Patent US2865823A successfully refreshed from Google Patents.
US2865823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of reclaiming waste pickle liquor
Assignee: United States Steel Corp
•
Filing: 1957-06-04
•
Granted: 1958-12-23
•
Expires: 1977-06-04
Abstract
No abstract record available.
Inventors
- 👤 Arch W Harris
- 👤 Charles D Stricker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:55
CPC Classifications
B; B01; B01J; B01J47/00; B01J47/12
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
98 words
A METHOD OF RECLAIMING WASTE HYDROCHLORIC-ACID PICKEL LIQUOR WHICH CONSISTS IN DISSOLVINH FROM 10 TO 20% OF HYDROGEN-CHLORIDE GAS IN THE LIQUOR UNTIL THE HYDROCHLORIC ACID CONCENTRATION IS FROM 20 TO 25%, COOLING THE LIQUOR TO CRYSTALLIZE FERROUS CHLORIDE, SEPARATING THE CRYSTALS FROM THE LIQUOR, ELECTROLYZING A WATER SOLUTION OF THE CRYSTALS IN A CELL WHEREIN AN ANIONIC MEMBRANE SEPARATES THE ANODE AND CATHODE THEREBY DEPOSITING IRON AT THE CATHODE AND RELEASING CHLORINE AT THE ANODE, BURNING THE CHLORINE IN A HYDROGEN ATMOSPHERE TO FORM FRESH HYDROGEN CHLORIDE AND CONTACTING THE HYDROGEN CHLORIDE SO FORMED WITH ADDITIONAL LIQUOR.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-12-22 | 1962-06-23 | 1962-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-22 | 1966-06-23 | 1966-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-22 | 1970-06-23 | 1970-12-23 | $7700.00 | Window Closed / Lapsed |