Patent US2746920A successfully refreshed from Google Patents.
US2746920A
Expired / Lapsed
US
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Waster pickle liquor disposal
Assignee: Individual
•
Filing: 1952-07-07
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Granted: 1956-05-22
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Expires: 1972-07-07
Abstract
No abstract record available.
Inventors
- 👤 John M Wunderley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 15:20
CPC Classifications
C; C02; C02F; C02F9/00; C02F2101/00; C02F2101/10; C02F2101/20; Y; Y10; Y10S; Y10S423/00; Y10S423/01; Y10S423/02
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
82 words
IN THE METHOD OF DISPOSING OF WASTE PICKLE LIQUOR COMPRISING SULPHURIC ACID AND FERROUS SULPHATE IN AQUEOUS SOLUTION, THE STEPS OF MIXING THE LIQUOR WITH A SUFFICIENT QUANTITY OF GRANULATED BASIC FERROUS SLAG TO REACT WITH AND SUBSTANTIALILY NEUTRALIZE THE ACID OF THE SOLUTION, ABSORBING THE SOLUTION INTO THE SLAG DURING SUCH MIXING FOR REACTION THEREWITH AND DEPOSITING OF THE REACTION PRODUCTS THEREON, THEN AIR DRYING THE SLAG TO FIT THE IRON OF THE REACTION PRODUCTS THEREIN AS SUBSTANTIALLY WATER-INSOLUBLE IRON COMPOUNDS.
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) | 1959-05-22 | 1959-11-21 | 1960-05-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-22 | 1963-11-21 | 1964-05-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-22 | 1967-11-21 | 1968-05-22 | $7700.00 | Window Closed / Lapsed |