Patent US2608564A successfully refreshed from Google Patents.
US2608564A
Expired / Lapsed
US
⏱️ 0.0 years remaining
A process for the separation of higher fatty acid partial esters of polyhydric alcohols from mixture containing the same
Assignee: JBS USA LLC
•
Filing: 1948-07-03
•
Granted: 1952-08-26
•
Expires: 1968-07-03
Abstract
No abstract record available.
Inventors
- 👤 Harland H Young
- 👤 Howard C Black
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:48
CPC Classifications
C; C11; C11B; C11B7/00; C11B7/0008; C11B7/0025; C11C; C11C3/00; C11C3/04; C11C3/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
A PROCESS FOR THE SEPARATION OF HIGHER FATTY ACID PARTIAL ESTERS OF POLYHYDRIC ALCOHOLS INTO FRACTIONS HAVING SUBSTANTIALLY UNIFORM CHEMICAL AND PHYSICAL PROPERITIES, WHICH COMPRISES: ADMIXING HIGHER FATTY ACIDS ESTER CONTAINING SUBSTANTIAL AMOUNTS OF HIGHER FATTY ACID PARTIAL ESTERS OF A POLYDRIC ALCOHOL WITH FROM 1/2 TO 15 PARTS BY VOLUME OF AN ESTER OF A LOWER ALIPHATIC ALCOHOL AND AN ALIPHATIC MONOCARBOXYLIC ACID AT A TEMPERATURE BETWEEN 70* F. AND 200* F. TO OBTAIN A COMPLETE SOLUTION OF THE SAID FATTY ACID ESTERS, THEN COOLING SAID SOLUTION STEPWISE AT SMALL INTERVALS OF TEMPERATURE BETWEEN ABOUT 100* F. AND -40* F. AND SEPARATING THE DISTINCT PHASES FORMED AFTER EACH STEPWISE CCOOLING OPERATION, WHEREBY SEVERAL HIGHER FATTY ACID PARTIAL ESTERS HAVING SUBSTANTIAL UNIFORM CHEMICAL AND PHYSICAL PROPERTIES ARE OBTAINED.
Claim 2
Dependent Claim
128 words
A PROCESS FOR THE SEPARATION OF HIGHER FATTY ACID PARTIAL ESTERS OF POLYHYDRIC ALCOHOLS INTO FRACTIONS HAVING SUBSTANTIALLY UNIFORM CHEMICAL AND PHYSICAL PROPERITIES, WHICH COMPRISES: ADMIXING HIGHER FATTY ACIDS ESTER CONTAINING SUBSTANTIAL AMOUNTS OF HIGHER FATTY ACID PARTIAL ESTERS OF A POLYDRIC ALCOHOL WITH FROM 1/2 TO 15 PARTS BY VOLUME OF AN ESTER OF A LOWER ALIPHATIC ALCOHOL AND AN ALIPHATIC MONOCARBOXYLIC ACID AT A TEMPERATURE BETWEEN 70* F. AND 200* F. TO OBTAIN A COMPLETE SOLUTION OF THE SAID FATTY ACID ESTERS, THEN COOLING SAID SOLUTION STEPWISE AT SMALL INTERVALS OF TEMPERATURE BETWEEN ABOUT 100* F. AND -40* F. AND SEPARATING THE DISTINCT PHASES FORMED AFTER EACH STEPWISE CCOOLING OPERATION, WHEREBY SEVERAL HIGHER FATTY ACID PARTIAL ESTERS HAVING SUBSTANTIAL UNIFORM CHEMICAL AND PHYSICAL PROPERTIES ARE OBTAINED.
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) | 1955-08-26 | 1956-02-25 | 1956-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-26 | 1960-02-25 | 1960-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-26 | 1964-02-25 | 1964-08-26 | $7700.00 | Window Closed / Lapsed |