US3035041A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of preparing amides
Assignee: BASF Corp
•
Filing: 1956-10-19
•
Granted: 1962-05-15
•
Expires: 1976-10-19
Abstract
No abstract record available.
Inventors
- 👤 Schwyzer Robert
- 👤 Feurer Max
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:31
CPC Classifications
C; C07; C07C; C07C233/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
IN A METHOD FOR PREPARING CARBOXYLIC ACOD AMIDES BY REACTING IN A SOLUTION AN AMINO COMPOUND IN WHICH THE AMINO GROUP IS THE SOLE GROUP ACYLATABLE BY A CARBOXYLIC ACID ESTER, AND HAVING AT LEAST ONE FREE HYDROGEN ATOM ATTACHED TO THE AMINO NITROGEN WITH AN ESTER THE IMPROVEMENT IN WHICH THE ESTER IS A METHYL ESTER OF A CARBOXYLIC ACID HAVING THE ALCOHOLIC RADICAL
Claim 2
Dependent Claim
65 words
IN A METHOD FOR PREPARING CARBOXYLIC ACOD AMIDES BY REACTING IN A SOLUTION AN AMINO COMPOUND IN WHICH THE AMINO GROUP IS THE SOLE GROUP ACYLATABLE BY A CARBOXYLIC ACID ESTER, AND HAVING AT LEAST ONE FREE HYDROGEN ATOM ATTACHED TO THE AMINO NITROGEN WITH AN ESTER THE IMPROVEMENT IN WHICH THE ESTER IS A METHYL ESTER OF A CARBOXYLIC ACID HAVING THE ALCOHOLIC RADICAL
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) | 1965-05-14 | 1965-11-13 | 1966-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-05-14 | 1969-11-13 | 1970-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-05-14 | 1973-11-13 | 1974-05-15 | $7700.00 | Window Closed / Lapsed |