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US2425693A
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US
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Preparation of aminopropionitriles
Assignee: Wyeth Holdings LLC
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Filing: 1944-11-22
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Granted: 1947-08-12
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Expires: 1964-11-22
Abstract
No abstract record available.
Inventors
- 👤 Elmer W Cook
- 👤 Philip H Moss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:10
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/14; C07D295/145; C07D295/15; C07C; C07C255/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2017051A
Cited
US1992615A
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US2085679A
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US2211152A
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US2349222A
Cited
US2335605A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-08-11 | 1951-02-10 | 1951-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-08-11 | 1955-02-10 | 1955-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-08-11 | 1959-02-10 | 1959-08-12 | $7700.00 | Window Closed / Lapsed |