US3128248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for the purification of brine
Assignee: Ebara Corp
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Filing: 1962-01-22
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Granted: 1964-04-07
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Expires: 1982-01-22
Abstract
No abstract record available.
Inventors
- 👤 Suzuki Hidetomo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 20:53
CPC Classifications
C; C02; C02F; C02F5/00; C02F5/02; C02F1/00; C02F1/02; C02F1/24; C02F1/52; C02F1/66; C02F2103/00; C02F2103/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
IN A METHOD FOR REMOVING MAGNESIUM AND CALCIUM IONS FROM BRINE AND SEA WATER BY CONVERSION INTO MAGNESIUM HYDROXIDE AND CALCIUM CARBONATE PRECIPITATES AFTER TREATMENT WITH SODIUM HYDROXIDE, SODIUM CARBONATE AND SLAKED LIME, THAT IMPROVEMENT IN THE CLARIFICATION OF THE SEA WATER AND BRINE BEING TREATED WHICH COMPRISES: ADJUSTING THE TEMPERATURE OF THE WATER TO FROM 50-100*C.; INTRODUCING AIR UNDER PRESSURE INTO THE WATER AFTER IT IS TREATED WITH THE AFORESAID ALKALINE TREATING REAGENT WHEREBY BUBBLES OF AIR RISE TO THE SURFACE OF THE WATER AND ENTRAIN THE FINELY DIVIDED PARTICLES OF PRECIPITATED MAGNESIUM HYDROXIDE AND CALCIUM CARBONATE; SIMULTANEOUSLY INTRODUCING FROM 1 TO 100 PARTS PER MILLION, BASED UPON THE WEIGHT OF THE PRECIPITATES, OF A COAGULANT SELECTED FROM THE GROUP CONSISTING OF OIL, SOAP AND POLYELECTROLYTE; AND THEREAFTER REMOVING THE ENTRAINED SOLIDS FROM THE TOP OF THE WATER.
Claim 2
Dependent Claim
139 words
IN A METHOD FOR REMOVING MAGNESIUM AND CALCIUM IONS FROM BRINE AND SEA WATER BY CONVERSION INTO MAGNESIUM HYDROXIDE AND CALCIUM CARBONATE PRECIPITATES AFTER TREATMENT WITH SODIUM HYDROXIDE, SODIUM CARBONATE AND SLAKED LIME, THAT IMPROVEMENT IN THE CLARIFICATION OF THE SEA WATER AND BRINE BEING TREATED WHICH COMPRISES: ADJUSTING THE TEMPERATURE OF THE WATER TO FROM 50-100*C.; INTRODUCING AIR UNDER PRESSURE INTO THE WATER AFTER IT IS TREATED WITH THE AFORESAID ALKALINE TREATING REAGENT WHEREBY BUBBLES OF AIR RISE TO THE SURFACE OF THE WATER AND ENTRAIN THE FINELY DIVIDED PARTICLES OF PRECIPITATED MAGNESIUM HYDROXIDE AND CALCIUM CARBONATE; SIMULTANEOUSLY INTRODUCING FROM 1 TO 100 PARTS PER MILLION, BASED UPON THE WEIGHT OF THE PRECIPITATES, OF A COAGULANT SELECTED FROM THE GROUP CONSISTING OF OIL, SOAP AND POLYELECTROLYTE; AND THEREAFTER REMOVING THE ENTRAINED SOLIDS FROM THE TOP OF THE WATER.
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) | 1967-04-07 | 1967-10-07 | 1968-04-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-04-07 | 1971-10-07 | 1972-04-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-04-07 | 1975-10-07 | 1976-04-07 | $7700.00 | Window Closed / Lapsed |