANGANESE IN AN INSOLUBLE FORM WITH A VALENCY GREATER THAN TWO, THE STEPS WHICH COMPRISES MIXING SAID ORE WITH A PETROLEUM OIL FROM THE GROUP CONSISTING OF CRUDE OIL, FUEL OIL AND LUBRICATING OIL, ADDING CONCENTRATED SULFURIC ACID TO THE MIXTURE, ALLOWING THE INGREDIENTS TO REACT, WHEREBY THE MANGANESE CONTENT OF THE ORE IS TRANSFORMED INTO MANGANESE SULFATE, AND RECOVERING MANGANOUS SULFATE FROM THE REACTION MIXTURE.
Claim 2
Dependent Claim
76 words
IN THE METHOD OF RECOVERING CONCENTRATED MANGANESE VALUES FROM ORES-BEARING MANGANESE IN AN INSOLUBLE FORM WITH A VALENCY GREATER THAN TWO, THE STEPS WHICH COMPRISES MIXING SAID ORE WITH A PETROLEUM OIL FROM THE GROUP CONSISTING OF CRUDE OIL, FUEL OIL AND LUBRICATING OIL, ADDING CONCENTRATED SULFURIC ACID TO THE MIXTURE, ALLOWING THE INGREDIENTS TO REACT, WHEREBY THE MANGANESE CONTENT OF THE ORE IS TRANSFORMED INTO MANGANESE SULFATE, AND RECOVERING MANGANOUS SULFATE FROM THE REACTION MIXTURE.
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) | 1954-01-29 | 1954-07-31 | 1955-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-01-29 | 1958-07-31 | 1959-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-01-29 | 1962-07-31 | 1963-01-30 | $7700.00 | Window Closed / Lapsed |