Patent US1948119A successfully refreshed from Google Patents.
Patent US2596407A successfully refreshed from Google Patents.
US2596407A
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Concentration of nonmetallic minerals by flotation
Assignee: International Minerals and Chemical Corp
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Filing: 1949-03-22
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Granted: 1952-05-13
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Expires: 1969-03-22
Abstract
No abstract record available.
Inventors
- 👤 Richard I Jackson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:57
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/02; B03D1/021; B03D1/08; B03D1/085; Y; Y10; Y10S; Y10S209/00; Y10S209/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
IN A PROCESS FOR THE FLOTATION CONCENTRATION OF NONMETALLIC ORE, THE IMPROVEMENTS COMPRISING DIVIDING SAID ORE INTO AT LEAST TWO FRACTIONS, ONE OF WHICH IS OF RELATIVELY LARGE PARTICELS AND THE OTHER OF WHICH IS OF RELATIVELY SMALL PARTICLES, PREPARING AN AQUEOUS HIGH SOLIDS PULP OF LARGE PARTICLED MATERIAL, CONDITIONING THE LATTER WITH REAGENT HAVING AN AFFINITY FOR THE MINERAL VALUE IN SAID ORE, SUBSEQUENTLY ADDING THE UNREAGENTIZED SMALL PARTICLED MATERIAL TO THE PULP CONDITIONED FOR FLOTATION AND PRIOR TO SUBJECTING THE PULP TO ANY FLOTATION, CONDITIONING THE RESULTING MIXTURE, AND THEN INITIALLY SUBJECTING THE CONDITIONED PULP OF THE COMBINED ORE FRACTIONS TO FLOTATION.
Claim 2
Dependent Claim
104 words
IN A PROCESS FOR THE FLOTATION CONCENTRATION OF NONMETALLIC ORE, THE IMPROVEMENTS COMPRISING DIVIDING SAID ORE INTO AT LEAST TWO FRACTIONS, ONE OF WHICH IS OF RELATIVELY LARGE PARTICELS AND THE OTHER OF WHICH IS OF RELATIVELY SMALL PARTICLES, PREPARING AN AQUEOUS HIGH SOLIDS PULP OF LARGE PARTICLED MATERIAL, CONDITIONING THE LATTER WITH REAGENT HAVING AN AFFINITY FOR THE MINERAL VALUE IN SAID ORE, SUBSEQUENTLY ADDING THE UNREAGENTIZED SMALL PARTICLED MATERIAL TO THE PULP CONDITIONED FOR FLOTATION AND PRIOR TO SUBJECTING THE PULP TO ANY FLOTATION, CONDITIONING THE RESULTING MIXTURE, AND THEN INITIALLY SUBJECTING THE CONDITIONED PULP OF THE COMBINED ORE FRACTIONS TO FLOTATION.
References Cited (Backward Citations)
US1346819A
Cited
US1459167A
Cited
US2156245A
Cited
US2387856A
Cited
US2357419A
Cited
US2369311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-05-13 | 1955-11-12 | 1956-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-05-13 | 1959-11-12 | 1960-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-05-13 | 1963-11-12 | 1964-05-13 | $7700.00 | Window Closed / Lapsed |