US3819639A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-metatrifluoromethylanilino-pyridine-5-n-acetyl sulfonamide
Assignee: A Christiaens SA
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Filing: 1971-11-09
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Granted: 1974-06-25
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Expires: 1991-11-09
Abstract
Abstract COMPOUNDS OF FORMULAE R1,R2-PYRIDINE, (-N(-R6)-C(-R5)=N-SO2-)PYRIDINE AND (-CO-N(-R7)-SO2-)PYRIDINE WHEREIN R1 REPRESENTS A SULFONIC ACID, SULFONAMIDO GROUP WHEN R2 REPRESENTS A SUBSTITUTED ANILINO GROUP AND R1 REPRESENTS IN ADDITION TO THE ABOVE-INDICATED ROUPS, A CYANO, CARBOXY OR CARBOXAMIDO GROUP WHEN R2 REPRESENTS A N-LOWER ALKYLPIPERAZINO GROOUP; R5 AND R7 REPRESENT EACH A LOWER ALKYL GROUP AND R6 REPRESENTS HYDROGEN OR A LOWER ALKYL OR ARYL GROUP; AS WELL AS THE PHARMACEUTICALLY ACCEPTABLE SALTS THEREOF. THESE COMPOUNDS HAVE VALUABLE ANTI-INFLAMMATORY AND ANTI-PYRETIC PROPERTIES.
Inventors
- 👤 J Delarge
- 👤 L Thunus
- 👤 C Lapiere
- 👤 A Georges
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 05:20
CPC Classifications
C; C07; C07D; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/72; C07D213/74; C07D213/62; C07D213/70; C07D213/71; C07D213/78; C07D213/79; C07D213/80; C07D213/81; C07D213/82; C07D401/00; C07D401/02; C07D401/04; C07D401/12; C07D513/00; C07D513/02; C07D513/04
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |