US2965619A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cross-linking of fluorinated elastomers
Assignee: 3M Co
•
Filing: 1953-04-03
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Granted: 1960-12-20
•
Expires: 1973-04-03
Abstract
No abstract record available.
Inventors
- 👤 Francis J Honn
- 👤 Willard M Sims
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:35
CPC Classifications
C; C08; C08L; C08L27/00; C08L27/22; C08K; C08K13/00; C08K13/02
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
A CROSS-LINKED ELASTOMER COMPRISING LINEAR COPOLYMER CHAINS CONTAINING ONLY CARBON, HYDROGEN AND HALOGEN ATOMS SELECTED FROM AT LEAST ONE OF THE GROUP CONSISTING OF FLUORINE, CHLORINE AND BROMINE AND CONTAINING AT LEAST 10 PERCENT OF ITS CARBON ATOMS LINKED ONLY TO HYDROGEN AND OTHER CARBON ATOMS, OF AN ETHYLENICALLY UNSATURATED COMONOMER CONTAINING AT LEAST TWO FLUORINE ATOMS AND A DIFFERENT MONOOLEFINIC COMONOMER CONTAINING NOT MORE THAN FOUR CARBON ATOMS WHICH IS AT LEAST HALF HALOGENATED, SAID LINEAR COPOLYMER CHAINS BEING CROSS-LINKED DIRECTLY BY A BOND BETWEEN A CARBON ATOM OF ONE CHAIN AND A CARBON ATOM OF ANOTHER CHAIN.
Claim 2
Dependent Claim
99 words
A CROSS-LINKED ELASTOMER COMPRISING LINEAR COPOLYMER CHAINS CONTAINING ONLY CARBON, HYDROGEN AND HALOGEN ATOMS SELECTED FROM AT LEAST ONE OF THE GROUP CONSISTING OF FLUORINE, CHLORINE AND BROMINE AND CONTAINING AT LEAST 10 PERCENT OF ITS CARBON ATOMS LINKED ONLY TO HYDROGEN AND OTHER CARBON ATOMS, OF AN ETHYLENICALLY UNSATURATED COMONOMER CONTAINING AT LEAST TWO FLUORINE ATOMS AND A DIFFERENT MONOOLEFINIC COMONOMER CONTAINING NOT MORE THAN FOUR CARBON ATOMS WHICH IS AT LEAST HALF HALOGENATED, SAID LINEAR COPOLYMER CHAINS BEING CROSS-LINKED DIRECTLY BY A BOND BETWEEN A CARBON ATOM OF ONE CHAIN AND A CARBON ATOM OF ANOTHER CHAIN.
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) | 1963-12-20 | 1964-06-20 | 1964-12-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-12-20 | 1968-06-20 | 1968-12-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-12-20 | 1972-06-20 | 1972-12-20 | $7700.00 | Window Closed / Lapsed |