US2855291A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Slag conditioning agent
Assignee: Foote Mineral Co
•
Filing: 1956-08-28
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Granted: 1958-10-07
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Expires: 1976-08-28
Abstract
No abstract record available.
Inventors
- 👤 Felix B Litton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:47
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/36; C21C5/04; C21C5/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
76 words
A BASIC FURNACE SLAG CONDITIONING AGENT PROVIDING ON BEING HEATED TO AN ELEVATED TEMPERATURE A COMPOSITION CONSISTING ESSENTIALLY OF FROM ABOUT 2% TO ABOUT 5%, BY WEIGHT, OF AN ALKALI METAL OXIDE, FROM ABOUT 20% TO ABOUT 50% OF AN ALKALINE EARTH METAL OXIDE, FROM ABOUT 30% TO ABOUT 70% OF AN IRON OXIDE EXPRESSED AS FE2O3, AND FROM ABOUT 4% TO ABOUT 13% OF A HALOGEN SELECTED FROM THE GROUP CONSISTING OF FLUORINE AND CHLORINE.
Claim 2
Dependent Claim
76 words
A BASIC FURNACE SLAG CONDITIONING AGENT PROVIDING ON BEING HEATED TO AN ELEVATED TEMPERATURE A COMPOSITION CONSISTING ESSENTIALLY OF FROM ABOUT 2% TO ABOUT 5%, BY WEIGHT, OF AN ALKALI METAL OXIDE, FROM ABOUT 20% TO ABOUT 50% OF AN ALKALINE EARTH METAL OXIDE, FROM ABOUT 30% TO ABOUT 70% OF AN IRON OXIDE EXPRESSED AS FE2O3, AND FROM ABOUT 4% TO ABOUT 13% OF A HALOGEN SELECTED FROM THE GROUP CONSISTING OF FLUORINE AND CHLORINE.
References Cited (Backward Citations)
US170420A
Cited
US1597000A
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US1826882A
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US2146926A
Cited
US2220385A
Cited
US2597851A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-06 | 1962-04-07 | 1962-10-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-06 | 1966-04-07 | 1966-10-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-06 | 1970-04-07 | 1970-10-07 | $7700.00 | Window Closed / Lapsed |