US2367058A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pyridine-3-sulphonamide derivatives and processes for their production
Assignee: Wyeth Holdings LLC
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Filing: 1942-07-31
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Granted: 1945-01-09
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Expires: 1962-07-31
Abstract
No abstract record available.
Inventors
- 👤 Jr Richard O Roblin
- 👤 Richard C Clapp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:28
CPC Classifications
C; C07; C07D; C07D417/00; C07D417/02; C07D417/12
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) | 1948-01-09 | 1948-07-10 | 1949-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-01-09 | 1952-07-10 | 1953-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-01-09 | 1956-07-10 | 1957-01-09 | $7700.00 | Window Closed / Lapsed |