US2437962A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of allyl esters of polybasic acid with saturated monohydric alcohol esters of unsaturated polycarboxylic acid
Assignee: Wyeth Holdings LLC
•
Filing: 1943-08-17
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Granted: 1948-03-16
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Expires: 1963-08-17
Abstract
No abstract record available.
Inventors
- 👤 Edward L Kropa
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:27
CPC Classifications
C; C08; C08F; C08F36/00; C08F36/02; C08F36/20
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
US1945307A
Cited
US2155590A
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US2182316A
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US2218439A
Cited
US2273891A
Cited
US2298039A
Cited
US2310731A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1951-03-16 | 1951-09-15 | 1952-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1955-03-16 | 1955-09-15 | 1956-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1959-03-16 | 1959-09-15 | 1960-03-16 | $7700.00 | Window Closed / Lapsed |