US3017028A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clay depressant
Assignee: Potash Corp of Saskatchewan Inc
•
Filing: 1959-01-12
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Granted: 1962-01-16
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Expires: 1979-01-12
Abstract
No abstract record available.
Inventors
- 👤 Edmund A Schoeld
- 👤 Clarence W Egbom
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:35
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/016; B03D1/008; B03D1/01; B03D2201/00; B03D2201/06; B03D2203/00; B03D2203/02; B03D2203/04; B03D2203/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
THE IMPROVEMENT IN THE METHOD OF SEPARATING VALUABLE CONSITUENTS FROM POTASSIUM BEARING ORES INCLUDING SUBJECTING SUCH AN 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 WATER SOLUBLE, INTERMEDIATE STAGE CONDENSATION RESIN OF A CARBAMIDE COMPOUND AND A LOWER MOLECULAR WEIGHT ALDEHYDE.
Claim 2
Dependent Claim
64 words
THE IMPROVEMENT IN THE METHOD OF SEPARATING VALUABLE CONSITUENTS FROM POTASSIUM BEARING ORES INCLUDING SUBJECTING SUCH AN 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 WATER SOLUBLE, INTERMEDIATE STAGE CONDENSATION RESIN OF A CARBAMIDE COMPOUND AND A LOWER MOLECULAR WEIGHT ALDEHYDE.
References Cited (Backward Citations)
US2740522A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-01-15 | 1965-07-17 | 1966-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-01-15 | 1969-07-17 | 1970-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-01-15 | 1973-07-17 | 1974-01-16 | $7700.00 | Window Closed / Lapsed |