US2583098A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of waste pickle liquor
Assignee: Union Carbide Corp
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Filing: 1947-03-25
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Granted: 1952-01-22
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Expires: 1967-03-25
Abstract
No abstract record available.
Inventors
- 👤 George W Heise
- 👤 Erwin A Schumacher
- 👤 Howard R Wilson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 03:45
CPC Classifications
C; C25; C25C; C25C1/00; C25C1/06; C01; C01C; C01C1/00; C01C1/24; C01G; C01G49/00; C02; C02F; C02F1/00; C02F1/46; C02F1/461; C02F1/467; C02F1/4676; C02F1/4678; C23; C23G; C23G1/00; C23G1/36; C25B; C25B1/00; C25B1/01; C25B9/00; C25B9/17
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
153 words
METHOD OF TREATING AN ACIDIC IRON PICKLE LIQUOR CONTAINING A PICKLING INHIBITOR WHICH COMPRISES REMOVING THE PICKLING INHIBITOR FROM THE LIQUOR, PASSING THIS LIQUOR INTO AN ELECTROLYTIC CELL HAVING A CATHODE UPON WHICH IRON CAN PLATE AND A POROUS ANODE, AND ELECTROLYZING IN SAID CELL AT A TEMPERATURE UP TO 40* C., SUCH A LIQUOR CONTAINING AT LEAST SUFFICIENT MINERAL ACID TO GIVE A PH CORRESPONDING TO 6 GRAMS OF SULPHURIC ACID PER LITER, PLATING IRON FROM SAID LIQUOR ONTO THE CATHODE, PASSING THE LIQUOR THROUGH THE ANODE, OXIDIZING ONLY A PORTION OF THE FERROUS IRON IN THE LIQUOR AT THE ANODE FROM THE FERROUS TO THE FERRIC STATE, WITHDRAWING FROM THE CELL AN EFFLUENT WHICH IS THE PICKLE LIQUOR AFTER IT HAS PASSED THROUGH THE ANODE AND CONTAINS FERROUS IONS BUT IS ENRICHED IN FERRIC IONS, AND MAINTAINING THE ANODIC CURRENT DENSITY BELOW THAT AT WHICH GAS IS RELEASED AT THE ANODE.
Claim 2
Dependent Claim
153 words
METHOD OF TREATING AN ACIDIC IRON PICKLE LIQUOR CONTAINING A PICKLING INHIBITOR WHICH COMPRISES REMOVING THE PICKLING INHIBITOR FROM THE LIQUOR, PASSING THIS LIQUOR INTO AN ELECTROLYTIC CELL HAVING A CATHODE UPON WHICH IRON CAN PLATE AND A POROUS ANODE, AND ELECTROLYZING IN SAID CELL AT A TEMPERATURE UP TO 40* C., SUCH A LIQUOR CONTAINING AT LEAST SUFFICIENT MINERAL ACID TO GIVE A PH CORRESPONDING TO 6 GRAMS OF SULPHURIC ACID PER LITER, PLATING IRON FROM SAID LIQUOR ONTO THE CATHODE, PASSING THE LIQUOR THROUGH THE ANODE, OXIDIZING ONLY A PORTION OF THE FERROUS IRON IN THE LIQUOR AT THE ANODE FROM THE FERROUS TO THE FERRIC STATE, WITHDRAWING FROM THE CELL AN EFFLUENT WHICH IS THE PICKLE LIQUOR AFTER IT HAS PASSED THROUGH THE ANODE AND CONTAINS FERROUS IONS BUT IS ENRICHED IN FERRIC IONS, AND MAINTAINING THE ANODIC CURRENT DENSITY BELOW THAT AT WHICH GAS IS RELEASED AT THE ANODE.
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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) | 1955-01-21 | 1955-07-23 | 1956-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-01-21 | 1959-07-23 | 1960-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-01-21 | 1963-07-23 | 1964-01-22 | $7700.00 | Window Closed / Lapsed |