US2773025A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Destroying cyanides in aqueous cyanide solutions
Assignee: Westinghouse Electric Corp
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Filing: 1953-09-10
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Granted: 1956-12-04
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Expires: 1973-09-10
Abstract
No abstract record available.
Inventors
- 👤 Herbert E Ricks
- 👤 Warren M Trigg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 10:59
CPC Classifications
C; C25; C25D; C25D21/00; C25D21/16; C25D21/20; C02; C02F; C02F1/00; C02F1/46; C02F1/461; C02F1/467; C02F1/4672; C02F1/46104; C02F1/46109; C02F2101/00; C02F2101/10; C02F2101/16; C02F2101/18
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
135 words
IN THE PROCESS OF RAPIDLY REDUCING TO A LOW CONCENTRATION THE CYANIDE CONTENT OF AN AQUEOUS SOLUTION OF A CYANIDE, THE STEPS COMPRISING DISPOSING IN THE AQUEOUS SOLUTION AN INERT CATHODE AND AN INSOLUBLE ANODE HAVING POROUS WALLS, PASSING THROUGH THE WALLS OF THE POROUS ANODE A GAS CONTAINING FREE OXYGEN, THE GAS FORMING A STREAM OF FINE BUBBLES AT THE SURFACE OF THE ANODE, AND, SIMULTANEOUSLY WITH THE PASSAGE OF THE GAS THROUGH THE WALLS OF THE ANODE, PASSING A DIRECT ELECTRICAL CURRENT AT A DENSITY OF AT LEAST 5 AMPERES PER SQUARE FOOT AT THE ANODE, THE AMOUNT OF THE GAS BEING SUFFICIENT TO PROVIDE OXYGEN IN AN AMOUNT IN SUBSTANTIAL EXCESS OF THAT REQUIRED TO REACT WITH THE CYANIDE TO FORM RELATIVELY NON-TOXIC PRODUCTS COMPRISING ESSENTIALLY CARBON DIOXIDE, CARBON MONOXIDE, AND NITROGEN.
Claim 2
Dependent Claim
135 words
IN THE PROCESS OF RAPIDLY REDUCING TO A LOW CONCENTRATION THE CYANIDE CONTENT OF AN AQUEOUS SOLUTION OF A CYANIDE, THE STEPS COMPRISING DISPOSING IN THE AQUEOUS SOLUTION AN INERT CATHODE AND AN INSOLUBLE ANODE HAVING POROUS WALLS, PASSING THROUGH THE WALLS OF THE POROUS ANODE A GAS CONTAINING FREE OXYGEN, THE GAS FORMING A STREAM OF FINE BUBBLES AT THE SURFACE OF THE ANODE, AND, SIMULTANEOUSLY WITH THE PASSAGE OF THE GAS THROUGH THE WALLS OF THE ANODE, PASSING A DIRECT ELECTRICAL CURRENT AT A DENSITY OF AT LEAST 5 AMPERES PER SQUARE FOOT AT THE ANODE, THE AMOUNT OF THE GAS BEING SUFFICIENT TO PROVIDE OXYGEN IN AN AMOUNT IN SUBSTANTIAL EXCESS OF THAT REQUIRED TO REACT WITH THE CYANIDE TO FORM RELATIVELY NON-TOXIC PRODUCTS COMPRISING ESSENTIALLY CARBON DIOXIDE, CARBON MONOXIDE, AND NITROGEN.
References Cited (Backward Citations)
US2520703A
Cited
US2273036A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-12-04 | 1960-06-04 | 1960-12-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-12-04 | 1964-06-04 | 1964-12-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-12-04 | 1968-06-04 | 1968-12-04 | $7700.00 | Window Closed / Lapsed |