US2622114A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fractional crystallization process and apparatus
Assignee: Phillips Petroleum Co
•
Filing: 1948-12-31
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Granted: 1952-12-16
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Expires: 1968-12-31
Abstract
No abstract record available.
Inventors
- 👤 Samuel C Carney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:11
CPC Classifications
B; B01; B01D; B01D9/00; B01D9/0004; B01D9/0013; B01D9/004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
106 words
THE METHOD OF SEPARATING A MIXTURE WHICH MELTS OVER A RANGE OF TEMPERATURE INTO A HIGHERMELTING FRACTION AND A LOWER-MELTING FRACTION WHICH COMPRISES PASSING SAID MIXTURE INTO A SEPARATION ZONE, SOLIDIFYING AT LEAST A PORTION OF SAID MIXTURE AND PASSING A PLURALITY OF SEPARATE VERTICALLY SPACED-APART MASES OF RESULTING SOLID UPWARD THROUGH SAID ZONE CONTAINING A DISCONTINUOUS LIQUID PHASE, GRAVITATING A REFLUX LIQUID THROUGH SAID SEPARATION ZONE AS SAID DISCONTINUOUS LIQUID PHASE RICHER IN SAID HIGHER-MELTING FRACTION THAN SAID SOLID, WITHDRAWING HIGHER MELTING FRACTION AS SOLID MATERIAL FROM AN UPPER PORTION OF SAID ZONE AND LOWER-MELTING FRACTION FROM A LOWER PORTION, ADDING HEAT T AN UPPER
Claim 2
Independent Claim
106 words
THE METHOD OF SEPARATING A MIXTURE WHICH MELTS OVER A RANGE OF TEMPERATURE INTO A HIGHERMELTING FRACTION AND A LOWER-MELTING FRACTION WHICH COMPRISES PASSING SAID MIXTURE INTO A SEPARATION ZONE, SOLIDIFYING AT LEAST A PORTION OF SAID MIXTURE AND PASSING A PLURALITY OF SEPARATE VERTICALLY SPACED-APART MASES OF RESULTING SOLID UPWARD THROUGH SAID ZONE CONTAINING A DISCONTINUOUS LIQUID PHASE, GRAVITATING A REFLUX LIQUID THROUGH SAID SEPARATION ZONE AS SAID DISCONTINUOUS LIQUID PHASE RICHER IN SAID HIGHER-MELTING FRACTION THAN SAID SOLID, WITHDRAWING HIGHER MELTING FRACTION AS SOLID MATERIAL FROM AN UPPER PORTION OF SAID ZONE AND LOWER-MELTING FRACTION FROM A LOWER PORTION, ADDING HEAT T AN UPPER
References Cited (Backward Citations)
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US1576137A
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US1738275A
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US2225799A
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US2427042A
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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) | 1955-12-16 | 1956-06-16 | 1956-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-12-16 | 1960-06-16 | 1960-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-12-16 | 1964-06-16 | 1964-12-16 | $7700.00 | Window Closed / Lapsed |