Patent US2384239A successfully refreshed from Google Patents.
US2384239A
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Polymeric material obtained by polymerizing a mixture of a conjugated diene and a cyclic imide of an olefinic dicarboxylic acid
Assignee: EIDP Inc
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Filing: 1941-01-02
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Granted: 1945-09-04
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Expires: 1961-01-02
Abstract
No abstract record available.
Inventors
- 👤 Dorough George Lowrance
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:51
CPC Classifications
C; C08; C08F; C08F236/00; C08F236/02; C08F236/04; C08F236/14; C08F236/16
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1948-09-03 | 1949-03-05 | 1949-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1952-09-03 | 1953-03-05 | 1953-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1956-09-03 | 1957-03-05 | 1957-09-04 | $7700.00 | Window Closed / Lapsed |