US2616908A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous process for solvent extraction of castor oil from castor seed
Assignee: Baker Castor Oil Co
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Filing: 1950-04-18
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Granted: 1952-11-04
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Expires: 1970-04-18
Abstract
No abstract record available.
Inventors
- 👤 Ivor M Colbeth
- 👤 James S F Carter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 17:07
CPC Classifications
C; C11; C11B; C11B1/00; C11B1/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
150 words
A CONTINUOUS PROCESS FOR THE MANUFACTURE OF CASTOR OIL BY THE SOLVENT EXTRACTION OF CASTOR SEED, COMPRISING THE STEPS OF: (A) COMMINUTING THE SEED IN THE PRESENCE OF A VOLATILE, SUBSTANTIALLY ALIPHATIC HYDROCARBON SOLVENT TO FORM A SLURRY, (B) CONVERTING THE SEED PROTEINS TO A NON-GELATINOUS FORM, (C) SEPARATING THE MISCELLA FROM THE SOLIDS BY THICKENING AND COMPACTING THE SOLIDS OF THE SLURRY ON ONE SURFACE OF A PERFORATE FILTERING ELEMENT WHILE SUBJECTING THE SLURRY TO SUCTION APPLIED TO THE OPPOSITE SURFACE OF SAID ELEMENT TO PRODUCE A SUBSTANTIALLY SOLIDS-FREE MISCELLA AND ROTATING SAID ELEMENT ON A HORIZONTAL AXIS, (D) COOLING THE MISCELLA TO A TEMPERATURE AT WHICH IT SEPARATES INTO TWO LAYERS, (E) SEPARATING THE LOWER LAYER FROM THE UPPER LAYER OF THE COOLED MISCELLA, AND (F) RECOVERING THE CASTOR OIL, WHICH CONSTITUTES AT LEAST ABOUT 50% OF THE LOWER LAYER, FROM THE SOLVENT OF SAID LAYER BY DISTILLATION.
Claim 2
Dependent Claim
150 words
A CONTINUOUS PROCESS FOR THE MANUFACTURE OF CASTOR OIL BY THE SOLVENT EXTRACTION OF CASTOR SEED, COMPRISING THE STEPS OF: (A) COMMINUTING THE SEED IN THE PRESENCE OF A VOLATILE, SUBSTANTIALLY ALIPHATIC HYDROCARBON SOLVENT TO FORM A SLURRY, (B) CONVERTING THE SEED PROTEINS TO A NON-GELATINOUS FORM, (C) SEPARATING THE MISCELLA FROM THE SOLIDS BY THICKENING AND COMPACTING THE SOLIDS OF THE SLURRY ON ONE SURFACE OF A PERFORATE FILTERING ELEMENT WHILE SUBJECTING THE SLURRY TO SUCTION APPLIED TO THE OPPOSITE SURFACE OF SAID ELEMENT TO PRODUCE A SUBSTANTIALLY SOLIDS-FREE MISCELLA AND ROTATING SAID ELEMENT ON A HORIZONTAL AXIS, (D) COOLING THE MISCELLA TO A TEMPERATURE AT WHICH IT SEPARATES INTO TWO LAYERS, (E) SEPARATING THE LOWER LAYER FROM THE UPPER LAYER OF THE COOLED MISCELLA, AND (F) RECOVERING THE CASTOR OIL, WHICH CONSTITUTES AT LEAST ABOUT 50% OF THE LOWER LAYER, FROM THE SOLVENT OF SAID LAYER BY DISTILLATION.
References Cited (Backward Citations)
US2467403A
Cited
US2502484A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-11-04 | 1956-05-05 | 1956-11-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-11-04 | 1960-05-05 | 1960-11-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-11-04 | 1964-05-05 | 1964-11-04 | $7700.00 | Window Closed / Lapsed |