US2934419A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of treating sea water
Assignee: Dixie Chemical Co Inc
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Filing: 1955-09-19
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Granted: 1960-04-26
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Expires: 1975-09-19
Abstract
No abstract record available.
Inventors
- 👤 Cook Vernice
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:24
CPC Classifications
C; C05; C05D; C05D9/00; C05D9/02; C01; C01D; C01D3/00; C01D3/04; C01D3/06; C01F; C01F5/00; C01F5/14; C01F5/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
194 words
A METHOD FOR THE RECOVERY AND CONCENTRATION OF CHEMICAL ELEMENTS FROM A SAMPLE OF SEA WATER COMPRISING A SUBSTANTIAL AMOUNT OF SODIUM CHLORIDE AND MAGNESIUM AND CALCIUM IONS AND HAVING DISSOLVED AND SUSPENDED THEREIN AS TRACE ELEMENTS PHOSPHOROUS, ALUMINUM, STRONTIUM, SILICON, BORON, IRON, MANGANESE, NICKEL, COPPER AND TIN, COMPRISING THE STEPS OF ADDING TO THE SAMPLE OF SEA WATER A QUANTITY OF A MTERERIAL SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDROXIDE AND POTASSIUM HYDROXIDE, SAID MATERIAL HYDROLYZING IN SEA WATER AND YIELDING HYDROXYL IONS WHICH COMBINE WITH SAID MAGNESIUM TO FORM A MAGNESIUM HYDROXIDE PRECIPITATE, AND A MATERIAL SELECTED FROM THE GROUP CONSISTING OF SODIUM CARBONATE AND POTASSIUM CARBONATE, SAID LAST MENTIONED MATERIAL HYDROLYZING IN SAID SEA WATER AND YIELDING CARBONATE IONS WHICH COMBINE WITH THE CALCIUM IN THE SEA WATER TO FORM A CALCIUM CARBONATE PRECIPITATE, SAID MAGNESIUM HYDROXIDE AND CALCIUM CARBONATE PRECIPITATES ADSORBING A SUBSTANTIAL AMOUNT OF DISSOLVED AND SUSPENDED TRACE ELEMENTS IN THE SEA WATER AND ADSORBING AND ABSORBING SODIUM CHLORIDE, THEREAFTER SEPARATING SAID PRECIPTATES FROM SAID SEA WATER, THEN WASHING THE PRECIPITATES WITH FRESH WATER TO REMOVE SAID SODIUM CHLORIDE, AND THEN DRYING THE PRECIPITATES CONTAINING SAID TRACE ELEMENTS.
Claim 2
Independent Claim
194 words
A METHOD FOR THE RECOVERY AND CONCENTRATION OF CHEMICAL ELEMENTS FROM A SAMPLE OF SEA WATER COMPRISING A SUBSTANTIAL AMOUNT OF SODIUM CHLORIDE AND MAGNESIUM AND CALCIUM IONS AND HAVING DISSOLVED AND SUSPENDED THEREIN AS TRACE ELEMENTS PHOSPHOROUS, ALUMINUM, STRONTIUM, SILICON, BORON, IRON, MANGANESE, NICKEL, COPPER AND TIN, COMPRISING THE STEPS OF ADDING TO THE SAMPLE OF SEA WATER A QUANTITY OF A MTERERIAL SELECTED FROM THE GROUP CONSISTING OF SODIUM HYDROXIDE AND POTASSIUM HYDROXIDE, SAID MATERIAL HYDROLYZING IN SEA WATER AND YIELDING HYDROXYL IONS WHICH COMBINE WITH SAID MAGNESIUM TO FORM A MAGNESIUM HYDROXIDE PRECIPITATE, AND A MATERIAL SELECTED FROM THE GROUP CONSISTING OF SODIUM CARBONATE AND POTASSIUM CARBONATE, SAID LAST MENTIONED MATERIAL HYDROLYZING IN SAID SEA WATER AND YIELDING CARBONATE IONS WHICH COMBINE WITH THE CALCIUM IN THE SEA WATER TO FORM A CALCIUM CARBONATE PRECIPITATE, SAID MAGNESIUM HYDROXIDE AND CALCIUM CARBONATE PRECIPITATES ADSORBING A SUBSTANTIAL AMOUNT OF DISSOLVED AND SUSPENDED TRACE ELEMENTS IN THE SEA WATER AND ADSORBING AND ABSORBING SODIUM CHLORIDE, THEREAFTER SEPARATING SAID PRECIPTATES FROM SAID SEA WATER, THEN WASHING THE PRECIPITATES WITH FRESH WATER TO REMOVE SAID SODIUM CHLORIDE, AND THEN DRYING THE PRECIPITATES CONTAINING SAID TRACE ELEMENTS.
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) | 1963-04-26 | 1963-10-26 | 1964-04-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-26 | 1967-10-26 | 1968-04-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-26 | 1971-10-26 | 1972-04-26 | $7700.00 | Window Closed / Lapsed |