US2570119A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Recovery of carnotite from its ores
Assignee: Individual
•
Filing: 1949-02-03
•
Granted: 1951-10-02
•
Expires: 1969-02-03
Abstract
No abstract record available.
Inventors
- 👤 Carl W Sawyer
- 👤 Mabel P Handley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 14:25
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/01; B03D1/008; B03D2203/00; B03D2203/02; B03D2203/04; B03D2203/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A PROCESS OF - RECOVERING CARNOTITE FROM ITS SILICEOUS ORES WHICH COMPRISES SUBJECTING SAID ORES TO FLOTATION IN THE PRESENCE OF A LONG CHAIN FATTY ACID CONTAINING AT LEAST 10 CARBON ATOMS AND A HIGH MOLECULAR WEIGHT PRIMARY ALIPHATIC AMINE REAGENT CONTAINING AT LEAST 8 CARBON ATOMS.
Claim 2
Dependent Claim
47 words
A PROCESS OF - RECOVERING CARNOTITE FROM ITS SILICEOUS ORES WHICH COMPRISES SUBJECTING SAID ORES TO FLOTATION IN THE PRESENCE OF A LONG CHAIN FATTY ACID CONTAINING AT LEAST 10 CARBON ATOMS AND A HIGH MOLECULAR WEIGHT PRIMARY ALIPHATIC AMINE REAGENT CONTAINING AT LEAST 8 CARBON ATOMS.
References Cited (Backward Citations)
US2014406A
Cited
US2000656A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-10-01 | 1955-04-02 | 1955-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-10-01 | 1959-04-02 | 1959-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-10-01 | 1963-04-02 | 1963-10-02 | $7700.00 | Window Closed / Lapsed |