US2739115A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fluorine cell
Assignee: Pennsylvania Salt Manufacturing Co
•
Filing: 1952-06-19
•
Granted: 1956-03-20
•
Expires: 1972-06-19
Abstract
No abstract record available.
Inventors
- 👤 John F Gall
- 👤 Henry C Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:05
CPC Classifications
C; C25; C25B; C25B9/00; C25B9/60; C25B9/65
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
50 words
IN AN ELECTROLYTIC CELL FOR THE PRODUCTION OF FLUORINE, A CELL COVER HAVING AN OPENING PASSING THERETHROUGH AND A SUBSTANTIALLY VERTICALLY DISPOSED ANODE AND CATHODE, A GAS BARRIER HAVING A DOWNWARDLY EXTENDING PORTION EXTENDING THROUGH SAID COVER OPENING AND BETWEEN SAID ANODE AND CATHODE, SAID GAS BARRIER BEING SUPPORTED BY
Claim 2
Dependent Claim
50 words
IN AN ELECTROLYTIC CELL FOR THE PRODUCTION OF FLUORINE, A CELL COVER HAVING AN OPENING PASSING THERETHROUGH AND A SUBSTANTIALLY VERTICALLY DISPOSED ANODE AND CATHODE, A GAS BARRIER HAVING A DOWNWARDLY EXTENDING PORTION EXTENDING THROUGH SAID COVER OPENING AND BETWEEN SAID ANODE AND CATHODE, SAID GAS BARRIER BEING SUPPORTED BY
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Cited
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-20 | 1959-09-19 | 1960-03-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-20 | 1963-09-19 | 1964-03-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-20 | 1967-09-19 | 1968-03-20 | $7700.00 | Window Closed / Lapsed |