US3756932A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrolytic cyanide destruction
Assignee: Industrial Filter and Pump Manufacturing Co
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Filing: 1971-04-08
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Granted: 1973-09-04
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Expires: 1991-04-08
Abstract
Abstract CYANIDE BEARING WASTE SOLUTIONS ARE PASSED THROUGH AN EVAPORATOR TO INCREASE THE CONCENTRATION OF CYANIDE THEREIN BEFORE SUPPLIED TO AN ELECTROLYTIC DECOMPOSITION TANK FROM WHICH THE SOLUTION IS RECIRCULATED THROUGH THE EVAPORATOR TO MAINTAIN THE CONCENTRATION OF CYNIDE IN THE ELECTROLYTIC DECOMPOSITION TANK AT A LEVEL PERMITTING EFFICIENT OPERATION THEREOF.
Inventors
- 👤 J Zievers
- 👤 C Novotny
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:52
CPC Classifications
C; C02; C02F; C02F1/00; C02F1/66; C02F1/02; C02F1/04; C02F1/048; C02F1/46; C02F1/461; C02F1/467; C02F1/4672; C02F2101/00; C02F2101/10; C02F2101/16; C02F2101/18
Claims Analysis
Total Claims: 0
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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) | 1976-09-03 | 1977-03-05 | 1977-09-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-03 | 1981-03-05 | 1981-09-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-03 | 1985-03-05 | 1985-09-04 | $7700.00 | Window Closed / Lapsed |