US3186983A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyclic amides and a process for the preparation thereof
Assignee: Union Carbide Corp
•
Filing: 1962-04-09
•
Granted: 1965-06-01
•
Expires: 1982-04-09
Abstract
No abstract record available.
Inventors
- 👤 Kenneth C Stueben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:44
CPC Classifications
C; C08; C08G; C08G69/00; C08G69/02; C08G69/26
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
6 words
A CYCLIC AMIDE HAVING THE FORMULA:
Claim 2
Dependent Claim
6 words
A CYCLIC AMIDE HAVING THE FORMULA:
Claim 3
Dependent Claim
11 words
A PROCESS FOR THE PREPARATION OF CYCLIC AMIDES HAVING THE FORMULA:
Claim 4
Dependent Claim
11 words
A PROCESS FOR THE PREPARATION OF CYCLIC AMIDES HAVING THE FORMULA:
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) | 1968-05-31 | 1968-11-30 | 1969-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-31 | 1972-11-30 | 1973-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-31 | 1976-11-30 | 1977-06-01 | $7700.00 | Window Closed / Lapsed |