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US2432601A
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Polymers of alpha-methylene cyclic acetals
Assignee: EIDP Inc
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Filing: 1942-12-12
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Granted: 1947-12-16
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Expires: 1962-12-12
Abstract
No abstract record available.
Inventors
- 👤 Wiley Richard Haven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:14
CPC Classifications
C; C08; C08F; C08F24/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US2095320A
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US2194405A
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GB340008A
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US2010828A
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US2129666A
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US2279436A
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US2189529A
Cited
US2297351A
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US2382640A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1950-12-15 | 1951-06-16 | 1951-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1954-12-15 | 1955-06-16 | 1955-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1958-12-15 | 1959-06-16 | 1959-12-16 | $7700.00 | Window Closed / Lapsed |