US2906600A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing sodium chloride brine of high purity
Assignee: Hagan Chemicals and Controls Inc
•
Filing: 1954-10-22
•
Granted: 1959-09-29
•
Expires: 1974-10-22
Abstract
No abstract record available.
Inventors
- 👤 Charles T Roland
- 👤 Paul H Ralston
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:11
CPC Classifications
C; C01; C01D; C01D3/00; C01D3/14; C01D3/16
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
THE METHOD OF PREPARING A SODIUM CHLORIDE BRINE EXTREMELY LOW IN SULFATE CONTENT FROM SOLID SODIUM CHLORIDE WHICH IS CONTAMINATED BY CALCIUM SULFATE WHICH COMPRISES DISSOLVING SAID SODIUM CHLORIDE IN WATER IN THE PRESENCE OF (A) POLYPHOSPHATE COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL POLYPHOSPHATES, ALKALINE EARTH METAL POLYPHOSPHATES AMMONIUM POLYPHOSPHATES, AND ACID POLYPHOSPHATES,AND MIXTURES THEREOF,IN AN AMOUNT WHICH IS FROM ABOUT 1 PART POLYPHOSPHATE PER MILLION PARTS OF DISSOLVING WATER TO ABOUT 2000 PARTS POLYPHOSPHATE PER MILLION PARTS OF DISSOLVING WATER AND (B) A WATER-SOLUBLE COMPOUND OTHER THAN A SULFATE WHICH COMPOUNDS CONTAINED AN ALKALINE EARTH METAL CATION SELECTED FROM THE GROUP CONSISTING OF CALCIUM, BARIUM, AND STRONTIUM, IN AN AMOUNT WHICH IS FROM ABOUT 2 TO ABOUT 10,000 PARTS PER MILLION PARTS OF DISSOLVING WATER.
Claim 2
Independent Claim
129 words
THE METHOD OF PREPARING A SODIUM CHLORIDE BRINE EXTREMELY LOW IN SULFATE CONTENT FROM SOLID SODIUM CHLORIDE WHICH IS CONTAMINATED BY CALCIUM SULFATE WHICH COMPRISES DISSOLVING SAID SODIUM CHLORIDE IN WATER IN THE PRESENCE OF (A) POLYPHOSPHATE COMPOUNDS SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL POLYPHOSPHATES, ALKALINE EARTH METAL POLYPHOSPHATES AMMONIUM POLYPHOSPHATES, AND ACID POLYPHOSPHATES,AND MIXTURES THEREOF,IN AN AMOUNT WHICH IS FROM ABOUT 1 PART POLYPHOSPHATE PER MILLION PARTS OF DISSOLVING WATER TO ABOUT 2000 PARTS POLYPHOSPHATE PER MILLION PARTS OF DISSOLVING WATER AND (B) A WATER-SOLUBLE COMPOUND OTHER THAN A SULFATE WHICH COMPOUNDS CONTAINED AN ALKALINE EARTH METAL CATION SELECTED FROM THE GROUP CONSISTING OF CALCIUM, BARIUM, AND STRONTIUM, IN AN AMOUNT WHICH IS FROM ABOUT 2 TO ABOUT 10,000 PARTS PER MILLION PARTS OF DISSOLVING 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) | 1962-09-28 | 1963-03-30 | 1963-09-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-09-28 | 1967-03-30 | 1967-09-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-09-28 | 1971-03-30 | 1971-09-29 | $7700.00 | Window Closed / Lapsed |