US2765077A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Froth flotation of astrakanite
Assignee: SALITRERA ANGLO LAUTA Cia
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Filing: 1952-11-15
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Granted: 1956-10-02
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Expires: 1972-11-15
Abstract
No abstract record available.
Inventors
- 👤 Lockwood W Ferris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 11:47
CPC Classifications
B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/008; B03D2203/00; B03D2203/02; B03D2203/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
THE METHOD OF SEPARATING ASTRAKANITE FROM SODIUM CHLORIDE CONTAINED IN A SOLID PRODUCT CONSISTING ESSENTIALLY OF ASTRAKANITE AND SODIUM CHLORIDE WHICH COMPRISES SUBJECTING THE PRODUCT IN THE FORM OF AN AQUEOUS PULP SATURATED WITH RESPECT TO THE COMPONENTS OF THE PRODUCT AND CONTAINING SOLID FINELY DIVIDED PARTICLES OF THE PRODUCT SUSPENDED THEREIN TO A FROTH FLOTATION OPERATION IN THE PRESENCE OF ONE OR MORE ALKALI METAL SALTS OF ONE OR MORE ACIDS OF THE NAPHTHENIC ACID GROUP TO PRODUCE AN ASTRAKANITE CONCENTRATE IN THE FORM OF A FROTH AND A SODIUM CHLORIDE CONCENTRATE DISPERSED IN THE FLOTATION PULP, AND SEPARATING THE FROTH FROM THE FLOTATION PULP.
Claim 2
Independent Claim
106 words
THE METHOD OF SEPARATING ASTRAKANITE FROM SODIUM CHLORIDE CONTAINED IN A SOLID PRODUCT CONSISTING ESSENTIALLY OF ASTRAKANITE AND SODIUM CHLORIDE WHICH COMPRISES SUBJECTING THE PRODUCT IN THE FORM OF AN AQUEOUS PULP SATURATED WITH RESPECT TO THE COMPONENTS OF THE PRODUCT AND CONTAINING SOLID FINELY DIVIDED PARTICLES OF THE PRODUCT SUSPENDED THEREIN TO A FROTH FLOTATION OPERATION IN THE PRESENCE OF ONE OR MORE ALKALI METAL SALTS OF ONE OR MORE ACIDS OF THE NAPHTHENIC ACID GROUP TO PRODUCE AN ASTRAKANITE CONCENTRATE IN THE FORM OF A FROTH AND A SODIUM CHLORIDE CONCENTRATE DISPERSED IN THE FLOTATION PULP, AND SEPARATING THE FROTH FROM THE FLOTATION PULP.
References Cited (Backward Citations)
US2222332A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-10-02 | 1960-04-02 | 1960-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-10-02 | 1964-04-02 | 1964-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-10-02 | 1968-04-02 | 1968-10-02 | $7700.00 | Window Closed / Lapsed |