US3284457A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-lower alkyl-4-substituted phenyl-1, 2, 3, 6-tetrahydropyridines and acid addition salts
Assignee: Evonik Operations GmbH
•
Filing: 1965-01-08
•
Granted: 1966-11-08
•
Expires: 1985-01-08
Abstract
No abstract record available.
Inventors
- 👤 Beschke Helmut
- 👤 Schuler Wilhelm Alfons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:40
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/68; C07D211/70
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF SUBSTITUTED PHENYLTETRAHTDROPYRIDINES OF THE FORMULA 4-(X-PHENYL),1-ALK-1,2,3,6-TETRAHYDROPYRIDINE WHEREIN X IS SELECTED FROM THE GROUP CONSISTING OF HALOGEN ATOMS AND TRIFLUOROMETHYL AND ALK IS ALKYL OF 1 TO 6 CARBON ATOMS AND ITS ACID ADDITION SALTS WITH PHARMACEUTICALLY ACCEPTABLE ACIDS.
Claim 2
Dependent Claim
46 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF SUBSTITUTED PHENYLTETRAHTDROPYRIDINES OF THE FORMULA 4-(X-PHENYL),1-ALK-1,2,3,6-TETRAHYDROPYRIDINE WHEREIN X IS SELECTED FROM THE GROUP CONSISTING OF HALOGEN ATOMS AND TRIFLUOROMETHYL AND ALK IS ALKYL OF 1 TO 6 CARBON ATOMS AND ITS ACID ADDITION SALTS WITH PHARMACEUTICALLY ACCEPTABLE ACIDS.
References Cited (Backward Citations)
US2748140A
Cited
US2928767A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-11-07 | 1970-05-09 | 1970-11-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-11-07 | 1974-05-09 | 1974-11-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-11-07 | 1978-05-09 | 1978-11-08 | $7700.00 | Window Closed / Lapsed |