US3324016A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for preparing fluorine
Assignee: Dow Chemical Co
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Filing: 1964-06-05
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Granted: 1967-06-06
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Expires: 1984-06-05
Abstract
No abstract record available.
Inventors
- 👤 Horst G Langer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 03:55
CPC Classifications
C; C25; C25B; C25B1/00; C25B1/01; C25B1/24; C25B1/245
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
86 words
A METHOD FOR PREPARING ELEMENTAL FLUORINE WHICH COMPRISES, PROVIDING A REACTION MIXTURE OF AN INORGANIC METAL FLUORINE-CONTAINING SALT AND AN INORGANIC OXYGENCONTAINING SCAVENGING AGENT WHICH IS REACTIVE WITH THE METAL COMPONENT OF SAID FLUROINE-CONTAINING SALT, SAID SCAVENGING AGENT-TO-FLUORINE-CONTAINING SALT BEING PRESENT IN A MOLE RATIO OF AT LEAST ABOUT2, BASED ON THE OXYGENTO-FLUORINE CONTENT IN SAID REACTANTS, ELECTROLYZING SAID REACTION MIXTURE AT A TEMPERATURE WHITH THE RANGE OF FROM ABOUT 2000*C. TO ABOUT 3000*C. THEREBY TO LIBERATE ELEMENTAL GASEOUS FLUROINE THEREFROM, AND RECOVERING SAID GASEOUS FLUORINE.
Claim 2
Independent Claim
86 words
A METHOD FOR PREPARING ELEMENTAL FLUORINE WHICH COMPRISES, PROVIDING A REACTION MIXTURE OF AN INORGANIC METAL FLUORINE-CONTAINING SALT AND AN INORGANIC OXYGENCONTAINING SCAVENGING AGENT WHICH IS REACTIVE WITH THE METAL COMPONENT OF SAID FLUROINE-CONTAINING SALT, SAID SCAVENGING AGENT-TO-FLUORINE-CONTAINING SALT BEING PRESENT IN A MOLE RATIO OF AT LEAST ABOUT2, BASED ON THE OXYGENTO-FLUORINE CONTENT IN SAID REACTANTS, ELECTROLYZING SAID REACTION MIXTURE AT A TEMPERATURE WHITH THE RANGE OF FROM ABOUT 2000*C. TO ABOUT 3000*C. THEREBY TO LIBERATE ELEMENTAL GASEOUS FLUROINE THEREFROM, AND RECOVERING SAID GASEOUS FLUORINE.
References Cited (Backward Citations)
US2531046A
Cited
US2726928A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-06-05 | 1970-12-05 | 1971-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-06-05 | 1974-12-05 | 1975-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-06-05 | 1978-12-05 | 1979-06-06 | $7700.00 | Window Closed / Lapsed |