US3136745A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastomeric copolymers of vinylidene fluoride and perfluoroalkyl perfluorovinyl ethers
Assignee: EIDP Inc
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Filing: 1961-06-23
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Granted: 1964-06-09
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Expires: 1981-06-23
Abstract
No abstract record available.
Inventors
- 👤 Albin Jerry Richard
- 👤 Gallagher George Arthur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:34
CPC Classifications
C; C08; C08F; C08F214/00; C08F214/18; C08F214/22; C08F214/222; C08F16/00; C08F16/12; C08F16/14; C08F16/24
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
37 words
AN ELASTOMERIC COPOLYMER CONSISTING OF THE FOLLOWING MONOMER UNITS: (A) FROM 83 TO 25 MOL PERCENT OF VINYLIDENE FLUORIDE UNITS (-CH2-CF2-) AND (B) FROM 17 TO 75 MOL PERCENT OF PERFLUOROALKYL PERFLUOROVINYL ETHER UNITS HAVING THE STRUCTURE
Claim 2
Dependent Claim
37 words
AN ELASTOMERIC COPOLYMER CONSISTING OF THE FOLLOWING MONOMER UNITS: (A) FROM 83 TO 25 MOL PERCENT OF VINYLIDENE FLUORIDE UNITS (-CH2-CF2-) AND (B) FROM 17 TO 75 MOL PERCENT OF PERFLUOROALKYL PERFLUOROVINYL ETHER UNITS HAVING THE STRUCTURE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1967-06-09 | 1967-12-09 | 1968-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-06-09 | 1971-12-09 | 1972-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-06-09 | 1975-12-09 | 1976-06-09 | $7700.00 | Window Closed / Lapsed |