Patent US3681382A successfully refreshed from Google Patents.
US3681382A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-aminoindazoles
Assignee: Novartis Corp
•
Filing: 1969-02-07
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Granted: 1972-08-01
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Expires: 1989-02-07
Abstract
Abstract NEW 1-ARYL-3-AMINOINDAZOLES, E.G., THOSE OF THE FORMULA
Inventors
- 👤 Heinz Werner Gschwend
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:29
CPC Classifications
C; C07; C07D; C07D231/00; C07D231/54; C07D231/56
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
55 words
A compound as claimed in claim 1, in which formula R4 is phenyl, 4-(fluoro or chloro)-phenyl, R5 is hydrogen and Am is methylamino, ethylamino, dimethylamino, diethylamino, pyrrolidino, piperidino, piperazino, 4-methylpiperazino or 4-ethylpiperazino, alk is methylene, 1,1- or 1,2-ethylene, Z is oxo or 2 hydrogens and R6 is hydrogen, or therapeutically useful acid addition salts thereof.
Claim 2
Dependent Claim
18 words
A compound as claimed in claim 1 aNd being the 1-(4-fluorophenyl)-3-(2-dimethylaminoethylamino)-indazole or therapeutically useful acid addition salts thereof.
Claim 3
Dependent Claim
18 words
A compound as claimed in claim 1 and being the 1-(4-chlorophenyl)-3-piperazinoacetylamino-indazole or therapeutically useful acid addition salts thereof.
References Cited (Backward Citations)
US3133081A
Cited
US3301482A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-01 | 1976-01-31 | 1976-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-01 | 1980-01-31 | 1980-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-01 | 1984-01-31 | 1984-08-01 | $7700.00 | Window Closed / Lapsed |