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Patent US3085996A successfully refreshed from Google Patents.
US3085996A
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US
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Copolymer of 2, 3, 3, 3-tetrafluoropropene and fluorinated conjugated diolefins and the preparation thereof
Assignee: 3M Co
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Filing: 1960-07-18
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Granted: 1963-04-16
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Expires: 1980-07-18
Abstract
No abstract record available.
Inventors
- 👤 Elizabeth S Lo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 23:02
CPC Classifications
C; C08; C08F; C08F214/00; C08F214/18; C08F214/182; C08F236/00; C08F236/02; C08F236/04; C08F236/14; C08F236/16
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
32 words
A COPOLYMER OF 2,3,3,3-TETRAFLUOROPROPENE AND A HALOGENATED ACYCLIC CONJUGATED DIOLEFIN HAVING NO MORE THAN 8 CARBON ATOMS, HAVING ONLY OLEFINIC UNSATURATION AND HAVING A TERMINAL UNSATURATED CARBON ATOM BEARING TWO FLUORINE ATOMS.
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) | 1966-04-15 | 1966-10-15 | 1967-04-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-15 | 1970-10-15 | 1971-04-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-15 | 1974-10-15 | 1975-04-16 | $7700.00 | Window Closed / Lapsed |