US2501188A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-(2'-methyl-4'-amino-5'-methoxyphenyl)-2, 1, 3 benzotriazole
Assignee: Wyeth Holdings LLC
•
Filing: 1947-10-22
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Granted: 1950-03-21
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Expires: 1967-10-22
Abstract
No abstract record available.
Inventors
- 👤 Robert P Parker
- 👤 Seruto Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:33
CPC Classifications
C; C07; C07D; C07D249/00; C07D249/16; C07D249/18; C07D249/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
FR754028A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-20 | 1953-09-19 | 1954-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-20 | 1957-09-19 | 1958-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-20 | 1961-09-19 | 1962-03-21 | $7700.00 | Window Closed / Lapsed |