US3674794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Certain-3-pyridine-sulfonamide derivatives
Assignee: Novartis Corp
•
Filing: 1970-03-18
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Granted: 1972-07-04
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Expires: 1990-03-18
Abstract
Abstract New 4-arylamino-3-pyridinesulfonic acids, e.g. those of the formula THE N-oxide, esters and salts thereof, are diuretics.
Inventors
- 👤 Renat Herbert Mizzoni
- 👤 Herbert Morton Blatter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:53
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/72; C07D213/74; C07D213/62; C07D213/70; C07D213/71
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
54 words
A compound as claimed in claim 1, in which formula Ph is phenyl, mono- or dimethylphenyl, mono-, di- or trimethoxyphenyl, mono- or difluorophenyl, mono- or dichlorophenyl, bromophenyl, (chloro, methyl)-phenyl, (chloro, trifluoromethyl)-phenyl, mono-or bis-trifluoromethylphenyl, dimethylaminophenyl, and each of R2, R3, R4 and R5 is hydrogen or methyl or a therapeutically useful acid addition salt thereof.
Claim 2
Dependent Claim
11 words
A compound as claimed in claim 1, and being the 4-(34-(3-trifluoromethylphenylamino)-3-pyridinesulfonamide.
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) | 1975-07-04 | 1976-01-03 | 1976-07-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-04 | 1980-01-03 | 1980-07-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-04 | 1984-01-03 | 1984-07-04 | $7700.00 | Window Closed / Lapsed |