US2702813A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Refining of fatty oils and fats
Assignee: De Laval Separator Co
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Filing: 1952-03-05
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Granted: 1955-02-22
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Expires: 1972-03-05
Abstract
No abstract record available.
Inventors
- 👤 Frank E Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:05
CPC Classifications
C; C11; C11B; C11B3/00; C11B3/02; C11B3/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
108 words
IN THE REFINING OF FATTY OILS, WHEREIN CAUSTIC SODA IS MIXED WITH A CRUDE OIL TO NEUTRALIZE THE FREE FATTY ACIDS THEREIN, AND IN WHICH THE RESULTING SOAPSTOCK IS SEPARATED FROM THE REFINED OIL, THE IMPROVEMENT WHICH COMPRISES ADDING PHOSPHORIC ACID TO THE CRUDE OIL IN AN AMOUNT, OF FULL STRENGTH BASIS, IN THE ORDER OF 0.1 TO 0.4% BY WEIGHT OF THE CRUDE OIL, AND REACTING IT WITH THE OIL TO FORM ADDITION COMPOUNDS PRIOR TO THE MIXTURE OF THE CAUSTIC SODA WITH THE OIL THEREBY REDUCING THE SUBSEQUENT REFINING LOSSES, AND THEN INTRODUCING THE CAUSTIC SODA INTO THE MIXTURE AND CENTRIFUGING MIXTURE AT AN EMULSION-BREAKING TEMPERATURE.
Claim 2
Dependent Claim
108 words
IN THE REFINING OF FATTY OILS, WHEREIN CAUSTIC SODA IS MIXED WITH A CRUDE OIL TO NEUTRALIZE THE FREE FATTY ACIDS THEREIN, AND IN WHICH THE RESULTING SOAPSTOCK IS SEPARATED FROM THE REFINED OIL, THE IMPROVEMENT WHICH COMPRISES ADDING PHOSPHORIC ACID TO THE CRUDE OIL IN AN AMOUNT, OF FULL STRENGTH BASIS, IN THE ORDER OF 0.1 TO 0.4% BY WEIGHT OF THE CRUDE OIL, AND REACTING IT WITH THE OIL TO FORM ADDITION COMPOUNDS PRIOR TO THE MIXTURE OF THE CAUSTIC SODA WITH THE OIL THEREBY REDUCING THE SUBSEQUENT REFINING LOSSES, AND THEN INTRODUCING THE CAUSTIC SODA INTO THE MIXTURE AND CENTRIFUGING MIXTURE AT AN EMULSION-BREAKING TEMPERATURE.
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) | 1958-02-21 | 1958-08-23 | 1959-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-02-21 | 1962-08-23 | 1963-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-02-21 | 1966-08-23 | 1967-02-22 | $7700.00 | Window Closed / Lapsed |