US3133926A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-(pyridyl-lower alkyl)-1, 2, 3, 4-tetrahydro-isoquinolines
Assignee: BASF Corp
•
Filing: 1961-05-23
•
Granted: 1964-05-19
•
Expires: 1981-05-23
Abstract
No abstract record available.
Inventors
- 👤 Kuehne Martin Eric
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:58
CPC Classifications
C; C07; C07D; C07D401/00; C07D401/02; C07D401/06
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
12 words
A MEMBER SELECTED FROM THE GROUP CONSISTIANG OF COMPOUNDS OF THE FORMULA:
Claim 2
Dependent Claim
12 words
A MEMBER SELECTED FROM THE GROUP CONSISTIANG OF COMPOUNDS OF THE FORMULA:
Claim 3
Dependent Claim
10 words
A PHARMACOLOGICALLY ACCEPTABLE, NON-TOXIC ACID ADDITION SALT OF 6,4-DIMETHOXY-2-LOWER ALKYL-1(2-(PYRIDYL)-ETHYL)-1,2,3,4-TETRAHYDRO-ISOQUINOLINE.
Claim 4
Dependent Claim
10 words
A PHARMACOLOGICALLY ACCEPTABLE, NON-TOXIC ACID ADDITION SALT OF 6,4-DIMETHOXY-2-LOWER ALKYL-1(2-(PYRIDYL)-ETHYL)-1,2,3,4-TETRAHYDRO-ISOQUINOLINE.
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) | 1967-05-19 | 1967-11-18 | 1968-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-19 | 1971-11-18 | 1972-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-19 | 1975-11-18 | 1976-05-19 | $7700.00 | Window Closed / Lapsed |