US3146234A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-substituted-2-piperazinones and 1-substituted-7-homopiperazinones
Assignee: STWB Inc
•
Filing: 1960-10-18
•
Granted: 1964-08-25
•
Expires: 1980-10-18
Abstract
No abstract record available.
Inventors
- 👤 Archer Sydney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:19
CPC Classifications
C; C07; C07D; C07D401/00; C07D401/02; C07D401/12; A; A61; A61K; A61K31/00; C07D209/00; C07D209/02; C07D209/04; C07D209/10; C07D209/14; C07D209/18; C07D241/00; C07D241/02; C07D241/06; C07D241/08; C07D403/00; C07D403/02; C07D403/06; C07D403/12; C07D405/00; C07D405/02; C07D405/12; C07D491/00; C07D491/02; C07D491/04; C07D497/00; C07D497/02; C07D497/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A MEMBER OF THE GROUP CONSISTING OF (A) COMPOUNDS HAVING THE FORMULA
Claim 2
Dependent Claim
12 words
A MEMBER OF THE GROUP CONSISTING OF (A) COMPOUNDS HAVING THE FORMULA
References Cited (Backward Citations)
US2633467A
Cited
US2653153A
Cited
US2904548A
Cited
US3062821A
Cited
US3072658A
Cited
US3091615A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-08-25 | 1968-02-24 | 1968-08-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-08-25 | 1972-02-24 | 1972-08-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-08-25 | 1976-02-24 | 1976-08-25 | $7700.00 | Window Closed / Lapsed |