US2476270A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of 1, 1-dicyano ethylene by the pyrolysis of 1-acetoxy-1, 1-dicyano ethane
Assignee: Goodrich Corp
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Filing: 1947-11-12
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Granted: 1949-07-19
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Expires: 1967-11-12
Abstract
No abstract record available.
Inventors
- 👤 Alan E Ardis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 06:59
CPC Classifications
C; C07; C07C; C07C255/00; C08; C08F; C08F22/00; C08F22/30; C08F22/34
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2183357A
Cited
US2208328A
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US2328890A
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US2301131A
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US2396586A
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US2395930A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1952-07-18 | 1953-01-17 | 1953-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1956-07-18 | 1957-01-17 | 1957-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1960-07-18 | 1961-01-17 | 1961-07-19 | $7700.00 | Window Closed / Lapsed |