US2742475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Azacycloalkanes
Assignee: CIBA PHARM PROD Inc
•
Filing: 1953-02-20
•
Granted: 1956-04-17
•
Expires: 1973-02-20
Abstract
No abstract record available.
Inventors
- 👤 Hoffmann Karl
- 👤 Sury Ernst
- 👤 Tagmann Eugen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:06
CPC Classifications
C; C07; C07D; C07D401/00; C07D401/02; C07D401/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
32 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 3-R--PYRIDYL-(2'')-MONOXO-1-AZACYCLOALKANES, THE SALTS, AND THE QUATERNARY AMMONIUM COMPOUNDS THEREOF, WHICH IN THE FORM OF THE FREE BASE CAN BE REPRESENTED BY THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
32 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF 3-R--PYRIDYL-(2'')-MONOXO-1-AZACYCLOALKANES, THE SALTS, AND THE QUATERNARY AMMONIUM COMPOUNDS THEREOF, WHICH IN THE FORM OF THE FREE BASE CAN BE REPRESENTED BY THE FOLLOWING FORMULA:
References Cited (Backward Citations)
US2524643A
Cited
US2555353A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-04-17 | 1959-10-17 | 1960-04-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-04-17 | 1963-10-17 | 1964-04-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-04-17 | 1967-10-17 | 1968-04-17 | $7700.00 | Window Closed / Lapsed |