Patent US2050277A successfully refreshed from Google Patents.
US2465731A
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Allyl halogeno silicanes and processes of preparing same
Assignee: Wyeth Holdings LLC
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Filing: 1944-08-01
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Granted: 1949-03-29
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Expires: 1964-08-01
Abstract
No abstract record available.
Inventors
- 👤 Edward L Kropa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:46
CPC Classifications
C; C08; C08G; C08G77/00; C08G77/04; C08G77/20; C07; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/12; C07F7/121; C07F7/122
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2389802A
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US2258218A
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US2386793A
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US2397727A
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US2377689A
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US2398187A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-03-28 | 1952-09-27 | 1953-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-03-28 | 1956-09-27 | 1957-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-03-28 | 1960-09-27 | 1961-03-29 | $7700.00 | Window Closed / Lapsed |