US2882215A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fractional crystallization process
Assignee: Phillips Petroleum Co
•
Filing: 1953-11-27
•
Granted: 1959-04-14
•
Expires: 1973-11-27
Abstract
No abstract record available.
Inventors
- 👤 Glenn H Dale
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:30
CPC Classifications
C; C10; C10G; C10G73/00; C10G73/02; C10G73/06; B; B01; B01D; B01D9/00; B01D9/0004; B01D9/0009; B01D9/0013; B01D9/004
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A PROCESS FOR SEPARATING A COMPONENT FROM A LIQUID MULTI-COMPONENT MIXTURE WHICH COMPRISES MOVING A MASS OF CRYSTALS ESSENTIALLY OF SAID COMPONENT, FORMED BY SAID COMPONENT UPON COOLING SAID MIXTURE, DOWNSTREAM THROUGH A PURIFICATION ZONE TO A MELTING ZONE THEREIN; PASSING A LOW BOILING SOLVENT INTO SAID MELTING ZONE IN SAID PURIFICATION ZONE AT A TEMPERATURE SUFFICIENT TO MELT AT LEAST A PORTION OF SAID CRYSTALS THEREIN; MELTING AT LEAST A PORTION OF SAID CRYSTALS IN SAID MELTING ZONE; PASSING AT LEST A PORTION OF THE RESULTING LIQUID COMPRISING MELTED CRYSTALS AND A SOLVENT AS A REFLUX LIQUID COUNTERCURRENTLY THROUGH SAID MOVING MASS OF CRYSTALS; AND RECOVERING A PRODUCT COMPRISING SAID COMPONENT CONTAINING SOLVENT FROM THE SAID MELTING ZONE.
Claim 2
Dependent Claim
119 words
A PROCESS FOR SEPARATING A COMPONENT FROM A LIQUID MULTI-COMPONENT MIXTURE WHICH COMPRISES MOVING A MASS OF CRYSTALS ESSENTIALLY OF SAID COMPONENT, FORMED BY SAID COMPONENT UPON COOLING SAID MIXTURE, DOWNSTREAM THROUGH A PURIFICATION ZONE TO A MELTING ZONE THEREIN; PASSING A LOW BOILING SOLVENT INTO SAID MELTING ZONE IN SAID PURIFICATION ZONE AT A TEMPERATURE SUFFICIENT TO MELT AT LEAST A PORTION OF SAID CRYSTALS THEREIN; MELTING AT LEAST A PORTION OF SAID CRYSTALS IN SAID MELTING ZONE; PASSING AT LEST A PORTION OF THE RESULTING LIQUID COMPRISING MELTED CRYSTALS AND A SOLVENT AS A REFLUX LIQUID COUNTERCURRENTLY THROUGH SAID MOVING MASS OF CRYSTALS; AND RECOVERING A PRODUCT COMPRISING SAID COMPONENT CONTAINING SOLVENT FROM THE SAID MELTING ZONE.
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) | 1962-04-13 | 1962-10-13 | 1963-04-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-04-13 | 1966-10-13 | 1967-04-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-04-13 | 1970-10-13 | 1971-04-14 | $7700.00 | Window Closed / Lapsed |