US3233420A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fractional crystallization
Assignee: Phillips Petroleum Co
•
Filing: 1963-05-27
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Granted: 1966-02-08
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Expires: 1983-05-27
Abstract
No abstract record available.
Inventors
- 👤 Daniel M Vesper
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:25
CPC Classifications
B; B01; B01D; B01D9/00; B01D9/0004; B01D9/0013; B01D9/004; B01D9/0063; C; C12; C12H; C12H6/00; C12H6/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
88 words
A PROCESS FOR THE CONCENTRATION OF A MULTI-COMPONENT LIQUID MIXTURE COMPRISING INTRIDUCING SAID MIXTURE AS FEED INTO A COOLING ZONE, COOLING SAID MIXTURE TO FORM A SLURRY OF CRYSTALS IN MOHTER LIQUOR, REMOVING SAID SLURRY FROM SAID COOLING ZONE, SEPARATING SAID CRYSTALS AND MOTHER LIQUOR, INTRODUCING AT LEAST A PORTION OF SAID MOTHER LIQUOR INTO A COOLING ZONE, DETERMINING THE CONCENTRATION OF AT LEAST ONE COMPONENT IN SAID MOTHER LIQUOR AND ADJUSTING THE AMOUNT OF SAID MOTHER LIQUOR BEING INTRODUCED TO SAID COOLING ZONE RESPONSIVE TO SAID DETERMINATION.
Claim 2
Dependent Claim
88 words
A PROCESS FOR THE CONCENTRATION OF A MULTI-COMPONENT LIQUID MIXTURE COMPRISING INTRIDUCING SAID MIXTURE AS FEED INTO A COOLING ZONE, COOLING SAID MIXTURE TO FORM A SLURRY OF CRYSTALS IN MOHTER LIQUOR, REMOVING SAID SLURRY FROM SAID COOLING ZONE, SEPARATING SAID CRYSTALS AND MOTHER LIQUOR, INTRODUCING AT LEAST A PORTION OF SAID MOTHER LIQUOR INTO A COOLING ZONE, DETERMINING THE CONCENTRATION OF AT LEAST ONE COMPONENT IN SAID MOTHER LIQUOR AND ADJUSTING THE AMOUNT OF SAID MOTHER LIQUOR BEING INTRODUCED TO SAID COOLING ZONE RESPONSIVE TO SAID DETERMINATION.
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) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |