Patent US3799849A successfully refreshed from Google Patents.
US3799849A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reactivation of cathodes in chlorate cells
Assignee: Hooker Chemical Corp
•
Filing: 1972-06-26
•
Granted: 1974-03-26
•
Expires: 1992-06-26
Abstract
Abstract STEEL CATHODES WHICH HAVE BECOME DEACTIVATED BY EXPOSURE TO AN ELECTROLYTE CONTAINING IN EXCESS OF 300 GRAMS PER LITER ALKALI METAL CHLORATE DURING A SHUTDOWN PERIOD IN CHLORATE CELL OPERATION ARE REACTIVATED BY RESUMING ELECTROLYSIS WITH AN ALKALI METAL CHLORIDE BRINE HAVING A CHLORATE CONCENTRATION BELOW 300 GRAMS PER LITER, CONTINUING ELECTROLYSIS WHILE MAINTAINING THIS LOWER LEVEL OF CHLORATE CONCENTRATION IN THE BRINE UNTIL THE HYDROGEN EFFICIENCY OF THE CELL REACHES AT LEAST 95% AND, THEREAFTER, INCREASING THE CHLORATE CONCENTRATION IN THE ELECTROLYTE TO ABOVE 300 GRAMS PER LITER.
Inventors
- 👤 E Cook
- 👤 D Snyder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:42
CPC Classifications
C; C25; C25B; C25B15/00; C25B1/00; C25B1/01; C25B1/24; C25B1/26; C25B1/265
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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |