US2910516A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fractional crystallization process and apparatus
Assignee: Phillips Petroleum Co
•
Filing: 1953-08-20
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Granted: 1959-10-27
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Expires: 1973-08-20
Abstract
No abstract record available.
Inventors
- 👤 Elton E Rush
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:02
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/42; C07C51/43; B; B01; B01D; B01D9/00; B01D9/0004; B01D9/0013; B01D9/004; B01D9/0045; B01D9/005
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A COMTINUOUS PROCESS FOR SEPARATING A CRYSTALLIZABLE COMPONENT FROM A LIQUID MULTI-COMPONENT MIXTURE WHICH COMPRISES INTRODUCING SAID MIXTURE UNDER PRESSURE INTO A COOLING ZONES, COOLING SAID MIXTURE SO AS TO CRYSTALLIZE SAID COMPONENT; SEPARATING THE CRYSTALS FROM THE LOWER MELTING COMPONENTS OF SAID MIXTURE; PASSING SAID CRYSTALS INTO A PURIFICATION ZONE SO AS TO FORM THEREIN A UNI FORM, CONTIGUOUS MASS OF CRYSTALS; MOVING SAID MASS OF CRYSTALS DOWNWARDLY THROUGH SAID PURIFICATION ZONE SOLELY BY THE COMBINATION OF THE FORCE OF GRAVITY AND THE HYDRAULIC FORCE EXERTED THEREON BY SAID MIXTURE; MAINTAINING THE LOWER END OF SAID PURIFICATION ZONE AT A TEMPERATURE AT LEAST AS HIGH AS THE MELTING POINT OF SAID CRYSTALS; MELTING SAID CRYSTALS IN THE LOWER END OF SAID PURIFICATION ZONE; DISPLACING A PORTION OF THE RESULTING
Claim 2
Dependent Claim
130 words
A COMTINUOUS PROCESS FOR SEPARATING A CRYSTALLIZABLE COMPONENT FROM A LIQUID MULTI-COMPONENT MIXTURE WHICH COMPRISES INTRODUCING SAID MIXTURE UNDER PRESSURE INTO A COOLING ZONES, COOLING SAID MIXTURE SO AS TO CRYSTALLIZE SAID COMPONENT; SEPARATING THE CRYSTALS FROM THE LOWER MELTING COMPONENTS OF SAID MIXTURE; PASSING SAID CRYSTALS INTO A PURIFICATION ZONE SO AS TO FORM THEREIN A UNI FORM, CONTIGUOUS MASS OF CRYSTALS; MOVING SAID MASS OF CRYSTALS DOWNWARDLY THROUGH SAID PURIFICATION ZONE SOLELY BY THE COMBINATION OF THE FORCE OF GRAVITY AND THE HYDRAULIC FORCE EXERTED THEREON BY SAID MIXTURE; MAINTAINING THE LOWER END OF SAID PURIFICATION ZONE AT A TEMPERATURE AT LEAST AS HIGH AS THE MELTING POINT OF SAID CRYSTALS; MELTING SAID CRYSTALS IN THE LOWER END OF SAID PURIFICATION ZONE; DISPLACING A PORTION OF THE RESULTING
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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) | 1962-10-26 | 1963-04-27 | 1963-10-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-26 | 1967-04-27 | 1967-10-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-26 | 1971-04-27 | 1971-10-27 | $7700.00 | Window Closed / Lapsed |