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US3188356A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for producing vinylidene fluoride
Assignee: Pennwalt Corp
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Filing: 1961-11-08
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Granted: 1965-06-08
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Expires: 1981-11-08
Abstract
No abstract record available.
Inventors
- 👤 Hauptschein Murray
- 👤 Arnold H Fainberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 10:30
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
41 words
A METHOD FOR PRODUCING VINYLIDENE FLUORIDE BY THE PYROLYTIC DEHYDROFLUORINATION OF 1,1,1-TRIFLUOROETHANE WHICH COMPRISES PASSING A STREAM OF SAID FLUOROETHANE THROUGH A REACTOR HEATED TO A TEMPERATURE OF 1050 TO 1500*C. AT A CONTACT IME OF LESS THAN ABOUT 0.3 SECOND.
Claim 2
Independent Claim
41 words
A METHOD FOR PRODUCING VINYLIDENE FLUORIDE BY THE PYROLYTIC DEHYDROFLUORINATION OF 1,1,1-TRIFLUOROETHANE WHICH COMPRISES PASSING A STREAM OF SAID FLUOROETHANE THROUGH A REACTOR HEATED TO A TEMPERATURE OF 1050 TO 1500*C. AT A CONTACT IME OF LESS THAN ABOUT 0.3 SECOND.
References Cited (Backward Citations)
US2480560A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-06-07 | 1968-12-07 | 1969-06-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-07 | 1972-12-07 | 1973-06-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-07 | 1976-12-07 | 1977-06-08 | $7700.00 | Window Closed / Lapsed |