Patent US3193378A successfully refreshed from Google Patents.
US3193378A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for reduction of iron ore
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1964-03-16
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Granted: 1965-07-06
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Expires: 1984-03-16
Abstract
No abstract record available.
Inventors
- 👤 Nick P Peet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 01:33
CPC Classifications
C; C21; C21B; C21B13/00; C21B13/0073; Y; Y02; Y02P; Y02P10/00; Y02P10/10; Y02P10/134
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
145 words
IN THE ENDOTHERMIC REDUCTION OF IRON ORE IN A REDUCTION ZONE AT A TEMPERATURE FROM 900*F. TO 2500*F., WHEREIN IS UTILIZED A REDUCING GAS COMPRISING HYDROGEN AND CARBON MONOXIDE, AND WHEREIN IS PRODUCED A COMBUSTIBLE EFFLUENT GASEOUS STREAM, WHICH HAS CONTACTED ALL OF THE IORN ORE IN SAID REDUCIG ZONE, THE IMPROVEMENT WHICH COMPRISES PASSING A FIRST PORTION OF SAID EFFLUENT GASEOUS STREAM IN CONTACT WITH EXTERNALLY SUPPLIED STEAM AND A HYDROCARBON IN A REFORMING ZONE WHEREBY SAID REDUCING GAS IS PRODUCED SUBSTANTIALLY FREE OF UNREACTED HYDROCARBON, REMOVING FROM SAID REDUCING GAS AN AMOUNT OF WATER EUQIVALENT TO SAID EXTERNALLY SUPPLIED STEAM, AND PASSING THE DEWATERED REDUCING GAS THRUGH SAID REDUCING ZONE IN CONTACT WITH SAID IRON ORE, WHEREBY REDUCED IRON AND SAID EFFLUENT GASEOUS STREAM ARE PRODUCED, AND WHEREBY THE ONLY NET REACTANTS IN SAID REDUCING SYSTEM ARE SAID HYDROCARBON AND SAID IRON ORE.
Claim 2
Dependent Claim
145 words
IN THE ENDOTHERMIC REDUCTION OF IRON ORE IN A REDUCTION ZONE AT A TEMPERATURE FROM 900*F. TO 2500*F., WHEREIN IS UTILIZED A REDUCING GAS COMPRISING HYDROGEN AND CARBON MONOXIDE, AND WHEREIN IS PRODUCED A COMBUSTIBLE EFFLUENT GASEOUS STREAM, WHICH HAS CONTACTED ALL OF THE IORN ORE IN SAID REDUCIG ZONE, THE IMPROVEMENT WHICH COMPRISES PASSING A FIRST PORTION OF SAID EFFLUENT GASEOUS STREAM IN CONTACT WITH EXTERNALLY SUPPLIED STEAM AND A HYDROCARBON IN A REFORMING ZONE WHEREBY SAID REDUCING GAS IS PRODUCED SUBSTANTIALLY FREE OF UNREACTED HYDROCARBON, REMOVING FROM SAID REDUCING GAS AN AMOUNT OF WATER EUQIVALENT TO SAID EXTERNALLY SUPPLIED STEAM, AND PASSING THE DEWATERED REDUCING GAS THRUGH SAID REDUCING ZONE IN CONTACT WITH SAID IRON ORE, WHEREBY REDUCED IRON AND SAID EFFLUENT GASEOUS STREAM ARE PRODUCED, AND WHEREBY THE ONLY NET REACTANTS IN SAID REDUCING SYSTEM ARE SAID HYDROCARBON AND SAID IRON ORE.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-07-05 | 1969-01-04 | 1969-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-05 | 1973-01-04 | 1973-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-05 | 1977-01-04 | 1977-07-06 | $7700.00 | Window Closed / Lapsed |