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Patent US2512669A successfully refreshed from Google Patents.
US2512669A
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US
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Flotation process
Assignee: Beazer East Inc
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Filing: 1948-08-04
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Granted: 1950-06-27
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Expires: 1968-08-04
Abstract
No abstract record available.
Inventors
- 👤 Morrow James Birney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:41
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/012; B03D1/002; B03D2201/00; B03D2201/007; B03D2201/02; B03D2203/00; B03D2203/02; B03D2203/025
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
IN THE CONCENTRATION OF SULFIDE ORES CONTAINING METALS SUCH AS LEAD, SILVER, ZINC, IRON AND GOLD, COMPRISING FLOATING OFF ZINC CONCENTRATES, AND TREATING THE ZINC TAILS WITH A POTASIUM AMYL XANTHATE TYPE COLLECTING AGENT AND AN ALKALI THIOCYANATE ACTIVATOR FOR IRON, AGITATING AND AERATING THE PULP TO FLOAT OFF IRON CONCENTRATE WITH ANY GOLD.
Claim 2
Dependent Claim
54 words
IN THE CONCENTRATION OF SULFIDE ORES CONTAINING METALS SUCH AS LEAD, SILVER, ZINC, IRON AND GOLD, COMPRISING FLOATING OFF ZINC CONCENTRATES, AND TREATING THE ZINC TAILS WITH A POTASIUM AMYL XANTHATE TYPE COLLECTING AGENT AND AN ALKALI THIOCYANATE ACTIVATOR FOR IRON, AGITATING AND AERATING THE PULP TO FLOAT OFF IRON CONCENTRATE WITH ANY GOLD.
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) | 1953-06-26 | 1953-12-26 | 1954-06-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-26 | 1957-12-26 | 1958-06-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-26 | 1961-12-26 | 1962-06-27 | $7700.00 | Window Closed / Lapsed |