US2847296A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exothermic manganese addition agents
Assignee: Union Carbide Corp
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Filing: 1954-05-12
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Granted: 1958-08-12
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Expires: 1974-05-12
Abstract
No abstract record available.
Inventors
- 👤 Donald C Hilty
- 👤 Philip H Crayton
- 👤 John J Darby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:40
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/04; C21C7/06
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
115 words
IN AN EXOTHERMIC REACTION MIXTURE INCLUDING AN ALLOY ADDITION FOR A FERROUS MELT CAP ABLE UPON IGNITION IN THE MELT OF GENERATING SUFFICIENT HEAT TO PERMIT THE ADDITION OF SAID ALLOY WITHOUT CAUSING AN OBJECTIONABLE TEMPERATURE DROP, SAID MIXTURE CONSISTING OF AT LEAST ONE OXIDIZING AGENT FROM THE GROUP CONSISTING OF MANGANESE ORE AND IRON ORE AND AT LEAST ONE REDUCING AGENT FROM THE GROUP CONSISTING OF SILICON, CALCIUM, ALUMINUM AND ALLOYS THEREOF, THE IMPROVEMENT COMPRISES THE USE OF AT LEAST ONE ACCELERATOR FROM THE GROUP CONSISTING OF ALKALI METAL HALIDES, ALKALI METAL CARBONATES, ALKALINE EARTH METAL HALIDES AND ALKALINE EARTH METAL CORBONATES FOR THE IMPROVED RECOVERY OF MANGANESE, SAID ALLOY BEING PRESENT AS FERROMANGANESE.
References Cited (Backward Citations)
US906009A
Cited
US1609969A
Cited
US1593660A
Cited
US2221784A
Cited
US2290273A
Cited
US2462871A
Cited
US2481599A
Cited
US2705196A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-08-11 | 1962-02-10 | 1962-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-08-11 | 1966-02-10 | 1966-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-08-11 | 1970-02-10 | 1970-08-12 | $7700.00 | Window Closed / Lapsed |