US3199948A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Processing of kainitic minerals
Assignee: SINCAT SOC IND CATANESE SpA
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Filing: 1962-06-19
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Granted: 1965-08-10
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Expires: 1982-06-19
Abstract
No abstract record available.
Inventors
- 👤 Scarfi Alberto
- 👤 Gugliotta Emanuele
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:21
CPC Classifications
C; C01; C01D; C01D5/00; C01D5/06; C01D5/10; C01D3/00; C01D3/04; C01D3/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A METHOD OF PROCESSING CRYSTALLING KAINITIC MINERALS TO EXTRACT POTASSIUM SULPHATE AND POTASSIUM CHLORIDE THEREFROM, COMPRISING THE STEPS OF HEATING SAID MINERALS IN THE ABSENCE OF EXTERNALLY SUPPLIED WATER TO A TEMPEREATURE BETWEEN SUBSTANTIALLY 130*C. AND 190*C. TO RELEASE A MINOR FRACTION OF THE WATER OF CRYSTALLIZATION FROM THE PARTIALLY DEHYDRATED MINERALS; AND THEREAFTER TREATING SAID MINERALS WITH AN AQUEOUS REACTION MEDIUM; AND RECOVERING FROM THE REACTION PRODUCTS OF SAID MINERALS AND SAID MEDIUM, THE SAID POTASSIUM SULPHATE AND POTASSIUM CHLORIDE.
Claim 2
Independent Claim
81 words
A METHOD OF PROCESSING CRYSTALLING KAINITIC MINERALS TO EXTRACT POTASSIUM SULPHATE AND POTASSIUM CHLORIDE THEREFROM, COMPRISING THE STEPS OF HEATING SAID MINERALS IN THE ABSENCE OF EXTERNALLY SUPPLIED WATER TO A TEMPEREATURE BETWEEN SUBSTANTIALLY 130*C. AND 190*C. TO RELEASE A MINOR FRACTION OF THE WATER OF CRYSTALLIZATION FROM THE PARTIALLY DEHYDRATED MINERALS; AND THEREAFTER TREATING SAID MINERALS WITH AN AQUEOUS REACTION MEDIUM; AND RECOVERING FROM THE REACTION PRODUCTS OF SAID MINERALS AND SAID MEDIUM, THE SAID POTASSIUM SULPHATE AND POTASSIUM CHLORIDE.
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) | 1968-08-09 | 1969-02-08 | 1969-08-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-09 | 1973-02-08 | 1973-08-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-09 | 1977-02-08 | 1977-08-10 | $7700.00 | Window Closed / Lapsed |