US3684670A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic cell
Assignee: PPG Industries Inc
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Filing: 1971-04-19
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Granted: 1972-08-15
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Expires: 1991-04-19
Abstract
Abstract DISCLOSED IS AN ELECTROLYTIC CELL FOR THE CONTINUOUS PRODUCTION OF ALKALI METAL CHLORATES FROM ALKALI METAL CHLORIDES HAVING A CATHODE WHICH INCLUDES A PERVIOUS PLATE WITH A SURFACE THAT IS SLOPED WITH RESPECT TO THE VERTICAL. ELECTROLYSIS TAKES PLACE IN THE AREA BETWEEN THE ANODE AND THE PERVIOUS PLATE. GASEOUS PRODUCTS PRODUCED ADJACENT THE PERVIOUS PLATE ARE PASSED IMMEDIATELY THROUGH THE OPENINGS IN THE PERVOUS PLATE AND OUT OF THE ELECTROLIZING AREA, THEREBY PREVENTING GAS BLINDING OF THE ELECTRODES AND PRODUCING CIRCULATION AND BACK MIXING OF THE SOLUTION WITHIN THE CELL. D R A W I N G
Inventors
- 👤 Carl W Raetzsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 04:54
CPC Classifications
C; C25; C25B; C25B9/00; C25B9/70; C25B1/00; C25B1/01; C25B1/24; C25B1/26; C25B1/265; C25B9/13
Claims Analysis
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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 |