Patent US2834801A successfully refreshed from Google Patents.
US2834801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of esterification and purification of higher alcohols
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1954-09-22
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Granted: 1958-05-13
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Expires: 1974-09-22
Abstract
No abstract record available.
Inventors
- 👤 Clyde L Aldridge
- 👤 Joseph K Mertzweiller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:23
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/48; C07C67/52; C07C67/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
75 words
IN A PROCESS OF PREPARING A PLASTICIZER ESTER FROM A BRANCHED C5 TO C10 ALCOHOL, THE IMPROVEMENT WHICH COMPRISES REMOVING BY DISTILLATION FROM SAID ESTER UNDER SUBATMOSPHERIC PRESSURE EXCESS UNREACTED ALCOHOL AND CONTAMINANTS WHICH ARE PRINCIPALLY ETHERS WHICH HAVE A LOWER BOILING RANGE THAN THE DESIRED ESTER AND HIGHER BOILING THAN THE ALCOHOL, AND RECOVERING SAID ESTER AS AN UNDISTILLED BOTTOMS STRIPPED OF THE EXCESS UNREACTED ALCOHOL AND OF SAID CONTAMINANTS WHICH ARE PRINCIPALLY ETHERS.
Claim 2
Dependent Claim
75 words
IN A PROCESS OF PREPARING A PLASTICIZER ESTER FROM A BRANCHED C5 TO C10 ALCOHOL, THE IMPROVEMENT WHICH COMPRISES REMOVING BY DISTILLATION FROM SAID ESTER UNDER SUBATMOSPHERIC PRESSURE EXCESS UNREACTED ALCOHOL AND CONTAMINANTS WHICH ARE PRINCIPALLY ETHERS WHICH HAVE A LOWER BOILING RANGE THAN THE DESIRED ESTER AND HIGHER BOILING THAN THE ALCOHOL, AND RECOVERING SAID ESTER AS AN UNDISTILLED BOTTOMS STRIPPED OF THE EXCESS UNREACTED ALCOHOL AND OF SAID CONTAMINANTS WHICH ARE PRINCIPALLY ETHERS.
References Cited (Backward Citations)
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-05-12 | 1961-11-11 | 1962-05-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-05-12 | 1965-11-11 | 1966-05-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-05-12 | 1969-11-11 | 1970-05-13 | $7700.00 | Window Closed / Lapsed |