US3000801A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the electrolytic production of fluorine
Assignee: Imperial Chemical Industries Ltd
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Filing: 1959-07-15
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Granted: 1961-09-19
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Expires: 1979-07-15
Abstract
No abstract record available.
Inventors
- 👤 Davies Albert
- 👤 Rudge Alfred John
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:04
CPC Classifications
C; C25; C25B; C25B1/00; C25B1/01; C25B1/24; C25B1/245
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
100 words
A METHOD OF PRODUCING FLUORINE BY ELECTROLYSIS IN A CELL HAVING AN ELECTRICALLY-CONDUCTIVE BODY, AT A SUBSTANTIALLY VERTICAL GAS-PERMEABLE CARBON ANODE, THE UPPER PORTION OF WHICH IS SURROUNDED BY, BUT OUT OF CONTACT WITH, A GAS IMPERMEABLE BARRIER AND THE LOWER PORTION OF WHICH IS ADJACENT A CATHODE, WHICH COMPRISES PLACING IN THE CELL AN ELECTROLYTE COMPOSITION CONTAINING ABOUT 1 PART POTASSIUM FLUORIDE AND ABOUT 1.8 TO 2.2 PARTS HYDROGEN FLUORIDE, MAINTAINING THE COMPOSITION AT A TEMPERATURE OF 80 TO 110*C., PASSING ELECTRIC CURRENT BETWEEN THE ANODE AND THE CATHODE AND INTERNALLY COOLING SAID CATHODE BY PASSING COOLING MEDIUM THERETHROUGH.
Claim 2
Independent Claim
100 words
A METHOD OF PRODUCING FLUORINE BY ELECTROLYSIS IN A CELL HAVING AN ELECTRICALLY-CONDUCTIVE BODY, AT A SUBSTANTIALLY VERTICAL GAS-PERMEABLE CARBON ANODE, THE UPPER PORTION OF WHICH IS SURROUNDED BY, BUT OUT OF CONTACT WITH, A GAS IMPERMEABLE BARRIER AND THE LOWER PORTION OF WHICH IS ADJACENT A CATHODE, WHICH COMPRISES PLACING IN THE CELL AN ELECTROLYTE COMPOSITION CONTAINING ABOUT 1 PART POTASSIUM FLUORIDE AND ABOUT 1.8 TO 2.2 PARTS HYDROGEN FLUORIDE, MAINTAINING THE COMPOSITION AT A TEMPERATURE OF 80 TO 110*C., PASSING ELECTRIC CURRENT BETWEEN THE ANODE AND THE CATHODE AND INTERNALLY COOLING SAID CATHODE BY PASSING COOLING MEDIUM THERETHROUGH.
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) | 1964-09-18 | 1965-03-20 | 1965-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-09-18 | 1969-03-20 | 1969-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-09-18 | 1973-03-20 | 1973-09-19 | $7700.00 | Window Closed / Lapsed |