Patent US3294852A successfully refreshed from Google Patents.
US3294852A
Expired / Lapsed
US
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Process for preparing fluorine containing organic compounds
Assignee: Edison SpA
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Filing: 1963-07-11
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Granted: 1966-12-27
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Expires: 1983-07-11
Abstract
No abstract record available.
Inventors
- 👤 Vecchlo Martino
- 👤 Canmarata Italo
- 👤 Lodi Luciano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:19
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/093; C07C17/20; C07C17/202; C07C17/206; C07C17/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
THE METHOD OF PREPARING CHLORO-FLUORINATED METHANE COMPRISING SUCCESSIVELY PASSING A MIXTURE OF HYDROGEN FLUORIDE, CHLORINE AND METHANE, TOGETHER WITH A MIXTURE OF HALOGENATED HYDROCARBONS SELECTED FROM THE GROUP CONSISTING OF FLUORINATED, CHLORINATED, AND CHLORO-FLUORINATED HYDROCARBONS HAVING A MAXIMUM OF TWO CARBON ATOMS, THROUGH TWO REACTION ZONES, ONE OF SAID ZONES BEING MAINTAINED IN THE TEMPERATURE RANGE OF 200*-360* C. AND CONTAINING A CATALYST SELECTED FROM THE GROUP CONSISTING OF FLUORIDES AND OXIDES OF A METAL FROM THE GROUP OF CHROMIUM, COBALT, NICKEL, ALUMINUM, THORIUM FLUORINATED ALUMINA; ACTIVATED CARBON IMPREGNATED WITH A METAL FLUORIDE FROM THE GROUP CONSISTING OF NICKEL, ALUMINUM, THORIUM, ZIRCCONIUM, PALLADIUM AND RARE EARTH FLUORIDES AND MIXTURES THEREOF, AND THE OTHER OF SAID ZONES BEING MAINTAINED IN THE TEMPERATURE RANGE OF ABOUT 350*-500* C. AND CONTAINING ACTIVATED CARBON.
Claim 2
Independent Claim
130 words
THE METHOD OF PREPARING CHLORO-FLUORINATED METHANE COMPRISING SUCCESSIVELY PASSING A MIXTURE OF HYDROGEN FLUORIDE, CHLORINE AND METHANE, TOGETHER WITH A MIXTURE OF HALOGENATED HYDROCARBONS SELECTED FROM THE GROUP CONSISTING OF FLUORINATED, CHLORINATED, AND CHLORO-FLUORINATED HYDROCARBONS HAVING A MAXIMUM OF TWO CARBON ATOMS, THROUGH TWO REACTION ZONES, ONE OF SAID ZONES BEING MAINTAINED IN THE TEMPERATURE RANGE OF 200*-360* C. AND CONTAINING A CATALYST SELECTED FROM THE GROUP CONSISTING OF FLUORIDES AND OXIDES OF A METAL FROM THE GROUP OF CHROMIUM, COBALT, NICKEL, ALUMINUM, THORIUM FLUORINATED ALUMINA; ACTIVATED CARBON IMPREGNATED WITH A METAL FLUORIDE FROM THE GROUP CONSISTING OF NICKEL, ALUMINUM, THORIUM, ZIRCCONIUM, PALLADIUM AND RARE EARTH FLUORIDES AND MIXTURES THEREOF, AND THE OTHER OF SAID ZONES BEING MAINTAINED IN THE TEMPERATURE RANGE OF ABOUT 350*-500* C. AND CONTAINING ACTIVATED CARBON.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-12-26 | 1970-06-27 | 1970-12-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-12-26 | 1974-06-27 | 1974-12-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-12-26 | 1978-06-27 | 1978-12-27 | $7700.00 | Window Closed / Lapsed |