Patent US3841831A successfully refreshed from Google Patents.
Patent US3706790A successfully refreshed from Google Patents.
US3706790A
Expired / Lapsed
US
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(mono-and di-substituted sulfamoyl) benzoic acids
Assignee: Merck and Co Inc
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Filing: 1970-02-27
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Granted: 1972-12-19
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Expires: 1990-02-27
Abstract
Abstract (Mono- and di-substituted sulfamoyl)benzoic acids and the salt, ester and amide derivatives thereof wherein the benzene ring may be substituted by one or more halo, lower alkyl, trihalomethyl, sulfamoyl, alkylsulfonyl, nitro, carboxy, amino, halosulfonyl or hydrocarbylene radicals. The products are prepared by treating a halosulfonylbenzoic acid with a primary or secondary amine and are useful as uricosuric agents in the treatment of gout and gouty arthritis.
Inventors
- 👤 James M Sprague
- 👤 Carl ZIEGLER
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 23:14
CPC Classifications
C; C07; C07C; C07C311/00; C07C311/30; C07C311/37
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
38 words
A compound according to Claim 1 of the formula: wherein R2 and R3 are lower alkyl; X3 is halo or lower alkylsulfonyl and X4 is hydrogen or halo and the alkali metal or alkaline earth metal salts thereof.
Claim 2
Dependent Claim
19 words
A compound according to claim 2 wherein R2 and R3 are lower alkyl and X3 and X4 are halo.
Claim 3
Dependent Claim
18 words
A compound according to claim 3 wherein R2 and R3 are n-propyl and X3 and X4 are chloro.
References Cited (Backward Citations)
US3050553A
Cited
US3493584A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |