US3652464A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Perfluoroalkylene ether and thioether triazine polymers
Assignee: Dow Silicones Corp
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Filing: 1970-11-12
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Granted: 1972-03-28
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Expires: 1990-11-12
Abstract
Abstract THE INVENTION PROVIDES TRIAZINES OF THE FORMULA X-CF2-(6-RF-S-TRIAZIN-2,4-YLENE)-Y-(6-RF-S-TRIAZIN-2,4- YLENE)-CF2-X Y BEING A PERFLUOROALKYLENE RADICAL CONTAINING AT LEAST ONE ETHER OR THIOETHER LINKAGE, RF BEING A MONOVALENT POLYFLUORINATED HYDROCARBON RADICAL OF NO MORE THAN 12 CARBON ATOMS, X BEING BROMINE OR IODINE. TRIAZINE POLYMERS OF THESE COMPOUNDS ARE ALSO DISCLOSED, AS HEAT-STABLE ELASTOMERS.
Inventors
- 👤 George A Grindahl
- 👤 John R Greenwald
- 👤 Ogden R Pierce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:50
CPC Classifications
C; C08; C08G; C08G61/00; C08G61/12
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) | 1975-03-28 | 1975-09-27 | 1976-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-28 | 1979-09-27 | 1980-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-28 | 1983-09-27 | 1984-03-28 | $7700.00 | Window Closed / Lapsed |