US3012064A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of monoesters of polyhydric alcohols
Assignee: Monsanto Chemicals Ltd
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Filing: 1957-03-28
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Granted: 1961-12-05
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Expires: 1977-03-28
Abstract
No abstract record available.
Inventors
- 👤 Leander A Hertling
- 👤 Robert W Radue
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:29
CPC Classifications
C; C07; C07C; C07C69/00; C07C69/76; C07C69/84; C07C69/88; C07C67/00; C07C67/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
58 words
IN AN ALCOHOLYSIS REACTION BETWEEN A POLYHYDRIC ALCOHOL AND AN ESTER OF A MONOCARBOXYLIC ACID IN THE PRESENCE OF AN ALKALI METAL ALCOHOLATE TO PRODUCE A MONOESTER OF SAID POLYHYDRIC ALCOHOL, THE STEP COMPRISING NEUTRALIZING THE ALCOHOLYSIS REACTION MIXTURE WITH GASEOUS ANHYDROUS HYDROGEN HALIDE PRIOR TO SEPARATION OF UNREACTED POLYHYDRIC ALCOHOL AND SAID MONOESTER OF SAID POLYHYDRIC ALOCHOL.
Claim 2
Dependent Claim
58 words
IN AN ALCOHOLYSIS REACTION BETWEEN A POLYHYDRIC ALCOHOL AND AN ESTER OF A MONOCARBOXYLIC ACID IN THE PRESENCE OF AN ALKALI METAL ALCOHOLATE TO PRODUCE A MONOESTER OF SAID POLYHYDRIC ALCOHOL, THE STEP COMPRISING NEUTRALIZING THE ALCOHOLYSIS REACTION MIXTURE WITH GASEOUS ANHYDROUS HYDROGEN HALIDE PRIOR TO SEPARATION OF UNREACTED POLYHYDRIC ALCOHOL AND SAID MONOESTER OF SAID POLYHYDRIC ALOCHOL.
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) | 1964-12-04 | 1965-06-05 | 1965-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-12-04 | 1969-06-05 | 1969-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-12-04 | 1973-06-05 | 1973-12-05 | $7700.00 | Window Closed / Lapsed |