Patent US3684667A successfully refreshed from Google Patents.
US3684667A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of fluorine or volatile fluorine compounds using plasma jet anode
Assignee: Individual
•
Filing: 1970-07-27
•
Granted: 1972-08-15
•
Expires: 1990-07-27
Abstract
Abstract A PLASMA (I.E. AN ELECTRICALLY CONDUCTING ARC OR STREAM OF GAS) IS USED AS THE ANODE IN THE ELECTROLYSIS OF MOLTEN FLUORIDES, E.G. CALCIUM FLUORIDE, TO GIVE FLUORINE OR VOLATILE FLUORINE COMPOUNDS.
Inventors
- 👤 Ian George Sayce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 12:47
CPC Classifications
C; C25; C25B; C25B1/00; C25B1/01; C25B1/24; C25B1/245; C25B3/00; C25B3/01; C25B3/11; C25B3/20; C25B3/27; C25B3/28
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-15 | 1976-02-14 | 1976-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-15 | 1980-02-14 | 1980-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-15 | 1984-02-14 | 1984-08-15 | $7700.00 | Window Closed / Lapsed |