US2942001A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piperazo-pyridazines
Assignee: CIBA PHARM PROD Inc
•
Filing: 1957-10-28
•
Granted: 1960-06-21
•
Expires: 1977-10-28
Abstract
No abstract record available.
Inventors
- 👤 Druey Jean
- 👤 Meier Konrad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 18:05
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/02; C07D487/04; C07D237/00; C07D237/02; C07D237/04; C07D401/00; C07D401/02; C07D401/04; C07D401/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
12 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF COMPOUNDS OF THE FORMULA
References Cited (Backward Citations)
GB573244A
Cited
US2577039A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-06-21 | 1963-12-21 | 1964-06-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-21 | 1967-12-21 | 1968-06-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-21 | 1971-12-21 | 1972-06-21 | $7700.00 | Window Closed / Lapsed |