Process for the purification of edible oils
Abstract
Abstract IN A PROCESS FOR THE PURIFICATION OF VEGETABLE AND ANIMAL OILS COMPRISING THE SUCCESSIVE OPERATIONS OF BLEACHING BY MEANS OF BLEACHING EARTH AND CARRYING OFF THE FATTY ACIDS CONTAINED IN THE OIL BY MEANS OF STEAM UNDER VACUUM, THE IMPROVEMENT WHICH CONSISTS, BEFORE BLEACHING THE OIL, IN TREATING THE OIL WITH A SMALL AMOUNT OF ACID, MORE PARTICULARLY OF AN ORGANIC NATURE, AT A TEMPERATURE OF THE ORDER OF 50 TO 80*C. AND ADJUSTING THE MOISTURE LEVEL OF THE OIL AT A VALUE RANGING BETWEEN 0.1 AND 0.5%; OPTIONALLY, THE ABOVE-MENTIONED ACID TREATMENT MAY BE PRECEDED BY TREATMENT OF THE CRUDE OIL WITH A SMALL AMOUNT OF AN ALKALINE AGENT AND CENTRIFUGING WITH THE OBJECT OF ELIMINATING THE ALKALIZED IMPURITIES.
Inventors
- 👤 Maurice Eugene Velan
Bibliographic Details
Claims Analysis
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |