US3145163A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Beneficiation of potash ores
Assignee: International Minerals and Chemical Corp
•
Filing: 1960-10-03
•
Granted: 1964-08-18
•
Expires: 1980-10-03
Abstract
No abstract record available.
Inventors
- 👤 William B Dancy
- 👤 Clarence E Pressnell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 03:12
CPC Classifications
C; C01; C01D; C01D3/00; C01D3/04; C01D3/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
A PROCESS FOR BENEFICIATING A POTASH ORE WHICH COMPRISES DRY SIZING SUBSTANTIALLY UNCOMMINUTED MINE RUN POTASH ORE OF SUBSTANTIALLY -5 INCH SIZE TO SEPARATE OUT A SUBSTANTIALLY -6 + 20 MESH GRANULAR FLOTATION FEED FRACTION AND OTHER FRACTIONS, SEPARATELY FROM SAID OTHER FRACTIONS AND FROM COMMINUTED ORE, CONDITIONING SAID GRAN-
Claim 2
Dependent Claim
50 words
A PROCESS FOR BENEFICIATING A POTASH ORE WHICH COMPRISES DRY SIZING SUBSTANTIALLY UNCOMMINUTED MINE RUN POTASH ORE OF SUBSTANTIALLY -5 INCH SIZE TO SEPARATE OUT A SUBSTANTIALLY -6 + 20 MESH GRANULAR FLOTATION FEED FRACTION AND OTHER FRACTIONS, SEPARATELY FROM SAID OTHER FRACTIONS AND FROM COMMINUTED ORE, CONDITIONING SAID GRAN-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-18 | 1968-02-17 | 1968-08-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-18 | 1972-02-17 | 1972-08-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-18 | 1976-02-17 | 1976-08-18 | $7700.00 | Window Closed / Lapsed |