Patent US2665004A successfully refreshed from Google Patents.
US2665004A
Expired / Lapsed
US
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Process for treating froth flotation concentrates
Assignee: Individual
•
Filing: 1949-04-11
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Granted: 1954-01-05
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Expires: 1969-04-11
Abstract
No abstract record available.
Inventors
- 👤 Albert W Zukosky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:14
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
50 words
IN FROTH FLOTATION CONCENTRATION OPERATIONS, THE IMPROVEMENTS WHICH CONSIST IN TREATING AN AMINE-CONTAINING PULP OF MICACEOUS AND FELDSPATHIC CONCENTRATES CONTAINING RESIDUAL AMINECONTAINING FLOTATION REAGENTS WITH BENTONITE FOR FREEING THE CONCENTRATES FROM THE RESIDUAL REAGENTS, AND AGITATING THE BENTONITE AND PULP UNTIL THE AMINE-CONTAINING FLOTATION REAGENTS ARE SEPARATED FROM THE CONCENTRATES.
References Cited (Backward Citations)
US1261810A
Cited
US2165607A
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US2317139A
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US2249570A
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US2293640A
Cited
US2367122A
Cited
US2369311A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-01-04 | 1957-07-06 | 1958-01-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-01-04 | 1961-07-06 | 1962-01-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-01-04 | 1965-07-06 | 1966-01-05 | $7700.00 | Window Closed / Lapsed |