US3828017A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for isolating proteins using liquid fluorocarbons and low density hydrocarbon solvents
Assignee: United States Department of Agriculture
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Filing: 1973-03-16
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Granted: 1974-08-06
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Expires: 1993-03-16
Abstract
Abstract CEREAL OR OTHER PROTEIN-CONTAINING MATERIAL IS GROUND AND MIXED WITH A LIQUID FLUOROCARBON WHOSE DENSITY IS ADJUSTED TO 1.35 TO 1.45. THE RESULTING SLURRY IS CENTRIFUGED, WHEREBY TO PRODUCE A PROTEIN FRACTION FLOATING ON THE SURFACE OF THE LIQUID, A BOTTOM PHASE COMPOSED MAINLY OF STARCH, AND AN INTERMEDIATE FLUOROCARBON PHASE CON-TAINING FAT. THE PROTEINN PHASE CAN BE EASILY SEPARATED FROM THE REMAINDER, DRIED, AND USED AS A DIETARY SUPPLEMENT OR THE LIKE. THE STARCH AND FAT COMPONENTS CAN ALSO BE READILY SEPARATED FROM THE CENTRIFUGED SLURRY.
Inventors
- 👤 C Walker
- 👤 J Finley
- 👤 E Hautala
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 22:06
CPC Classifications
A; A23; A23J; A23J1/00; A23J1/14; A23J1/142; A23J1/006; A23J1/007; A23J1/12; C; C08; C08B; C08B30/00; C08B30/04; C08B30/042; C08B30/046; C11; C11B; C11B1/00; C11B1/10
Claims Analysis
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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) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |