US3828079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-amino-3,5-(trifluoromethyl or bromo)benzene sulfonamides
Assignee: Merck and Co Inc
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Filing: 1973-01-30
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Granted: 1974-08-06
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Expires: 1993-01-30
Abstract
Abstract NOVEL SUBSTITUTED BENZENESULFONAMIDES ARE USEFUL AS AGENTS FOR THE TREATMENT OF BOTH MATURE AND IMMATURE LIVER FLUKE INFEFTIONS. THE BENZENSULFONAMIDE IS SUBSTITUTED ON THE SULFONAMIDE NITROGEN WITH LOWERALKOXY SUB STITUTED LOWERALKYL AND HETEROCYCLIC IN WHICH THE SULFONAMIDE NITROGEN IS INCLUDED IN THE HETEROCYCLIC RING. THE BENZENE RING IS VARIOUSLY SUBSTITUTED AT THE 3- AND 5-POSITIONS AND UNSUBSTITUTED OR SUBSTITUTED WITH AN AMINO GROUPS AT THE 4-POSITION. COMPOSITIONS CONTAINING THESE COMPOUNDS FOR THE TREATMENT OF MATURE AND IMMATURE LIVER FLUKE INFESTATION ARE ALSO DISCLOSED.
Inventors
- 👤 H Mrozik
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 19:53
CPC Classifications
C; C07; C07C; C07C311/00; C07C311/30; C07C311/37; C07C311/38; C07C311/39; C07C311/40; C07C317/00; C07C317/26; C07C317/28; C07C323/00; C07C323/23; C07C323/46; C07C323/49
Claims Analysis
Total Claims: 0
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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) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |