US3641104A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cyano substituted perfluorovinyl ethers
Assignee: EIDP Inc
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Filing: 1968-09-30
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Granted: 1972-02-08
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Expires: 1988-09-30
Abstract
Abstract SUBSTITUTED PERFLUOROVINYL ETHERS HAVING THE FORMULA CF=CF-O-(CF2)N-CN WHERE N IS FROM 2 TO 12, PREFERABLY 2 TO 4. SPECIFIC UTILITIES INCLUDE EMPLOYMENT AS CURE-SITE COMONOMERS IN COPOLYMERS WITH OTHER ETHYLENICALLY UNSATURATED MONOMERS.
Inventors
- 👤 Daniel Gustav Anderson
- 👤 Edward Karcher Gladding
- 👤 Raymond Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 06:24
CPC Classifications
C; C07; C07C; C07C59/00; C07C59/40; C07C59/58; C07C59/60; C08; C08F; C08F16/00; C08F16/12; C08F16/14; C08F16/24
Claims Analysis
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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) | 1975-02-07 | 1975-08-09 | 1976-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-07 | 1979-08-09 | 1980-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-07 | 1983-08-09 | 1984-02-08 | $7700.00 | Window Closed / Lapsed |