Patent US5361745A successfully refreshed from Google Patents.
Patent US2455896A successfully refreshed from Google Patents.
US2455896A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-aryl, 5-alkyl, biguanides
Assignee: Wyeth Holdings LLC
•
Filing: 1945-10-12
•
Granted: 1948-12-07
•
Expires: 1965-10-12
Abstract
No abstract record available.
Inventors
- 👤 Daniel E Nagy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:26
CPC Classifications
C; C07; C07C; C07C309/00; C07C309/01; C07C309/28; C07C309/45; C07C309/51; C07C279/00; C07C279/20; C07C279/24; C07C279/26
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
US2330376A
Cited
US2371111A
Cited
US1777738A
Cited
US2149709A
Cited
US2223935A
Cited
US2265944A
Cited
US2258321A
Cited
US2274412A
Cited
US2289541A
Cited
US2320225A
Cited
US2331377A
Cited
US2350453A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-12-07 | 1952-06-07 | 1952-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-12-07 | 1956-06-07 | 1956-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-12-07 | 1960-06-07 | 1960-12-07 | $7700.00 | Window Closed / Lapsed |