Patent US3829487A successfully refreshed from Google Patents.
US3829487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-substituted-3,5-(trifluoromethyl or bromo)benzenesulfonamides
Assignee: Merck and Co Inc
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Filing: 1973-02-08
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Granted: 1974-08-13
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Expires: 1993-02-08
Abstract
Abstract NOVEL SUBSTITUTED BENZENESULFONAMIDES ARE USEFUL AS AGENTS FOR THE TREATMENT OF BOTH MATURE AND IMMATURE LIVER FLUKE INFECTIONS. THE BENZENESULFONAMIDE IS SUBSTITUTED ON THE SULFONAMIDE NITROGEN WITH LOWERALKOXY, SUBSTITUTED 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 GROUP AT THE 4-POSITION. CMPOSITIONS 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 20:08
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/22; C07D295/26; C07C; C07C255/00; C07C311/00; C07C311/15; C07C311/16; C07D203/00; C07D203/04; C07D203/06; C07D203/22; C07D203/24
Claims Analysis
Total Claims: 0
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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) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |