Patent US2676996A successfully refreshed from Google Patents.
US2676996A
Expired / Lapsed
US
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Production of fluorine compounds rich in fluorine
Assignee: Honeywell International Inc
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Filing: 1951-08-03
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Granted: 1954-04-27
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Expires: 1971-08-03
Abstract
No abstract record available.
Inventors
- 👤 Charles B Miller
- 👤 John D Calfee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:34
CPC Classifications
C; C07; C07C; C07C17/00; C07C17/37
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
THE PROCESS FOR DISPROPROTIONATING A GASEOUS MATERIAL COMPRISING A COMPLETELY HALOGENATED FLUORO DERIVATIVE OF METHANE CONTAINING NOT MORE THAN TWO FLUORINE ATOMS AND AT LEAST ONE HALOGEN ATOM OTHER THAN FLUORINE, WHICH PROCESS COMPRISES HEATING SAID MATERIAL FREE OF LIQUID PHASE AT TEMPERATURE SUBSTANTIALLY IN THE RANGE OF 75-400* C. IN THE PRESENCE OF ALUMINUM FLUORIDE CATALYST HAVING CRYSTALLITE SIZE BELOW ABOUT 500 ANGSTROM UNITS RADIUS, FOR A TIME SUFFICIENT TO DISPROPORTIONATE A SUBSTANTIAL AMOUNT OF SAID MATERIAL TO FORM A COMPOUND RICHER IN FLUORINE.
Claim 2
Dependent Claim
85 words
THE PROCESS FOR DISPROPROTIONATING A GASEOUS MATERIAL COMPRISING A COMPLETELY HALOGENATED FLUORO DERIVATIVE OF METHANE CONTAINING NOT MORE THAN TWO FLUORINE ATOMS AND AT LEAST ONE HALOGEN ATOM OTHER THAN FLUORINE, WHICH PROCESS COMPRISES HEATING SAID MATERIAL FREE OF LIQUID PHASE AT TEMPERATURE SUBSTANTIALLY IN THE RANGE OF 75-400* C. IN THE PRESENCE OF ALUMINUM FLUORIDE CATALYST HAVING CRYSTALLITE SIZE BELOW ABOUT 500 ANGSTROM UNITS RADIUS, FOR A TIME SUFFICIENT TO DISPROPORTIONATE A SUBSTANTIAL AMOUNT OF SAID MATERIAL TO FORM A COMPOUND RICHER IN FLUORINE.
References Cited (Backward Citations)
US2478201A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1957-04-26 | 1957-10-26 | 1958-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-04-26 | 1961-10-26 | 1962-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-04-26 | 1965-10-26 | 1966-04-27 | $7700.00 | Window Closed / Lapsed |