Patent US2636604A successfully refreshed from Google Patents.
US2636604A
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Flotation of pyrites from a pyrite ore pulp
Assignee: Bethlehem Steel Corp
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Filing: 1949-06-17
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Granted: 1953-04-28
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Expires: 1969-06-17
Abstract
No abstract record available.
Inventors
- 👤 Anderson Arvid Emil
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 09:20
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/012; B03D1/008; B03D2201/00; B03D2201/02; B03D2201/04; B03D2203/00; B03D2203/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
34 words
A METHOD OF RECOVERING PYRITES FROM A PYRITE ORE PULP WHICH COMPRISES ADDING TO THE PULP AN EMULSION OF A XANTHATE, PINE OIL, AND SODIUM RESINATE, AND SUBJECTING THE PULP TO A FLOTATION OPERATION.
Claim 2
Independent Claim
34 words
A METHOD OF RECOVERING PYRITES FROM A PYRITE ORE PULP WHICH COMPRISES ADDING TO THE PULP AN EMULSION OF A XANTHATE, PINE OIL, AND SODIUM RESINATE, AND SUBJECTING THE PULP TO A FLOTATION OPERATION.
References Cited (Backward Citations)
US1547732A
Cited
US1554216A
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US1992949A
Cited
US2116727A
Cited
US2259420A
Cited
US2286374A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-04-27 | 1956-10-27 | 1957-04-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-04-27 | 1960-10-27 | 1961-04-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-04-27 | 1964-10-27 | 1965-04-28 | $7700.00 | Window Closed / Lapsed |