US2696912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Concentrating or separating of the values from soluble ores
Assignee: Duval Sulphur and Potash Co
•
Filing: 1953-02-02
•
Granted: 1954-12-14
•
Expires: 1973-02-02
Abstract
No abstract record available.
Inventors
- 👤 George E Atwood
- 👤 Douglas J Bourne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:31
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/016; B03D1/01; B03D2203/00; B03D2203/02; B03D2203/04; B03D2203/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
53 words
THE IMPROVEMENT IN THE METHOD OF SEPARATING VALUABLE CONSTITUENTS FROM POTASSIUM ORES WHICH COMPRISES SUBJECTING THE ORE TO A CONCENTRATING PROCESS EMPLOYING A MINERAL COLLECTOR, SAID IMPROVEMENT RESIDING IN, DISTRIBUTING IN SAID ORE DURING THE CONCENTRATING PROCESS A USEFUL AMOUNT OF AN AUXILIARY REAGENT WHICH IS A POLYMER CONSISTING PRINCIPALLY OF MANNOSE UNITS.
Claim 2
Dependent Claim
53 words
THE IMPROVEMENT IN THE METHOD OF SEPARATING VALUABLE CONSTITUENTS FROM POTASSIUM ORES WHICH COMPRISES SUBJECTING THE ORE TO A CONCENTRATING PROCESS EMPLOYING A MINERAL COLLECTOR, SAID IMPROVEMENT RESIDING IN, DISTRIBUTING IN SAID ORE DURING THE CONCENTRATING PROCESS A USEFUL AMOUNT OF AN AUXILIARY REAGENT WHICH IS A POLYMER CONSISTING PRINCIPALLY OF MANNOSE UNITS.
References Cited (Backward Citations)
US2317413A
Cited
US2341046A
Cited
US2288497A
Cited
US2322789A
Cited
US2355365A
Cited
US2365805A
Cited
US2364520A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-12-13 | 1958-06-14 | 1958-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-12-13 | 1962-06-14 | 1962-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-12-13 | 1966-06-14 | 1966-12-14 | $7700.00 | Window Closed / Lapsed |