Patent US3740369A successfully refreshed from Google Patents.
US3740369A
Expired / Lapsed
US
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Low viscosity solution of fluoropolymer due to the use of polar organic compounds
Assignee: EIDP Inc
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Filing: 1971-06-25
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Granted: 1973-06-19
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Expires: 1991-06-25
Abstract
Abstract A FLUOROPOLYMER SOLUTION COMPOSITION HAVING A LOWER THAN EXPECTED VISCOSITY IS OBTAINED BY MIXING TOGETHER CERTAIN PROPORATIONS OF A COPOLYMER OF TETRAFLUOROETHYLENE AND A PERFLUOROALKYL PERFLUOROVINYL ETHER, A SUITABLE FLUORINATED SOLVENT, AND A POLAR ORGANIC COMPOUND WHOSE MELTING POINT IS BELOW 7/*C. AND WHOSE MOLECULAR WEIGHT IS BELOW 400.
Inventors
- 👤 S Proskow
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 04:49
CPC Classifications
C; C09; C09D; C09D127/00; C09D127/02; C09D127/12
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) | 1976-06-18 | 1976-12-18 | 1977-06-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-06-18 | 1980-12-18 | 1981-06-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-06-18 | 1984-12-18 | 1985-06-19 | $7700.00 | Window Closed / Lapsed |