US2763371A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ore dressing process
Assignee: Individual
•
Filing: 1952-06-10
•
Granted: 1956-09-18
•
Expires: 1972-06-10
Abstract
No abstract record available.
Inventors
- 👤 Baron Ira Milton Le
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:33
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/02; B03D1/021
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
57 words
A PROCESS OF BENEFICIATING THE LEACHED ZONE PORTION OF THE OVERBURNDEN OF FLORIDE PEBBLE PHOSPHATE MATRIX WHICH COMPRISES SLURRYING SAID LEACHED ZONE MATERIAL WITH WATER, SEPARATING THE PEBBLE FROM THE SLURRY, SUBJECTING THE PEBBLE-FREE SLURRY TO HYDROCLASSIFICATION TO SEPARATE A LARGE PARTICLE FRACTION AS A SLURRY UNDERFLOW AND A SMALL PARTICLE FRACTION AS A SLURRY OVERFLOW WHOSE
Claim 2
Dependent Claim
57 words
A PROCESS OF BENEFICIATING THE LEACHED ZONE PORTION OF THE OVERBURNDEN OF FLORIDE PEBBLE PHOSPHATE MATRIX WHICH COMPRISES SLURRYING SAID LEACHED ZONE MATERIAL WITH WATER, SEPARATING THE PEBBLE FROM THE SLURRY, SUBJECTING THE PEBBLE-FREE SLURRY TO HYDROCLASSIFICATION TO SEPARATE A LARGE PARTICLE FRACTION AS A SLURRY UNDERFLOW AND A SMALL PARTICLE FRACTION AS A SLURRY OVERFLOW WHOSE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-09-18 | 1960-03-19 | 1960-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-09-18 | 1964-03-19 | 1964-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-09-18 | 1968-03-19 | 1968-09-18 | $7700.00 | Window Closed / Lapsed |