US3067263A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of 3, 3, 3-trifluoropropene
Assignee: Dow Chemical Co
•
Filing: 1959-10-05
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Granted: 1962-12-04
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Expires: 1979-10-05
Abstract
No abstract record available.
Inventors
- 👤 Iii John J Newport
- 👤 Olstowski Franciszek
- 👤 Creek Jones
- 👤 John D Watson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 13:51
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/26; C07C17/263; C07C17/266
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A PROCESS FOR PREPARING-3,3,3-TRIFLUOROPROPENE WHICH COMPRISES CONTACTING AT A TEMPERATURE OF FROM ABOUT 600*C. TO ABOUT 1000*C., ETHYLENE WITH A COMPOUND HAVING THE FORMULA CF3X, WHEREIN X IS A HALOGEN SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE, AND, SEPARATING 3,3,3-TRIFLUOROPROPENE FROM THE REACTION MIXTURE.
Claim 2
Dependent Claim
46 words
A PROCESS FOR PREPARING-3,3,3-TRIFLUOROPROPENE WHICH COMPRISES CONTACTING AT A TEMPERATURE OF FROM ABOUT 600*C. TO ABOUT 1000*C., ETHYLENE WITH A COMPOUND HAVING THE FORMULA CF3X, WHEREIN X IS A HALOGEN SELECTED FROM THE GROUP CONSISTING OF CHLORINE AND BROMINE, AND, SEPARATING 3,3,3-TRIFLUOROPROPENE FROM THE REACTION MIXTURE.
References Cited (Backward Citations)
CA576707A
Cited
US2603663A
Cited
US2551639A
Cited
US2579437A
Cited
FR1158447A
Cited
US2979539A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-12-03 | 1966-06-04 | 1966-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-03 | 1970-06-04 | 1970-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-03 | 1974-06-04 | 1974-12-04 | $7700.00 | Window Closed / Lapsed |