Patent EP0032818A2 successfully refreshed from Google Patents.
Patent US2909548A successfully refreshed from Google Patents.
US2909548A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Copolymers of mono-vinyl methyl siloxanes and chlorotrifluoroethylene
Assignee: Union Carbide Corp
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Filing: 1956-03-27
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Granted: 1959-10-20
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Expires: 1976-03-27
Abstract
No abstract record available.
Inventors
- 👤 Donald L Bailey
- 👤 Ronald M Pike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:18
CPC Classifications
C; C08; C08F; C08F230/00; C08F230/04; C08F230/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
84 words
A COPOLYMER OF CHLOROTRIFLUOROETHYLENE AND A MONOVINYL METHYLSILOXANE, THE MOLECULES OF SAID COPOLYMER BEING COMPOSED OF LINEAR CARBON CHAINS WHEREIN EACH OF CERTAIN CARBON ATOMS WITHIN THE CHAIN HAS TWO PENDANT HYDROGEN ATOMS, EACH OF CERTAIN OTHER CARBON ATOMS WITHIN THE CHAIN HAS TWO PENDANT FLUORINE ATOMS, EACH OF CERTAIN OTHER CARBON ATOMS WITHIN THE CHAIN HAS ONE PENDANT FLUORINE ATOM AND ONE PENDANT CHLORINE ATOM, AND EACH REMAINING CARBON ATOM WITHIN THE CHAIN HAS ONE PENDANT HYDROGEN ATOM AND ONE PENDANT METHYLSILOXANE GROUP.
Claim 2
Dependent Claim
84 words
A COPOLYMER OF CHLOROTRIFLUOROETHYLENE AND A MONOVINYL METHYLSILOXANE, THE MOLECULES OF SAID COPOLYMER BEING COMPOSED OF LINEAR CARBON CHAINS WHEREIN EACH OF CERTAIN CARBON ATOMS WITHIN THE CHAIN HAS TWO PENDANT HYDROGEN ATOMS, EACH OF CERTAIN OTHER CARBON ATOMS WITHIN THE CHAIN HAS TWO PENDANT FLUORINE ATOMS, EACH OF CERTAIN OTHER CARBON ATOMS WITHIN THE CHAIN HAS ONE PENDANT FLUORINE ATOM AND ONE PENDANT CHLORINE ATOM, AND EACH REMAINING CARBON ATOM WITHIN THE CHAIN HAS ONE PENDANT HYDROGEN ATOM AND ONE PENDANT METHYLSILOXANE GROUP.
Claim 3
Dependent Claim
40 words
A PROCESS FOR PRODUCING A COPOLYMER COMPOSED OF CARBON CHAINS HAVING PENDANT HALOGEN AND HYDROGEN ATOMS AND METHYLSILOXANE GROUPS, COMPRISING FORMING A MIXTURE OF CHLOROTRIFLUOROETHYLENE, A MONO-VINYL SILOXANE AND A VINYL POLYMERIZATION CATALYST, SAID MONO-VINYL SILOXANE HAVING THE GRAPHICAL FORMULA
Claim 4
Dependent Claim
40 words
A PROCESS FOR PRODUCING A COPOLYMER COMPOSED OF CARBON CHAINS HAVING PENDANT HALOGEN AND HYDROGEN ATOMS AND METHYLSILOXANE GROUPS, COMPRISING FORMING A MIXTURE OF CHLOROTRIFLUOROETHYLENE, A MONO-VINYL SILOXANE AND A VINYL POLYMERIZATION CATALYST, SAID MONO-VINYL SILOXANE HAVING THE GRAPHICAL FORMULA
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-10-19 | 1963-04-20 | 1963-10-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-10-19 | 1967-04-20 | 1967-10-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-10-19 | 1971-04-20 | 1971-10-20 | $7700.00 | Window Closed / Lapsed |