US2958695A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Synthesis of substituted succinyl compounds
Assignee: Texaco Inc
•
Filing: 1954-10-20
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Granted: 1960-11-01
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Expires: 1974-10-20
Abstract
No abstract record available.
Inventors
- 👤 Bernard F Crowe
- 👤 Robert Y Heisler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:47
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/30; C07D207/34; C07D207/36; C07D207/40; C07D207/404; C07D207/408; C07D207/412; C07C; C07C51/00; C07C51/10; C07C51/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A PROCESS FOR THE PREPARATION OF A SUCCINYL COMPOUND COMPRISING: REACTING, AT A TEMPERATURE OF 250*-600*F. AND A PRESSURE ABOVE 1000 P.S.I.G. IN THE PRESENCE OF A CARBONYLATION CATALYST OF THE IRON SUBGROUP, A MONOCARBOXYLIC ACID CONTAINING AT LEAST 5 CARBON ATOMS, SAID ACID HAVING AN OLEFINIC CARBON-TOCARBON BOND DISPLACED BY AN OPEN CHAIN OF AT LEAST TWO METHYLENE RADICALS FROM THE CARBOXYL GROUP, WITH CARBON MONOXIDE AND AN AMINE SELECTED FROM THE GROUP CONSISTING OF PRIMARY AND SECONDARY ALKYL, ARYL, ARALKYL, ALICYCLIC AND HETEROCYCLIC AMINES.
Claim 2
Dependent Claim
86 words
A PROCESS FOR THE PREPARATION OF A SUCCINYL COMPOUND COMPRISING: REACTING, AT A TEMPERATURE OF 250*-600*F. AND A PRESSURE ABOVE 1000 P.S.I.G. IN THE PRESENCE OF A CARBONYLATION CATALYST OF THE IRON SUBGROUP, A MONOCARBOXYLIC ACID CONTAINING AT LEAST 5 CARBON ATOMS, SAID ACID HAVING AN OLEFINIC CARBON-TOCARBON BOND DISPLACED BY AN OPEN CHAIN OF AT LEAST TWO METHYLENE RADICALS FROM THE CARBOXYL GROUP, WITH CARBON MONOXIDE AND AN AMINE SELECTED FROM THE GROUP CONSISTING OF PRIMARY AND SECONDARY ALKYL, ARYL, ARALKYL, ALICYCLIC AND HETEROCYCLIC AMINES.
References Cited (Backward Citations)
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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) | 1963-11-01 | 1964-05-02 | 1964-11-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-11-01 | 1968-05-02 | 1968-11-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-11-01 | 1972-05-02 | 1972-11-01 | $7700.00 | Window Closed / Lapsed |