US3764497A
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Decreasing cyanide content by an electrochemical technique
Assignee: Hooker Chemical Corp
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Filing: 1971-04-14
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Granted: 1973-10-09
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Expires: 1991-04-14
Abstract
Abstract A METHOD OF DECREASING THE AMOUNT OF THE CYANIDE IONS IN A SOLUTION IS DESCRIBED BY PASSING A CURRENT THROUGH AN ELECTROLYTIC CELL CONTAINING AT LEAST ONE POSITIVE AND ONE NEGATIVE ELECTRODE THEREIN AND HAVING AN ELECTROLYTIC CONTAINING CYANIDE IONS AND A BED OF NON-CONDUCTIVE PARTICLES WHEREIN THE PARTICLES ARE DISTRIBUTED BY THE FLOW OF THE ELECTROLYTE THROUGH THE BED OF PARTICLES.
Inventors
- 👤 M Tarjanyi
- 👤 M Strier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 16:44
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/46; C02F1/461; C02F1/467; C02F1/4672; C02F2101/00; C02F2101/10; C02F2101/16; C02F2101/18
Claims Analysis
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References Cited (Backward Citations)
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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) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |