US3755385A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of fatty acid ester mixtures enriched in unsaturates
Assignee: Procter and Gamble Co
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Filing: 1971-03-24
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Granted: 1973-08-28
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Expires: 1991-03-24
Abstract
Abstract A PROCESS FOR PREPARING FATTY ESTER MIXUTRES ENRICHED IN UNSATURATES FROM NATURAL FATS AND OILS COMPRISING TRANSESTERIFYING SAID FATS AND OILS WITH A LOWER ALCOHOL AND SELECTIVELY EXTRACTING THE UNSATURATED FATTY ACID ESTERS WITH A TWO-HASE SOLVENT SYSTEM COMPRISING A HYDROCARBON AND GAMMA-BUTYROLACTONE ($-BUTYROLACTONE). THE ESTERS ARE USEFUL IN FOODS AND PAINTS.
Inventors
- 👤 J Hutchins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:41
CPC Classifications
C; C11; C11C; C11C3/00; C11C3/003; C11B; C11B7/00; C11B7/0008; C11B7/0025
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-08-27 | 1977-02-26 | 1977-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-27 | 1981-02-26 | 1981-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-27 | 1985-02-26 | 1985-08-28 | $7700.00 | Window Closed / Lapsed |