US2642389A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treating method for high-boiling esters
Assignee: Standard Oil Development Co
•
Filing: 1950-12-30
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Granted: 1953-06-16
•
Expires: 1970-12-30
Abstract
No abstract record available.
Inventors
- 👤 Charles A Cohen
- 👤 Jr Fred Knoth
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 17:20
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/48; C07C67/56
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
A PROCESS FOR THE TREATMENT OF AN ORGANIC ESTER FORMED BY ESTERIFYING A CARBONXYLIC ACID WITH AN ALCOHOL IN THE PRESENCE OF AN ACIDIC ESTERIFICATION CATALYST WITH REMOVAL OF WATER DURING THE ESTERIFICATION, WHICH COMPRIESES CONTACTING THE ESTER CONTAINING THE ACID CATALYST BUT SUBSTANTIALLY FREED OF WATER WITH A FINELY DIVIDED HEAT-ACTIVATED CLAY HAVING A PARTICLE SIZE OF ABOUT 20 TO 325 MESH, AND SEPARATING THE ACTIVATED CLAY WITH THE ACID CATALYST FROM THE ESTER.
Claim 2
Dependent Claim
75 words
A PROCESS FOR THE TREATMENT OF AN ORGANIC ESTER FORMED BY ESTERIFYING A CARBONXYLIC ACID WITH AN ALCOHOL IN THE PRESENCE OF AN ACIDIC ESTERIFICATION CATALYST WITH REMOVAL OF WATER DURING THE ESTERIFICATION, WHICH COMPRIESES CONTACTING THE ESTER CONTAINING THE ACID CATALYST BUT SUBSTANTIALLY FREED OF WATER WITH A FINELY DIVIDED HEAT-ACTIVATED CLAY HAVING A PARTICLE SIZE OF ABOUT 20 TO 325 MESH, AND SEPARATING THE ACTIVATED CLAY WITH THE ACID CATALYST FROM THE ESTER.
References Cited (Backward Citations)
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US2314621A
Cited
US2322316A
Cited
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Cited
US2542521A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1956-06-15 | 1956-12-15 | 1957-06-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-06-15 | 1960-12-15 | 1961-06-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-06-15 | 1964-12-15 | 1965-06-16 | $7700.00 | Window Closed / Lapsed |