US2608562A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing amides
Assignee: Individual
•
Filing: 1949-06-07
•
Granted: 1952-08-26
•
Expires: 1969-06-07
Abstract
No abstract record available.
Inventors
- 👤 Edward T Roe
- 👤 Swern Daniel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 08:57
CPC Classifications
C; C07; C07C; C07C233/00; C07C233/01
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
45 words
A PROCESS COMPRISING REACTING AN ALIPHATIC MONOCARBOXYLIC ACID HAVING FROM 6 TO 18 CARBON ATOMS WITH A COMPOUND SELECTED FROM THE GROUP CONSISTING OF FORMAMIDE, ACETAMIDE, AND ACETYLUREA AT A TEMPERATURE OF ABOUT FROM 180* TO 250* C. TO PRODUCE THE AMIDE OF SAID ACID
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) | 1955-08-26 | 1956-02-25 | 1956-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-08-26 | 1960-02-25 | 1960-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-08-26 | 1964-02-25 | 1964-08-26 | $7700.00 | Window Closed / Lapsed |