Patent US3761243A successfully refreshed from Google Patents.
US3761243A
Expired / Lapsed
US
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Method of quenching slag
Assignee: United States Steel Corp
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Filing: 1971-05-21
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Granted: 1973-09-25
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Expires: 1991-05-21
Abstract
Abstract A METHOD OF REDUCING HYROGEN SULFIDE EMISSION DURING THE QUENCHING OF HOT BLAST FURNACE SLAG. MORE PARTICULARLY, THE ADDITION OF A METAL SALT TO THE WATER USED TO QUENCH MOLTEN BLAST FURNANCE SLAG TO PREVENT THE EMISSION OF HYDROGEN SULFIDE.
Inventors
- 👤 J Kuntz
- 👤 A Spinola
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:56
CPC Classifications
C; C21; C21B; C21B3/00; C21B3/04; C21B3/06; C21B2100/00; C21B2100/40; C21B2100/42; C21B2400/00; C21B2400/02; C21B2400/022; C21B2400/024; Y; Y02; Y02W; Y02W30/00; Y02W30/50
Claims Analysis
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-24 | 1977-03-26 | 1977-09-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-24 | 1981-03-26 | 1981-09-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-24 | 1985-03-26 | 1985-09-25 | $7700.00 | Window Closed / Lapsed |