US3188172A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preventing blue colouration in sodium chloride treated with ferroor ferricyanide compounds
Assignee: Cavity GmbH
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Filing: 1962-11-16
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Granted: 1965-06-08
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Expires: 1982-11-16
Abstract
No abstract record available.
Inventors
- 👤 Schultze Martin
- 👤 Holscher Karl-August
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:09
CPC Classifications
B; B01; B01J; B01J2/00; B01J2/30; C; C01; C01D; C01D3/00; C01D3/26
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
78 words
A PROCESS FOR MAKING A NON-CAKING AND COLOR-INHIBITED GROUND SODIUM CHLORIDE SALT WHICH COMPRISES UNIFORMLY DISTRIBUTING IN SAID SALT (U) AN ANTI-CAKING AGENT SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL FERROCYANIDES AND FERRICYANIDES AT THE RATE OF FROM 0.2 TO 200 GRAMS PER TON OF SALT AND (2) A COLOR-INHIBITING AGENT SELECTED FROM THE GROUP CONSISTING OF HYDROXIDES OF ALKALINE EARTH METALS, MAGNESIUM AND ALUMINUM AT THE RATE OF 50 TO 500 GRAMS PER TON OF SALT.
Claim 2
Dependent Claim
78 words
A PROCESS FOR MAKING A NON-CAKING AND COLOR-INHIBITED GROUND SODIUM CHLORIDE SALT WHICH COMPRISES UNIFORMLY DISTRIBUTING IN SAID SALT (U) AN ANTI-CAKING AGENT SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL FERROCYANIDES AND FERRICYANIDES AT THE RATE OF FROM 0.2 TO 200 GRAMS PER TON OF SALT AND (2) A COLOR-INHIBITING AGENT SELECTED FROM THE GROUP CONSISTING OF HYDROXIDES OF ALKALINE EARTH METALS, MAGNESIUM AND ALUMINUM AT THE RATE OF 50 TO 500 GRAMS PER TON OF SALT.
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) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |