US3556965A
Expired / Lapsed
US
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Anhydrous,irradiation tetrafluoroethylene-ethylene copolymerization
Assignee: Rai Research Corp
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Filing: 1968-10-04
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Granted: 1971-01-19
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Expires: 1988-10-04
Abstract
Abstract THIS DISCLOSURE IS DIRECTED TO THE GAS-PHASE, RADIATIONINDUCED, COPOLYMERIZATION OF TETRAFLUOROETHYLENE WITH ETHYLENE. FOR EXAMPLE, TETRAFLUOROETHYLENE AND ETHYLENE ARE COPOLYMERIZED AT ROOM TEMPERATURE UNDER ANHYDROUS CONDITIONS. THE RESULTING COPOLYMER HAS EXCELLENT PHYSICAL AND CHEMICAL CHARACTERISTICS, AND IS PARTICULARLY SUITABLE AS A DIELECTRIC MATERIAL.
Inventors
- 👤 Vincent F D Agostino
- 👤 Joseph Y C Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:49
CPC Classifications
C; C08; C08F; C08F214/00; C08F214/18; C08F214/26; C08F214/265; C08F10/00; Y; Y10; Y10S; Y10S522/00; Y10S522/911; Y10S522/912
Claims Analysis
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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) | 1974-01-18 | 1974-07-20 | 1975-01-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-18 | 1978-07-20 | 1979-01-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-18 | 1982-07-20 | 1983-01-19 | $7700.00 | Window Closed / Lapsed |