Patent US2807536A successfully refreshed from Google Patents.
US2807536A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of reducing highly siliceous crude iron ore
Assignee: Ford Motor Co
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Filing: 1956-09-24
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Granted: 1957-09-24
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Expires: 1976-09-24
Abstract
No abstract record available.
Inventors
- 👤 Charles A O'malley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 20:42
CPC Classifications
C; C21; C21B; C21B13/00; C21B13/006; Y; Y02; Y02P; Y02P10/00; Y02P10/10; Y02P10/134
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
96 words
THE PROCESS OF PRODUCING FURANCE FEED FROM A HIGHLY SILICEOUS CRUDE ORE COMPRISING PULVERIZING THE CRUDE ORE, ELIMINATING A PORTION OF THE SILLICA FROM THE PULVERIZED ORE TO YIELD A CONCENTRATED ORE, MIXING WITH THE CONCENTRATED ORE A SUBSTANTIAL QUANTITY OF SAND, REDUCING AND AGGLOMERATING THE MIXTURE OF SAND AND ORE IN A FLUIDIZED STATE BY MEANS OF A GASEOUS REDUCTANT AT TEMPERATURES BELOW THE FUSION POINT OF THE ORE, THE GANGUE AND IRON, CONCENTRATING THE IRON CONTENT OF REDUCTATE BY DRY SCREENING AND FUSING THE REDUCTATE IN AN ATMOSPHERE WHICH IS NOT OXIDIZING TO IRON.
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) | 1960-09-23 | 1961-03-25 | 1961-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-09-23 | 1965-03-25 | 1965-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-09-23 | 1969-03-25 | 1969-09-24 | $7700.00 | Window Closed / Lapsed |