Patent US1826528A successfully refreshed from Google Patents.
Patent US1912410A successfully refreshed from Google Patents.
Patent US3345531A successfully refreshed from Google Patents.
Patent US1492920A successfully refreshed from Google Patents.
Patent US3133926A successfully refreshed from Google Patents.
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
2026-11-08 07:51
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 |