US3798262A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfonylbenzenesulfonic acids
Assignee: Merck and Co Inc
•
Filing: 1969-12-09
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Granted: 1974-03-19
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Expires: 1989-12-09
Abstract
Abstract SULFONYLBENZENESULFONIC ACIDS AND SALTS AND ESTERS THEREOF WHEREIN THE BENZENE RING MAY BE SUBSTITUTED BY HALO, ALKYL, TRIHALOMETHYL, NITRO, CARBOXY OR A HYDROCARBYLENE MOIETY. THE PRODUCTS ARE PREPARED BY TREATING A SULFONYLBENZENESULFONYL HALIDE WITH WATER AND ARE USEFUL AS URICOSURIC AGENTS IN THE TREATMENT OF GOUT AND GOUTY ARTHRITIS.
Inventors
- 👤 C Ziegler
- 👤 J Sprague
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:30
CPC Classifications
C; C07; C07C; C07C317/00
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) | 1977-03-18 | 1977-09-17 | 1978-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-18 | 1981-09-17 | 1982-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-18 | 1985-09-17 | 1986-03-19 | $7700.00 | Window Closed / Lapsed |