Patent US2569417A successfully refreshed from Google Patents.
US2569417A
Expired / Lapsed
US
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Beneficiation of acidic minerals
Assignee: Wyeth Holdings LLC
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Filing: 1948-03-10
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Granted: 1951-09-25
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Expires: 1968-03-10
Abstract
No abstract record available.
Inventors
- 👤 David W Jayne
- 👤 Harold M Day
- 👤 Elmer W Gieseke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 11:12
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/01; B03D1/008; B03D2201/00; B03D2201/02; B03D2203/00; B03D2203/02; B03D2203/04; B03D2203/06; Y; Y10; Y10S; Y10S209/00; Y10S209/902
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
74 words
IN THE BENEFICIATION OF THE ORES CONTAINING ACIDIC SILICIOUS MINERALS BY FLOATING A CONCENTRIC OF THE ACIDIC SILICIOUS MINERALS THEREFROM, THE IMPROVEMENT WHICH COMPRISES SUBJECTING AN AQUEOUS PULP OF THE ORE TO AGITATION AND AERATION IN THE PRESENCE OF AT LEAST ABOUT 0.2 LB. PER TON OF A COLLECTOR AND A RELATIVELY SMALL AMOUNT OF A NONSELECTIVE FROTHING AGENT, SAID COLLECTOR BEING SELECTED FROM THE GROUP CONSISTING OF THOSE COMPOUNDS REPRESENTED BY THE FORMULA:
Claim 2
Dependent Claim
74 words
IN THE BENEFICIATION OF THE ORES CONTAINING ACIDIC SILICIOUS MINERALS BY FLOATING A CONCENTRIC OF THE ACIDIC SILICIOUS MINERALS THEREFROM, THE IMPROVEMENT WHICH COMPRISES SUBJECTING AN AQUEOUS PULP OF THE ORE TO AGITATION AND AERATION IN THE PRESENCE OF AT LEAST ABOUT 0.2 LB. PER TON OF A COLLECTOR AND A RELATIVELY SMALL AMOUNT OF A NONSELECTIVE FROTHING AGENT, SAID COLLECTOR BEING SELECTED FROM THE GROUP CONSISTING OF THOSE COMPOUNDS REPRESENTED BY THE FORMULA:
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) | 1954-09-24 | 1955-03-26 | 1955-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-09-24 | 1959-03-26 | 1959-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-09-24 | 1963-03-26 | 1963-09-25 | $7700.00 | Window Closed / Lapsed |