US2610980A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of aromatic carboxylic acid amides
Assignee: EIDP Inc
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Filing: 1949-10-25
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Granted: 1952-09-16
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Expires: 1969-10-25
Abstract
No abstract record available.
Inventors
- 👤 Jr Marcus A Naylor
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 16:23
CPC Classifications
C; C07; C07C; C07C63/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
73 words
A PROCESS FOR PREPARING AROMATIC CARBOXYLIC ACID AMIDES WHICH COMPRISES HEATING A MONOCYCLIC AROMATIC HYDROCARBON HAVING AT LEAST ONE HYDROGEN ATOM OF THE AROMATIC RING REPLACED WITH AN ALKYL RADICAL, ANY REMAINING VALENCES OF SAID AROMATIC RING BEING SATISFIED BY HYDROGEN AND SAID ALKYL RADICAL HAVING AT LEAST ONE HYDROGEN ATOM ATTACHED TO THE CARBON ATOM ALPHA TO SAID AROMATIC RING, WITH A MIXTURE COMPRISING ESSENTIALLY SULFUR AND AMMONIA, AT 180* C.-340* C.
Claim 2
Dependent Claim
73 words
A PROCESS FOR PREPARING AROMATIC CARBOXYLIC ACID AMIDES WHICH COMPRISES HEATING A MONOCYCLIC AROMATIC HYDROCARBON HAVING AT LEAST ONE HYDROGEN ATOM OF THE AROMATIC RING REPLACED WITH AN ALKYL RADICAL, ANY REMAINING VALENCES OF SAID AROMATIC RING BEING SATISFIED BY HYDROGEN AND SAID ALKYL RADICAL HAVING AT LEAST ONE HYDROGEN ATOM ATTACHED TO THE CARBON ATOM ALPHA TO SAID AROMATIC RING, WITH A MIXTURE COMPRISING ESSENTIALLY SULFUR AND AMMONIA, AT 180* C.-340* C.
References Cited (Backward Citations)
US2495567A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-09-16 | 1956-03-17 | 1956-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-09-16 | 1960-03-17 | 1960-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-09-16 | 1964-03-17 | 1964-09-16 | $7700.00 | Window Closed / Lapsed |