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US2526557A
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Preparation of n-substituted and n, n-disubstituted beta-amino-saturated aliphatic monocarboxylic acids
Assignee: Goodrich Corp
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Filing: 1948-11-19
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Granted: 1950-10-17
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Expires: 1968-11-19
Abstract
No abstract record available.
Inventors
- 👤 Thomas L Gresham
- 👤 Forrest W Shaver
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:36
CPC Classifications
C; C07; C07C; C07C227/00; C07C227/14; C07C227/18; C07C229/00; C07C229/02; C07C229/04; C07C229/22; C07C229/06; C07C229/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
THE METHOD WHICH COMPRISES BRINGING TOGETHER IN A COMPLETELY ORGANIC LIQUID MEDIUM REACTANTS CONSISTING OF A LIQUID SATURATED ALIPHATIC BETA-LACTONE AND A HYDROXY-SUBSTITUTED SATURATED ALIPHATIC MONOAMINE HAVING AT LEAST ONE HYDROGEN ATOM ATTACHED TO THE NITROGEN ATOM, WHERE UPON CHEMICAL REACTION OCCURS BETWEEN THE SAID LACTONE AND THE SAID AMINE, AND THEN RECOVERING FROM THE REACTED LIQUID MASS A BETA-AMINO SATURATED ALIPHATIC MONOCARBOXYLIC ACID IN WHICH AT LEAST ONE HYDROGEN ATOM OF THE AMINO GROUP HAS BEEN REPLACED BY A HYDROXYALKYL RADICAL.
Claim 2
Independent Claim
82 words
THE METHOD WHICH COMPRISES BRINGING TOGETHER IN A COMPLETELY ORGANIC LIQUID MEDIUM REACTANTS CONSISTING OF A LIQUID SATURATED ALIPHATIC BETA-LACTONE AND A HYDROXY-SUBSTITUTED SATURATED ALIPHATIC MONOAMINE HAVING AT LEAST ONE HYDROGEN ATOM ATTACHED TO THE NITROGEN ATOM, WHERE UPON CHEMICAL REACTION OCCURS BETWEEN THE SAID LACTONE AND THE SAID AMINE, AND THEN RECOVERING FROM THE REACTED LIQUID MASS A BETA-AMINO SATURATED ALIPHATIC MONOCARBOXYLIC ACID IN WHICH AT LEAST ONE HYDROGEN ATOM OF THE AMINO GROUP HAS BEEN REPLACED BY A HYDROXYALKYL RADICAL.
References Cited (Backward Citations)
US2017537A
Cited
US2442143A
Cited
US2375005A
Cited
US2372654A
Cited
US2377814A
Cited
US2446615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-10-16 | 1954-04-17 | 1954-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-10-16 | 1958-04-17 | 1958-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-10-16 | 1962-04-17 | 1962-10-17 | $7700.00 | Window Closed / Lapsed |