US2685592A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making hard butter
Assignee: EF Drew and Co Inc
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Filing: 1951-02-10
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Granted: 1954-08-03
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Expires: 1971-02-10
Abstract
No abstract record available.
Inventors
- 👤 Barsky George
- 👤 Zinzalian George
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:33
CPC Classifications
C; C11; C11C; C11C3/00; C11C3/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A METHOD OF MAKING SUBSTANTIALLY NEUTRAL GYLCERIDE ESTERS OF HIGHER FATTY ACIDS WHICH COMPRISES INTRODUCING INTO A REACTION VESSEL A MIXTURE OF SAID FATTY ACIDS AND GLYCERINE, THE AMOUNT OF SAID FATTY ACIDS BEING IN EXCESS OF THAT REQUIRED TO FORM TRIGLYCERIDES IN THE REACTION, HEATING SAID MIXTURE TO ABOUT 450* F. UNDER A VACUUM OF ABOUT 25 INCHES OF MERCURY OF CAUSE ESTERIFICATION TAKE PLACE, THEN GRADUALLY INCREASING THE TEMPERATURE TO ABOUT 550* F., MAINTAINING SAID LATTER TEMPERATURE FOR A SUFFICIENT LENGTH OF TIME UNTIL THE FREE FATTY ACIS CONTENT OF THE REACTION MASS BECOMES SUBSTANTIALLY CONSTANT, THEREAFTER REMOVING SAID EXCESS OF FREE FATTY ACIDS BY INCREASING THE VACUUM TO ABOUT 29 INCHES WHILE MAINTAINING SAID TEMPERATURE AND DISTILING OFF FREE FATTY ACIDS, AND RECOVERING THE REACTION PRODUCTS.
Claim 2
Independent Claim
129 words
A METHOD OF MAKING SUBSTANTIALLY NEUTRAL GYLCERIDE ESTERS OF HIGHER FATTY ACIDS WHICH COMPRISES INTRODUCING INTO A REACTION VESSEL A MIXTURE OF SAID FATTY ACIDS AND GLYCERINE, THE AMOUNT OF SAID FATTY ACIDS BEING IN EXCESS OF THAT REQUIRED TO FORM TRIGLYCERIDES IN THE REACTION, HEATING SAID MIXTURE TO ABOUT 450* F. UNDER A VACUUM OF ABOUT 25 INCHES OF MERCURY OF CAUSE ESTERIFICATION TAKE PLACE, THEN GRADUALLY INCREASING THE TEMPERATURE TO ABOUT 550* F., MAINTAINING SAID LATTER TEMPERATURE FOR A SUFFICIENT LENGTH OF TIME UNTIL THE FREE FATTY ACIS CONTENT OF THE REACTION MASS BECOMES SUBSTANTIALLY CONSTANT, THEREAFTER REMOVING SAID EXCESS OF FREE FATTY ACIDS BY INCREASING THE VACUUM TO ABOUT 29 INCHES WHILE MAINTAINING SAID TEMPERATURE AND DISTILING OFF FREE FATTY ACIDS, AND RECOVERING THE REACTION PRODUCTS.
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) | 1957-08-02 | 1958-02-01 | 1958-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-08-02 | 1962-02-01 | 1962-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-08-02 | 1966-02-01 | 1966-08-03 | $7700.00 | Window Closed / Lapsed |