US2849453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piperidines and their manufacture
Assignee: CIBA PHARM PROD Inc
•
Filing: 1954-12-20
•
Granted: 1958-08-26
•
Expires: 1974-12-20
Abstract
No abstract record available.
Inventors
- 👤 Hoffmann Karl
- 👤 Heer Jules
- 👤 Sury Ernst
- 👤 Urech Ernst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:45
CPC Classifications
A; A61; A61K; A61K31/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
12 words
A MEMBER OF THE GROUP CONSISTING OF PIPERIDINES OF THE FOLLOWING FORMULA:
Claim 2
Dependent Claim
12 words
A MEMBER OF THE GROUP CONSISTING OF PIPERIDINES OF THE FOLLOWING 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) | 1961-08-25 | 1962-02-24 | 1962-08-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-25 | 1966-02-24 | 1966-08-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-25 | 1970-02-24 | 1970-08-26 | $7700.00 | Window Closed / Lapsed |