US3049233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for separation of schoenite from sodium chloride by means of flotation
Assignee: Montedison SpA
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Filing: 1960-02-02
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Granted: 1962-08-14
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Expires: 1980-02-02
Abstract
No abstract record available.
Inventors
- 👤 Marullo Gerlando
- 👤 Perri Giovanni
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 14:42
CPC Classifications
C; C01; C01D; C01D5/00; C01D5/12; B; B03; B03D; B03D1/00; B03D1/001; B03D1/004; B03D1/008; B03D1/01; C01D3/00; C01D3/04; C01D3/08; B03D2201/00; B03D2201/02; B03D2201/04; B03D2203/00; B03D2203/02; B03D2203/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
118 words
PROCESS FOR SEPARATION BY FLOTATION OF SCHOENITE, CONSISTING OF THE DOUBLE HYDRATED SALT OF POTASSIUM AND MAGNESIUM SULFATE, FROM NATURAL OR ARTIFICIALLY PREPARED MIXTURES OF SCHOENITE AND SODIUM CHLORIDE, COMPRISING THE STEPS OF ADDING TO A 25 TO 35% SUSPENSION OF SAID MIXTURE 100 TO 300 GRAMS PER TON OF A FIRST FLOTATION AGENT SELECTED FROM THE GROUP CONSISTING OF STRAIGHT-CHAIN ALIPHATIC ACIDS HAVING 7 TO 20 CARBON ATOMS AND SALTS OF SAID ACIDS, 100 TO 300 GRAMS PER TON OF A SECOND FLOTATION AGENT SELECTED FROM THE GROUP CONSISTING OF PRIMARY ALIPHATIC AMINES HAVING 6 TO 20 CARBON ATOMS AND SALTS OF SAID PRIMARY ALIPHATIC AMINES, AND 80 TO 100 GRAMS PER TON OF AN ALCOHOL FROTHER.
Claim 2
Dependent Claim
118 words
PROCESS FOR SEPARATION BY FLOTATION OF SCHOENITE, CONSISTING OF THE DOUBLE HYDRATED SALT OF POTASSIUM AND MAGNESIUM SULFATE, FROM NATURAL OR ARTIFICIALLY PREPARED MIXTURES OF SCHOENITE AND SODIUM CHLORIDE, COMPRISING THE STEPS OF ADDING TO A 25 TO 35% SUSPENSION OF SAID MIXTURE 100 TO 300 GRAMS PER TON OF A FIRST FLOTATION AGENT SELECTED FROM THE GROUP CONSISTING OF STRAIGHT-CHAIN ALIPHATIC ACIDS HAVING 7 TO 20 CARBON ATOMS AND SALTS OF SAID ACIDS, 100 TO 300 GRAMS PER TON OF A SECOND FLOTATION AGENT SELECTED FROM THE GROUP CONSISTING OF PRIMARY ALIPHATIC AMINES HAVING 6 TO 20 CARBON ATOMS AND SALTS OF SAID PRIMARY ALIPHATIC AMINES, AND 80 TO 100 GRAMS PER TON OF AN ALCOHOL FROTHER.
References Cited (Backward Citations)
US2297664A
Cited
US2766885A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-08-13 | 1966-02-12 | 1966-08-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-08-13 | 1970-02-12 | 1970-08-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-08-13 | 1974-02-12 | 1974-08-14 | $7700.00 | Window Closed / Lapsed |