US2554737A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Basically substituted tetrahydroquinoline derivatives
Assignee: Novartis AG
•
Filing: 1950-07-06
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Granted: 1951-05-29
•
Expires: 1970-07-06
Abstract
No abstract record available.
Inventors
- 👤 Haefliger Franz
- 👤 Schindler Walter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 16:04
CPC Classifications
C; C07; C07D; C07D215/00; C07D215/02; C07D215/16; C07D215/38; C07D409/00; C07D409/02; C07D409/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
25 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF BASICALLY SUBSTITUTED TETRAHYDROQUINOLINES AND THEIR WATER SOLUBLE ACID ADDITION SALTS, THE BASICALLY SUBSTITUTED TETRAHYDROQUINOLINES HAVING THE FORMULA:
Claim 2
Dependent Claim
25 words
A COMPOUND SELECTED FROM THE GROUP CONSISTING OF BASICALLY SUBSTITUTED TETRAHYDROQUINOLINES AND THEIR WATER SOLUBLE ACID ADDITION SALTS, THE BASICALLY SUBSTITUTED TETRAHYDROQUINOLINES HAVING THE 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) | 1954-05-28 | 1954-11-27 | 1955-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-05-28 | 1958-11-27 | 1959-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-05-28 | 1962-11-27 | 1963-05-29 | $7700.00 | Window Closed / Lapsed |