US3103474A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrowinning of metals from electrolytes
Assignee: —
•
Filing: —
•
Granted: 1963-09-10
•
Expires: 1980-09-10
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 23:22
CPC Classifications
H; H01; H01M; H01M14/00; C; C23; C23G; C23G1/00; C23G1/36; C25; C25C; C25C7/00; C25F; C25F7/00; C25F7/02; Y; Y10; Y10S; Y10S204/00; Y10S204/03
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
146 words
THE METHOD OF REGENERATING SPENT PICKLE LIQUOR COMPRISING PASSING A SPENT PICKLE LIQUOR COMPRISING A MIXTURE OF SULFURIC ACID AND FERROUS SULFATE INTO THE CATHODE COMPARTMENT OF A TWO-COMPARTMENT CELL DEFINED BY A POROUS DIAPHRAGM, SAID CELL HAVING A SOLID NONPOROUS CATHODE IN ONE COMPARTMENT AND A POROUS CATALYTIC ANODE IN THE OTHER COMPARTMENT, SAID PICKLE LIQUOR BEING UNDER SUFFICIENT PRESSURE TO PASS THROUGH SAID POROUS DIAPHRAGM INTO THE ANODE COMPARTMENT, INTRODUCING A HYDROGEN ION PRODUCING FUEL THROUGH SAID CATALYTIC ANODE, SAID CATALYST OF THE ANODE COMPRISING A MATERIAL CAPABLE OF EFFECTING HYDROGEN ION PRODUCING ELECTROCHEMICAL REACTION AT THE INTERFACE BETWEEN SAID FUEL AND SAID PICKLE LIQUIR TO FORM HYDROGE IONS, PASSING A DIRECT CURRENT FROM THE ANODE TO THE CATHODE OF SAID CELL TO CAUSE THE DEPOSITION OF SAID IRON METAL AT SAID CATHODE, AND REMOVING REGENERATED SULFURIC ACID PICKLE LIQUOR FROM THE ANODE COMPARTMENT.
Claim 2
Independent Claim
146 words
THE METHOD OF REGENERATING SPENT PICKLE LIQUOR COMPRISING PASSING A SPENT PICKLE LIQUOR COMPRISING A MIXTURE OF SULFURIC ACID AND FERROUS SULFATE INTO THE CATHODE COMPARTMENT OF A TWO-COMPARTMENT CELL DEFINED BY A POROUS DIAPHRAGM, SAID CELL HAVING A SOLID NONPOROUS CATHODE IN ONE COMPARTMENT AND A POROUS CATALYTIC ANODE IN THE OTHER COMPARTMENT, SAID PICKLE LIQUOR BEING UNDER SUFFICIENT PRESSURE TO PASS THROUGH SAID POROUS DIAPHRAGM INTO THE ANODE COMPARTMENT, INTRODUCING A HYDROGEN ION PRODUCING FUEL THROUGH SAID CATALYTIC ANODE, SAID CATALYST OF THE ANODE COMPRISING A MATERIAL CAPABLE OF EFFECTING HYDROGEN ION PRODUCING ELECTROCHEMICAL REACTION AT THE INTERFACE BETWEEN SAID FUEL AND SAID PICKLE LIQUIR TO FORM HYDROGE IONS, PASSING A DIRECT CURRENT FROM THE ANODE TO THE CATHODE OF SAID CELL TO CAUSE THE DEPOSITION OF SAID IRON METAL AT SAID CATHODE, AND REMOVING REGENERATED SULFURIC ACID PICKLE LIQUOR FROM THE ANODE COMPARTMENT.
References Cited (Backward Citations)
FR400787A
Cited
GB303027A
Cited
US2273797A
Cited
US2384463A
Cited
US2273798A
Cited
US2389691A
Cited
US2583098A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-09-09 | 1967-03-11 | 1967-09-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-09-09 | 1971-03-11 | 1971-09-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-09-09 | 1975-03-11 | 1975-09-10 | $7700.00 | Window Closed / Lapsed |