US2923615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for obtaining metals from their ores
Assignee: Pan American Petroleum Corp
•
Filing: 1957-03-28
•
Granted: 1960-02-02
•
Expires: 1977-03-28
Abstract
No abstract record available.
Inventors
- 👤 Frank G Pearce
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:47
CPC Classifications
C; C21; C21B; C21B13/00; C21B13/0006; C21B2100/00; C21B2100/20; C21B2100/28; C21B2100/282; C21B2100/40; C21B2100/42; C21B2100/60; C21B2100/66; Y; Y02; Y02P; Y02P10/00; Y02P10/10; Y02P10/122; Y02P10/134; Y02P10/25
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
133 words
IN A CONTINUOUS PROCESS FOR RECOVERING IRON FROM AN OXIDIC IRON ORE CONTAINING AN OBJECTIONABLE CONCENTRATION OF IMPURITIES, THE IMPROVEMENT WHICH COMPRISES EFFECTING PARTIAL COMBUSTION OF A HYDROCARBONACEOUS FUEL WITH OXYGEN IN A KNOWN MANNER TO PRODUCE A MIXTURE CONSISTING ESSENTIALLY OF CARBON MONOXIDE AND HYDROGEN, CONTINUOUSLY FORCING SAID MIXTURE OF CARBON MONOXIDE AND HYDROGEN THROUGH A MOLTEN MASS COMPRISING ESSENTIALLY SAID ORE, SLAG AND FREE IRON TO MAINTAIN SAID MASS AT THE PROPER TEMPERATURE OF REDUCTION OF SAID ORE THEREIN TO THE FREE METAL, WITHDRAWING HOT EFFLUCENT GASES FROM SAID MASS AND HEAT EXHANGING SAID HOT EFFLUENT GASES WITH FRESH ORE, THEREAFTER COOLING SAID GASES TO REMOVE WATER THEREFROM, COMPRESSING SAID GASES AND REMOVING ACID COMPONENTS THEREFROM, NEXT HEATING SAID GASES AND EMPLOYING THE LATTER AS A CARRIER FOR FLUXING MATERIAL, CON-
Claim 2
Dependent Claim
133 words
IN A CONTINUOUS PROCESS FOR RECOVERING IRON FROM AN OXIDIC IRON ORE CONTAINING AN OBJECTIONABLE CONCENTRATION OF IMPURITIES, THE IMPROVEMENT WHICH COMPRISES EFFECTING PARTIAL COMBUSTION OF A HYDROCARBONACEOUS FUEL WITH OXYGEN IN A KNOWN MANNER TO PRODUCE A MIXTURE CONSISTING ESSENTIALLY OF CARBON MONOXIDE AND HYDROGEN, CONTINUOUSLY FORCING SAID MIXTURE OF CARBON MONOXIDE AND HYDROGEN THROUGH A MOLTEN MASS COMPRISING ESSENTIALLY SAID ORE, SLAG AND FREE IRON TO MAINTAIN SAID MASS AT THE PROPER TEMPERATURE OF REDUCTION OF SAID ORE THEREIN TO THE FREE METAL, WITHDRAWING HOT EFFLUCENT GASES FROM SAID MASS AND HEAT EXHANGING SAID HOT EFFLUENT GASES WITH FRESH ORE, THEREAFTER COOLING SAID GASES TO REMOVE WATER THEREFROM, COMPRESSING SAID GASES AND REMOVING ACID COMPONENTS THEREFROM, NEXT HEATING SAID GASES AND EMPLOYING THE LATTER AS A CARRIER FOR FLUXING MATERIAL, CON-
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-02-01 | 1963-08-03 | 1964-02-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-01 | 1967-08-03 | 1968-02-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-01 | 1971-08-03 | 1972-02-02 | $7700.00 | Window Closed / Lapsed |