Patent US2862788A successfully refreshed from Google Patents.
US2862788A
Expired / Lapsed
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Process for purifying impure solid-phase kainite
Assignee: International Minerals and Chemical Corp
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Filing: 1955-05-03
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Granted: 1958-12-02
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Expires: 1975-05-03
Abstract
No abstract record available.
Inventors
- 👤 Jr William N Stanley
- 👤 William B Dancy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 02:51
CPC Classifications
C; C01; C01F; C01F5/00; C01F5/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
A PROCESS FOR PURIFYING IMPURE SOLID-PHASE KAINITE CONTAINING SOLID-PHASE SODIUM CHLORIDE AS AN IMPURITY IN A PROPORTION BETWEEN ABOUT 5 AND ABOUT 25% BY WEIGHT, BASED ON TOTAL SOLIDS, WHICH COMPRISES SLURRYING SAID IMPURE KAINITE WITH BETWEEN ABOUT 25 AND ABOUT 35% BY WEIGHT OF WATER, BASED ON TOTAL SOLIDS, AT A TEMPERATURE OF LESS THAN ABOUT 35*C. FOR A CONTACT TIME, LESS THAN ABOUT 2 MINUTES, SUFFICIENT TO SELECTIVELY DISSOLVE AT
Claim 2
Dependent Claim
72 words
A PROCESS FOR PURIFYING IMPURE SOLID-PHASE KAINITE CONTAINING SOLID-PHASE SODIUM CHLORIDE AS AN IMPURITY IN A PROPORTION BETWEEN ABOUT 5 AND ABOUT 25% BY WEIGHT, BASED ON TOTAL SOLIDS, WHICH COMPRISES SLURRYING SAID IMPURE KAINITE WITH BETWEEN ABOUT 25 AND ABOUT 35% BY WEIGHT OF WATER, BASED ON TOTAL SOLIDS, AT A TEMPERATURE OF LESS THAN ABOUT 35*C. FOR A CONTACT TIME, LESS THAN ABOUT 2 MINUTES, SUFFICIENT TO SELECTIVELY DISSOLVE AT
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) | 1961-12-01 | 1962-06-02 | 1962-12-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-01 | 1966-06-02 | 1966-12-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-01 | 1970-06-02 | 1970-12-02 | $7700.00 | Window Closed / Lapsed |