Patent US3644545A successfully refreshed from Google Patents.
US3644545A
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US
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Improved vapor phase fluorination procedure in the presence of catalyst and alkali metal fluoride
Assignee: Honeywell International Inc
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Filing: 1968-06-20
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Granted: 1972-02-22
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Expires: 1988-06-20
Abstract
Abstract HIGH CONVERSIONS OF FLUORINATED HYDROCARBONS ARE OBTAINED BY REACTING SATURATED, ALIPHATIC HALOCARBON STARTING MATERIALS CONTAINING AT LEAST ONE CHLORINE ATOM AND NO ATOMS OTHER THAN C, H, F OR CL, WITH HF, IN THE PRESENCE OF A CATALYST AND ALSO IN THE PRESENCE OF AN ALKALI METAL FLUORIDE.
Inventors
- 👤 Walter R Buckman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:09
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/20; C07C17/202; C07C17/206
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) | 1975-02-21 | 1975-08-23 | 1976-02-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-02-21 | 1979-08-23 | 1980-02-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-02-21 | 1983-08-23 | 1984-02-22 | $7700.00 | Window Closed / Lapsed |