Patent US3719683A successfully refreshed from Google Patents.
US3719683A
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Imidazo(4,5-b)pyridines
Assignee: Novartis Corp
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Filing: 1970-11-20
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Granted: 1973-03-06
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Expires: 1990-11-20
Abstract
Abstract 1-Aminoalkyl-2,3-dihydro-imidazo(4,5-b)pyridines, e.g. those of the formula Am an amino group ALK ALKYLENE WITH AT LEAST 2C X O or S R H, aliphatic, araliphatic or aromatic radical ACYL DERIVATIVES, N-oxides, quaternaries or salts thereof are antidepressants.
Inventors
- 👤 M Robison
- 👤 N Finch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:54
CPC Classifications
C; C07; C07D; C07D471/00; C07D471/02; C07D471/04
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
5 words
A 1-aminoalkyl-2,3-dihydro-imidazo-(4,5-b)pyridine of the formula
Claim 2
Dependent Claim
5 words
A 1-aminoalkyl-2,3-dihydro-imidazo-(4,5-b)pyridine of the formula
Claim 3
Dependent Claim
11 words
A compound as claimed in claim 1 and having the formula
Claim 4
Dependent Claim
53 words
A compound as claimed in claim 3, in which formula Am1 is mono- or dimethylamino, p is the integer 2 or 3, X is oxygen R1 is cyclopentyl, cyclohexyl, cycloheptyl, benzyl, (chloro)-benzyl, phenyl, (methoxy)n-phenyl, (fluoro)-phenyl or (chloro)-phenyl and n is an integer from 1 to 3, or therapeutically accept-able acid addition salts thereof.
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) | 1976-03-05 | 1976-09-04 | 1977-03-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-05 | 1980-09-04 | 1981-03-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-05 | 1984-09-04 | 1985-03-06 | $7700.00 | Window Closed / Lapsed |