Patent US2531367A successfully refreshed from Google Patents.
US2531367A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-(substituted sulfonyl)-aminobenzoic acids
Assignee: Sharp and Dohme Inc
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Filing: 1947-07-15
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Granted: 1950-11-21
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Expires: 1967-07-15
Abstract
No abstract record available.
Inventors
- 👤 James M Sprague
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 21:19
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/185; A61K31/19; A61K31/195
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
48 words
COMPOUNDS OF THE FORMULA: R1CH2SO2NHR2COOH IN WHICH R1 IS SELECTED FROM THE CLASS CONSISTING OF HYDROCARBON AND DIALKYL ETHER RADICALS HAVING A TOTAL OF FROM 3 TO 7 CARBON ATOMS, PHENYL, AMINOPHENYL, NITROPHENYL, HALOPHENYL, AND BENZYL, AND R2 IS SELECTED FROM THE CLASS CONSISTING OF BENZENE AND THIAZOLE.
Claim 2
Dependent Claim
48 words
COMPOUNDS OF THE FORMULA: R1CH2SO2NHR2COOH IN WHICH R1 IS SELECTED FROM THE CLASS CONSISTING OF HYDROCARBON AND DIALKYL ETHER RADICALS HAVING A TOTAL OF FROM 3 TO 7 CARBON ATOMS, PHENYL, AMINOPHENYL, NITROPHENYL, HALOPHENYL, AND BENZYL, AND R2 IS SELECTED FROM THE CLASS CONSISTING OF BENZENE AND THIAZOLE.
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) | 1953-11-20 | 1954-05-22 | 1954-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-20 | 1958-05-22 | 1958-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-20 | 1962-05-22 | 1962-11-21 | $7700.00 | Window Closed / Lapsed |