US2877108A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for reducing metal ores
Assignee: RN Corp
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Filing: 1956-07-30
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Granted: 1959-03-10
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Expires: 1976-07-30
Abstract
No abstract record available.
Inventors
- 👤 Rollin P Smith
- 👤 Donald E Babcock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 13:18
CPC Classifications
C; C21; C21B; C21B13/00; C21B13/0066; C21B13/0086
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
115 words
A PROCESS FOR REDUCING IRON ORE WHICH COMPRISES REDUCING IRON ORE IN THE PRESENCE OF SOLID CARBONACEOUS MATERIAL AT ELEVATED TEMPERATURE TO PRODUCE A REDUCTION PRODUCT COMPRISING REDUCED IRON VALUES, GAMGUE. AND CARBONACEOUS MATERIAL AND CONTAINING APPRECIABLE SENSIBLE HEAT, JUXTAPOSING SAID REDUCTION PRODUCT IN HEAT-TRANS FER RELATIONSHIP WITH A CARBONACEOUS RAW MATERIAL CONTAINING APPRECIABLE QUANTITIES OF VOLATILES TO CHAR SAID CARBONACEOUS MATERIAL WHEREBY A RESIDUE O SOLID CHAR AND A COMBUSTIBLE VOLATILE FRACTION ARE PRODUCED COLLECTING SAID VOLATILE FRACTION AND UTILIZING IT AS FUEL TO MAINTAIN AN ELEVATE TEMPERATURE FOR THE REDUCTION OF ADDITIONAL QUANTITIES OF IRON ORE, COLLECTING SAID SOLID CHAR RESIDUE AND USING SAME FOR THE REDUCTION OF ADDITIONAL QUANTITIES OF IRON ORE.
References Cited (Backward Citations)
US1937822A
Cited
US1941983A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1962-03-09 | 1962-09-08 | 1963-03-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-09 | 1966-09-08 | 1967-03-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-09 | 1970-09-08 | 1971-03-10 | $7700.00 | Window Closed / Lapsed |