Patent US757970A successfully refreshed from Google Patents.
Patent US2519983A successfully refreshed from Google Patents.
US2519983A
Expired / Lapsed
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Electrochemical process of making fluorine-containing carbon compounds
Assignee: 3M Co
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Filing: 1948-11-29
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Granted: 1950-08-22
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Expires: 1968-11-29
Abstract
No abstract record available.
Inventors
- 👤 Joseph H Simons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 22:03
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/02; C07D307/04; C07D307/18; C07C; C07C53/00; C07C53/15; C07C53/23; C07C53/38; C07C53/46; C07C53/50; C07C61/00; C07C61/15; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/38; C07D213/00; C07D213/02; C07D213/04; C07D213/60; C07D213/61; C07D309/00; C07D309/02; C07D309/08; C25; C25B; C25B3/00; C25B3/01; C25B3/05; C25B3/07; C25B3/09; C25B3/11; C25B3/20; C25B3/27; C25B3/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
105 words
A NEW AND USEFUL ELECTROCHEMICAL PROCESS OF MAKING FLUORINE-CONTAINING CARBON COMPOUNDS FROM FLUORINATABLE ORGANIC STARTING COMPOUNDS, WHICH COMPRISES ELECTROLYZING FOR A PERIOD OF HOURS A CURRENT-CONDUCTING MIXTURE OF THE ORGANIC STARTING MATERIAL IN LIQUID HYDROGEN FLUORIDE FREE FROM WATER IN MORE THAN A SMALL PROPORTION AS HEREIN DESCRIBED, AT A TEMPERATURE AND PRESSURE AT WHICH A LIQUID STATE IS MATAINED AND AT A CELL VOLTAGE WHICH IS INSUFFICIENT TO GENERATE FREE FLUORINE UNDER THE EXISTING CONDITIONS BUT WHICH IS SUFFICIENT TO CAUSE THE PRODUCTION OF FLUORINE-CONTAINING CARBON COMPOUND PRODUCTS AT A USEFUL RATE, AND RECOVERING AT LEAST ONE FLUORINE-CONTAINING CARBON COMPOUND PRODUCT OF THE PROCESS.
Claim 2
Dependent Claim
105 words
A NEW AND USEFUL ELECTROCHEMICAL PROCESS OF MAKING FLUORINE-CONTAINING CARBON COMPOUNDS FROM FLUORINATABLE ORGANIC STARTING COMPOUNDS, WHICH COMPRISES ELECTROLYZING FOR A PERIOD OF HOURS A CURRENT-CONDUCTING MIXTURE OF THE ORGANIC STARTING MATERIAL IN LIQUID HYDROGEN FLUORIDE FREE FROM WATER IN MORE THAN A SMALL PROPORTION AS HEREIN DESCRIBED, AT A TEMPERATURE AND PRESSURE AT WHICH A LIQUID STATE IS MATAINED AND AT A CELL VOLTAGE WHICH IS INSUFFICIENT TO GENERATE FREE FLUORINE UNDER THE EXISTING CONDITIONS BUT WHICH IS SUFFICIENT TO CAUSE THE PRODUCTION OF FLUORINE-CONTAINING CARBON COMPOUND PRODUCTS AT A USEFUL RATE, AND RECOVERING AT LEAST ONE FLUORINE-CONTAINING CARBON COMPOUND PRODUCT OF THE PROCESS.
References Cited (Backward Citations)
US2186917A
Cited
US2220713A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-08-21 | 1954-02-20 | 1954-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-08-21 | 1958-02-20 | 1958-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-08-21 | 1962-02-20 | 1962-08-22 | $7700.00 | Window Closed / Lapsed |