US3367936A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-(piperazinoalkyl)-pyrazoles
Assignee: Merck KGaA
•
Filing: 1965-11-03
•
Granted: 1968-02-06
•
Expires: 1985-11-03
Abstract
No abstract record available.
Inventors
- 👤 Volker Koppe
- 👤 Karl Schulte
- 👤 Helmut Muller-Calgan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:23
CPC Classifications
A; A23; A23K; A23K20/00; A23K20/10; A23K20/116; A23K20/137
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
21 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF A 4-(W-PIPERAZINOALKYL)-PYRAZOLE OF FORMULA I, AND A PYSIOLOGICALLY ACCEPTABLE ACID ADDITION SALT THEREOF
Claim 2
Dependent Claim
21 words
A MEMBER SELECTED FROM THE GROUP CONSISTING OF A 4-(W-PIPERAZINOALKYL)-PYRAZOLE OF FORMULA I, AND A PYSIOLOGICALLY ACCEPTABLE ACID ADDITION SALT THEREOF
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) | 1971-02-05 | 1971-08-07 | 1972-02-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-02-05 | 1975-08-07 | 1976-02-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-02-05 | 1979-08-07 | 1980-02-06 | $7700.00 | Window Closed / Lapsed |