Patent US3418930A successfully refreshed from Google Patents.
Patent US2967833A successfully refreshed from Google Patents.
US2967833A
Expired / Lapsed
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Purifying water insoluble solids
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1952-12-13
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Granted: 1961-01-10
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Expires: 1972-12-13
Abstract
No abstract record available.
Inventors
- 👤 Jr Charles N Kimberlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:20
CPC Classifications
B; B01; B01J; B01J47/00; B01J47/10; B01J37/00; B01J37/30
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A PROCESS FOR PURIFYING GELS WHICH COMPRISES PASSING A WATER INSOLUBLE PREVIOUSLY DRIED GEL PARTICLES TO BE PURIFIED INTO A HINDRED SETTLING MIXING ZONE, INTRODUCING ION EXCHANGE SOLID PARTICLES OF A LARGER SIZE THAN SAID GEL PARTICLES INTO SAID MIXING ZONE SAID ION EXCHANGE SOLID PARTICLES HAVING ABOUT THE SAME DENSITY AS THE SOLID GEL PARTICLES, INTRODUCING WATER INTO SAID MIXING ZONE AND PASSIONG IT UPWARDLY THROUGH SAID MIXING ZONE AT A VELOCITY TO CARRY SAID GEL PARTICLES AND SOME ION EXCHANGE PARTICLES UPWARDLY INTO A SUPERIMPOSED DISENGAGING ZONE, REDUCING THE VELOCITY OF THE WATER IN SAID DISENGAGING ZONE TO CAUSE DROPPING BACK OF ION EXCHANGE PARTICLES WHILE PERMITTING UPWARD FLOW OF SAID GEL PARTICLES, WITHDRAWING A SLURRY OF ION EXCHANGE PARTICLES AND SOME OF GEL PARTICLES FROM THE BOTTOM OF SAID MIXING ZONE INTO A LOWER STRIPPING ZONE IN COM-
Claim 2
Dependent Claim
141 words
A PROCESS FOR PURIFYING GELS WHICH COMPRISES PASSING A WATER INSOLUBLE PREVIOUSLY DRIED GEL PARTICLES TO BE PURIFIED INTO A HINDRED SETTLING MIXING ZONE, INTRODUCING ION EXCHANGE SOLID PARTICLES OF A LARGER SIZE THAN SAID GEL PARTICLES INTO SAID MIXING ZONE SAID ION EXCHANGE SOLID PARTICLES HAVING ABOUT THE SAME DENSITY AS THE SOLID GEL PARTICLES, INTRODUCING WATER INTO SAID MIXING ZONE AND PASSIONG IT UPWARDLY THROUGH SAID MIXING ZONE AT A VELOCITY TO CARRY SAID GEL PARTICLES AND SOME ION EXCHANGE PARTICLES UPWARDLY INTO A SUPERIMPOSED DISENGAGING ZONE, REDUCING THE VELOCITY OF THE WATER IN SAID DISENGAGING ZONE TO CAUSE DROPPING BACK OF ION EXCHANGE PARTICLES WHILE PERMITTING UPWARD FLOW OF SAID GEL PARTICLES, WITHDRAWING A SLURRY OF ION EXCHANGE PARTICLES AND SOME OF GEL PARTICLES FROM THE BOTTOM OF SAID MIXING ZONE INTO A LOWER STRIPPING ZONE IN COM-
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-01-10 | 1964-07-11 | 1965-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-10 | 1968-07-11 | 1969-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-10 | 1972-07-11 | 1973-01-10 | $7700.00 | Window Closed / Lapsed |