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US2459002A
Expired / Lapsed
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Preparation of acyl-nitroarylides
Assignee: Wyeth Holdings LLC
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Filing: 1944-09-26
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Granted: 1949-01-11
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Expires: 1964-09-26
Abstract
No abstract record available.
Inventors
- 👤 Parker Robert Prescott
- 👤 Reeves Richard Franklin
- 👤 Conn Robert Carland
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 02:30
CPC Classifications
C; C07; C07C; C07C233/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
DE57337C
Cited
US2337825A
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FR349566A
Cited
US1709256A
Cited
US1901322A
Cited
US1963597A
Cited
US2118494A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-01-11 | 1952-07-12 | 1953-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-01-11 | 1956-07-12 | 1957-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-01-11 | 1960-07-12 | 1961-01-11 | $7700.00 | Window Closed / Lapsed |