US2693445A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic method for production of fluorine
Assignee: Imperial Chemical Industries Ltd
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Filing: 1949-09-13
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Granted: 1954-11-02
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Expires: 1969-09-13
Abstract
No abstract record available.
Inventors
- 👤 Howell William Norman
- 👤 Hill Harold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 23:14
CPC Classifications
C; C25; C25B; C25B1/00; C25B1/01; C25B1/24; C25B1/245
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A PROCESS FOR THE PRODUCTION OF FLUORINE COMPRISING ELECTROLYZING SUBSTANTIALLY DRY MIXTURES OF FUSED FLUORIDES OF THE APPROXIMATE COMPOSITION KF.2HF; THE SAID ELECTROLYSIS BEING EFFECTED IN A CONTAINER OF SUITABLY RESISTANT MATERIAL BETWEEN A CATHODE OF MATERIAL RESISTANT TO THE ACTION OF THE ELECTROLYTE, AND AN ANODE OF POROUS CARBON ONLY PARTIALLY IMMERSED IN SAID ELECTROLYTE, SAID CARBON HAVING A PERMEABILITY OF NOT LESS THAN 5, THE UNIT OF PERMEABILITY BEING EXPRESSED IN TERMS OF THE NUMBER OF CUBIC FEED OF AIR WHICH CAN BE PASSED PER SQUARE FOOT OF SURFACE THROUGH ONE INCH THICKNESS OF THE CARBON PER MINUTE UNDER AN IMPOSED PRESSURE OF TWO INCHES OF WATER AND REMOVING THE GENERATED FLUORINE FROM THE SPACE ABOVE THE ANODE.
Claim 2
Dependent Claim
120 words
A PROCESS FOR THE PRODUCTION OF FLUORINE COMPRISING ELECTROLYZING SUBSTANTIALLY DRY MIXTURES OF FUSED FLUORIDES OF THE APPROXIMATE COMPOSITION KF.2HF; THE SAID ELECTROLYSIS BEING EFFECTED IN A CONTAINER OF SUITABLY RESISTANT MATERIAL BETWEEN A CATHODE OF MATERIAL RESISTANT TO THE ACTION OF THE ELECTROLYTE, AND AN ANODE OF POROUS CARBON ONLY PARTIALLY IMMERSED IN SAID ELECTROLYTE, SAID CARBON HAVING A PERMEABILITY OF NOT LESS THAN 5, THE UNIT OF PERMEABILITY BEING EXPRESSED IN TERMS OF THE NUMBER OF CUBIC FEED OF AIR WHICH CAN BE PASSED PER SQUARE FOOT OF SURFACE THROUGH ONE INCH THICKNESS OF THE CARBON PER MINUTE UNDER AN IMPOSED PRESSURE OF TWO INCHES OF WATER AND REMOVING THE GENERATED FLUORINE FROM THE SPACE ABOVE THE ANODE.
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) | 1957-11-01 | 1958-05-03 | 1958-11-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1961-11-01 | 1962-05-03 | 1962-11-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1965-11-01 | 1966-05-03 | 1966-11-02 | $7700.00 | Window Closed / Lapsed |