US2922697A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conditioned sodium chloride
Assignee: Victor Chemical Works
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Filing: 1958-02-19
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Granted: 1960-01-26
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Expires: 1978-02-19
Abstract
No abstract record available.
Inventors
- 👤 Russell N Bell
- 👤 Lowell E Netherton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:01
CPC Classifications
C; C01; C01D; C01D3/00; C01D3/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
CONDITIONED SODIUM CHLORIDE HAVING FREE-FLOWING, NON-CAKING PROPERTIES, WHICH COMPRISES SODIUM CHLORIDE AND A MINOR PROPORTION OF A WATER-INSOLUBLE CALCIUM POLYPHOSPHATE HAVING SUBMICROSCOPIC CRYSTALS OF LESS THAN ONE MICRON SIZE AND THE PROPERTY OF CONDITIONING SODIUM CHLORIDE, SAID CALCIUM POLYPHOSPHATE PRODUCED BY THE PROCESS WHICH COMPRISES ADDING A 5 TO 15% SOLUTION OF AN ALKALI METAL TRIPOLYPHOSPHATE TO A 2 TO 10% SOLUTION OF A SOLUBLE CALCIUM SALT AT A TEMPERATURE BETWEEN 50* AND 100*C., RAPIDLY ADJUSTING THE PH OF THE RESULTING SLURRY TO APPROXIMATELY 7-10, IMMEDIATELY REMOVING THE RESULTING CRYSTALS OF CALCIUM POLYPHOSPHATE FROM THE REACTION MIXTURE, AND DRYING THE SAME.
Claim 2
Dependent Claim
101 words
CONDITIONED SODIUM CHLORIDE HAVING FREE-FLOWING, NON-CAKING PROPERTIES, WHICH COMPRISES SODIUM CHLORIDE AND A MINOR PROPORTION OF A WATER-INSOLUBLE CALCIUM POLYPHOSPHATE HAVING SUBMICROSCOPIC CRYSTALS OF LESS THAN ONE MICRON SIZE AND THE PROPERTY OF CONDITIONING SODIUM CHLORIDE, SAID CALCIUM POLYPHOSPHATE PRODUCED BY THE PROCESS WHICH COMPRISES ADDING A 5 TO 15% SOLUTION OF AN ALKALI METAL TRIPOLYPHOSPHATE TO A 2 TO 10% SOLUTION OF A SOLUBLE CALCIUM SALT AT A TEMPERATURE BETWEEN 50* AND 100*C., RAPIDLY ADJUSTING THE PH OF THE RESULTING SLURRY TO APPROXIMATELY 7-10, IMMEDIATELY REMOVING THE RESULTING CRYSTALS OF CALCIUM POLYPHOSPHATE FROM THE REACTION MIXTURE, AND DRYING THE SAME.
References Cited (Backward Citations)
US352465A
Cited
USRE18907E
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-01-25 | 1963-07-27 | 1964-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-01-25 | 1967-07-27 | 1968-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-01-25 | 1971-07-27 | 1972-01-26 | $7700.00 | Window Closed / Lapsed |