US2651646A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid-liquid extraction process
Assignee: Colgate Palmolive Co
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Filing: 1950-03-04
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Granted: 1953-09-08
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Expires: 1970-03-04
Abstract
No abstract record available.
Inventors
- 👤 Goldsmith Henry Arnold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:33
CPC Classifications
C; C11; C11B; C11B7/00; C11B7/0008
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A PROCESS OF TREATING AN ESTER PRODUCT CONTAINING PRINCIPALLY A MIXTURE OF LESS COMPLETELY AND MORE COMPLETELY ACYLATED ESTERS OF FATTY ACIDS AND POLYHYDRIC ALCOHOLS WHICH COMPRISES CONTACTING SAID ESTER PRODUCT WITH WATER, A WATER MISCIBLE LOWER ALIPHATIC ALCOHOL, AND A LOW BOILING ALIPHATIC HYDROCARBON, SAID ALCOHOL AND HYDROCARBON BEING MISCIBLE AND SAID WATER BEING PRESENT IN AN AMOUNT SUFFICIENT TO CAUSE THE FORMATION OF TWO IMMISCIBLE LIQUID PHASES, ONE PHASE COMPRISING AQUEOUS ALCOHOL IN WHICH A MAJOR PROPORTION OF SAID LESS COMPLETELY ACYLATED ESTERS ARE DISSOLVED AND ONE PHASE COMPRISING THE HYDROCARBON IN WHICH A MAJOR PROPORTION OF SAID MORE COMPLETELY ACYLATED ESTERS ARE DISSOLVED, AND SEPARATING SAID TWO LIQUID PHASES.
Claim 2
Dependent Claim
112 words
A PROCESS OF TREATING AN ESTER PRODUCT CONTAINING PRINCIPALLY A MIXTURE OF LESS COMPLETELY AND MORE COMPLETELY ACYLATED ESTERS OF FATTY ACIDS AND POLYHYDRIC ALCOHOLS WHICH COMPRISES CONTACTING SAID ESTER PRODUCT WITH WATER, A WATER MISCIBLE LOWER ALIPHATIC ALCOHOL, AND A LOW BOILING ALIPHATIC HYDROCARBON, SAID ALCOHOL AND HYDROCARBON BEING MISCIBLE AND SAID WATER BEING PRESENT IN AN AMOUNT SUFFICIENT TO CAUSE THE FORMATION OF TWO IMMISCIBLE LIQUID PHASES, ONE PHASE COMPRISING AQUEOUS ALCOHOL IN WHICH A MAJOR PROPORTION OF SAID LESS COMPLETELY ACYLATED ESTERS ARE DISSOLVED AND ONE PHASE COMPRISING THE HYDROCARBON IN WHICH A MAJOR PROPORTION OF SAID MORE COMPLETELY ACYLATED ESTERS ARE DISSOLVED, AND SEPARATING SAID TWO LIQUID PHASES.
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) | 1956-09-07 | 1957-03-09 | 1957-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-07 | 1961-03-09 | 1961-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-07 | 1965-03-09 | 1965-09-08 | $7700.00 | Window Closed / Lapsed |