US2717896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Certain 4(lower alkyl carboxylic acid acyl) carbethoxypiperazines
Assignee: Wyeth Holdings LLC
•
Filing: 1953-03-02
•
Granted: 1955-09-13
•
Expires: 1973-03-02
Abstract
No abstract record available.
Inventors
- 👤 Goldman Leon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:41
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/16; C07D295/20; C07D295/205
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
8 words
COMPOUNDS OF THE GROUP HAVING THE GENERAL FORMULA:
Claim 2
Dependent Claim
8 words
COMPOUNDS OF THE GROUP HAVING THE GENERAL FORMULA:
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1958-09-12 | 1959-03-14 | 1959-09-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1962-09-12 | 1963-03-14 | 1963-09-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1966-09-12 | 1967-03-14 | 1967-09-13 | $7700.00 | Window Closed / Lapsed |