US3255598A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Crystal forming process
Assignee: Phillips Petroleum Co
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Filing: 1963-02-08
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Granted: 1966-06-14
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Expires: 1983-02-08
Abstract
No abstract record available.
Inventors
- 👤 John E Cottle
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:16
CPC Classifications
B; B01; B01D; B01D9/00; B01D9/0063; A; A23; A23B; A23B2/00; A23B2/90; A23B2/905; A23L; A23L2/00; A23L2/02; A23L2/08; A23L2/12; B01D9/0004; B01D9/0013; B01D9/004; B01D9/005; C; C12; C12H; C12H6/00; C12H6/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
207 words
IN A PROCESS WHICH COMPRISES PASSING A LIQUID MULTICOMPONENT MIXTURE CONTAINING A CRYSTALLIZABLE COMPONENT TO A FIRST CHILLING ZONE, FORMING A FIRST SLURRY OF CRYSTALS OF SAID CRYSTALLIZABLE COMPONENT IN MOTHER LIQUOR WITHIN SAID FIRST CHILLING ZONE, MEASUREING THE TEMPERATURE OF THE RESULTANT FORMED SLURRY, MANIPULATING AN INPUT PROCESS VARIABLE OF SAID FIRST CHILLING ZONE RESPONSIVE TO SAID TEMPERATURE MEASUREMENT, PASSING SAID FORMED SLURRY FROM SAID FIRST CHILLING ZONE TO A SEPARATION ZONE, AND SEPARATING SAID CRYSTALS FROM SAID MOTHER LIQUOR IN SAID SEPARATION ZONE; THE IMPROVEMENT WHICH COMPRISES PASSING A PORTION OF SAID MOTHER LIQUOR SEPARATED FROM SAID CRYSTALS IN SAID SEPARATION ZONE TO A SECOND CHILLING ZONE, FORMING A SECOND SLURRY OF CRYSTALS IN MOTHER LIQUOR WITHIN SAID SECND CHILLING ZONE, MEASUREING THE TEMPERATURE OF THE REAULTANT SLURRY FORMED IN SAID SECOND CHILLING ZONE, MANIPULATING AN INPUT PROCESS VARIABLE OF SAID SECOND CHILLING ZONE RESPONSIVE TO SAID TEMPEATURE MEASUREMENT OF SAID SECOND SLURRY, COMBINING SAID FIRST SLURRY WITH SAID SECOND SLURRY, SAID SECOND SLURRY CONTAINING A SUBSTANTIALLY LOWER CONECNTRATION OF SAID CRYSTALLIZABLE COMPONENT THAN THE CONCENTRATION OF SAID CRYSTALLIZABLE COMPONENT IN SAID FIRST SLURRY, AND PASSING THE RESULTANT COMBINED SLURRY TO SAID SEPARATION ZONE, SAID RESULTANT COMBINED SLURRY HAVING A SUBSTANTIALLY CONSTANT CONCENTRATION OF SOLIDS.
Claim 2
Dependent Claim
207 words
IN A PROCESS WHICH COMPRISES PASSING A LIQUID MULTICOMPONENT MIXTURE CONTAINING A CRYSTALLIZABLE COMPONENT TO A FIRST CHILLING ZONE, FORMING A FIRST SLURRY OF CRYSTALS OF SAID CRYSTALLIZABLE COMPONENT IN MOTHER LIQUOR WITHIN SAID FIRST CHILLING ZONE, MEASUREING THE TEMPERATURE OF THE RESULTANT FORMED SLURRY, MANIPULATING AN INPUT PROCESS VARIABLE OF SAID FIRST CHILLING ZONE RESPONSIVE TO SAID TEMPERATURE MEASUREMENT, PASSING SAID FORMED SLURRY FROM SAID FIRST CHILLING ZONE TO A SEPARATION ZONE, AND SEPARATING SAID CRYSTALS FROM SAID MOTHER LIQUOR IN SAID SEPARATION ZONE; THE IMPROVEMENT WHICH COMPRISES PASSING A PORTION OF SAID MOTHER LIQUOR SEPARATED FROM SAID CRYSTALS IN SAID SEPARATION ZONE TO A SECOND CHILLING ZONE, FORMING A SECOND SLURRY OF CRYSTALS IN MOTHER LIQUOR WITHIN SAID SECND CHILLING ZONE, MEASUREING THE TEMPERATURE OF THE REAULTANT SLURRY FORMED IN SAID SECOND CHILLING ZONE, MANIPULATING AN INPUT PROCESS VARIABLE OF SAID SECOND CHILLING ZONE RESPONSIVE TO SAID TEMPEATURE MEASUREMENT OF SAID SECOND SLURRY, COMBINING SAID FIRST SLURRY WITH SAID SECOND SLURRY, SAID SECOND SLURRY CONTAINING A SUBSTANTIALLY LOWER CONECNTRATION OF SAID CRYSTALLIZABLE COMPONENT THAN THE CONCENTRATION OF SAID CRYSTALLIZABLE COMPONENT IN SAID FIRST SLURRY, AND PASSING THE RESULTANT COMBINED SLURRY TO SAID SEPARATION ZONE, SAID RESULTANT COMBINED SLURRY HAVING A SUBSTANTIALLY CONSTANT CONCENTRATION OF SOLIDS.
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) | 1969-06-13 | 1969-12-13 | 1970-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-06-13 | 1973-12-13 | 1974-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-06-13 | 1977-12-13 | 1978-06-14 | $7700.00 | Window Closed / Lapsed |