US2607486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Iron oxide flotation process
Assignee: Armour and Co
•
Filing: 1946-08-30
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Granted: 1952-08-19
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Expires: 1966-08-30
Abstract
No abstract record available.
Inventors
- 👤 Jr James A Barr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:54
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/012; B03D2201/00; B03D2201/02; B03D2203/00; B03D2203/02; B03D2203/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
IN A PROCESS FOR THE SEPARATION OF IRON OXIDE FROM SILICEOUS GANGUE MINERALS IN A FLOTATION OPERATION, THE STEPS, OF SUBJECTING THE GROUND MINERALS IN WATER TO THE ACTION OF A COLLECTOR SELECTED FROM THE GROUP CONSISTING OF SULFONATED AND SULFATED TALL OIL FRACTIONS HAVING A CONTENT OF LINOLEIC ACID GREATER THAN THAT OCCURRING NATURALLY IN TALL OIL, AND FROM WHICH THE BULK OF THE ABIETIC ACID HAS BEEN REMOVED.
Claim 2
Dependent Claim
70 words
IN A PROCESS FOR THE SEPARATION OF IRON OXIDE FROM SILICEOUS GANGUE MINERALS IN A FLOTATION OPERATION, THE STEPS, OF SUBJECTING THE GROUND MINERALS IN WATER TO THE ACTION OF A COLLECTOR SELECTED FROM THE GROUP CONSISTING OF SULFONATED AND SULFATED TALL OIL FRACTIONS HAVING A CONTENT OF LINOLEIC ACID GREATER THAN THAT OCCURRING NATURALLY IN TALL OIL, AND FROM WHICH THE BULK OF THE ABIETIC ACID HAS BEEN REMOVED.
References Cited (Backward Citations)
US2385054A
Cited
US2414714A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-08-19 | 1956-02-18 | 1956-08-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-19 | 1960-02-18 | 1960-08-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-19 | 1964-02-18 | 1964-08-19 | $7700.00 | Window Closed / Lapsed |