Patent US3025183A successfully refreshed from Google Patents.
US3025183A
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Cured elastomer and process of making same
Assignee: EIDP Inc
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Filing: 1956-06-22
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Granted: 1962-03-13
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Expires: 1976-06-22
Abstract
No abstract record available.
Inventors
- 👤 Yuan Edward Lung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 21:25
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/14; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10T; Y10T428/00; Y10T428/31504; Y10T428/3154; Y10T428/31544; Y10T428/31652; Y10T442/00; Y10T442/20; Y10T442/2631; Y10T442/2639; Y10T442/2713; Y10T442/2861; Y10T442/291; Y10T442/2926; Y10T442/2992
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
THE PROCESS OF CURING AN ELASTOMERIC COPOLYMER COMPRISING FROM ABOUT 70% TO 30% BYT WEIGHT OF VINYLIDENE FLUORIDE AND FROM ABOUT 30% TO 70% BY WEIGHT OF HEXAFLUOROPROPENE WHICH COMPRISES HEATING SAID COPOLYMER IN THE PRESENCE OF 1% TO 10% DICUMYL PEROXIDE BASED ON THE WEIGHT OF THE COPOLYMER AT ATEMPERATURE FROM ABOUT 300* F. TO ABOUT 400* F. FOR A LENGTH OF TIME SUFFICIENT TO THE CURE SAID COPOLYMER TO THE POINT OF INSOLUBILITY IN METHYL KETONE AT ROOM TEMPERATURE.
Claim 2
Dependent Claim
81 words
THE PROCESS OF CURING AN ELASTOMERIC COPOLYMER COMPRISING FROM ABOUT 70% TO 30% BYT WEIGHT OF VINYLIDENE FLUORIDE AND FROM ABOUT 30% TO 70% BY WEIGHT OF HEXAFLUOROPROPENE WHICH COMPRISES HEATING SAID COPOLYMER IN THE PRESENCE OF 1% TO 10% DICUMYL PEROXIDE BASED ON THE WEIGHT OF THE COPOLYMER AT ATEMPERATURE FROM ABOUT 300* F. TO ABOUT 400* F. FOR A LENGTH OF TIME SUFFICIENT TO THE CURE SAID COPOLYMER TO THE POINT OF INSOLUBILITY IN METHYL KETONE AT ROOM TEMPERATURE.
References Cited (Backward Citations)
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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) | 1965-03-12 | 1965-09-11 | 1966-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-03-12 | 1969-09-11 | 1970-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-03-12 | 1973-09-11 | 1974-03-13 | $7700.00 | Window Closed / Lapsed |