US2575168A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rodenticide comprising 4-aminopteroylglutamic acid
Assignee: Wyeth Holdings LLC
•
Filing: 1948-07-22
•
Granted: 1951-11-13
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Expires: 1968-07-22
Abstract
No abstract record available.
Inventors
- 👤 Alfred L Franklin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 21:45
CPC Classifications
C; C07; C07D; C07D487/00; C07D487/02; C07D487/04; A; A01; A01N; A01N37/00; A01N37/44; A01N37/46
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US222413A
Cited
US2390848A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-11-12 | 1955-05-14 | 1955-11-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-11-12 | 1959-05-14 | 1959-11-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-11-12 | 1963-05-14 | 1963-11-13 | $7700.00 | Window Closed / Lapsed |