US3205065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for reducing iron oxides
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1963-02-20
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Granted: 1965-09-07
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Expires: 1983-02-20
Abstract
No abstract record available.
Inventors
- 👤 Mayer Francis Xavier
- 👤 Mayer Ivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 15:17
CPC Classifications
C; C21; C21B; C21B13/00; C21B13/0033; C22; C22B; C22B1/00; C22B1/02; C22B1/10; Y; Y02; Y02P; Y02P10/00; Y02P10/10; Y02P10/122; Y02P10/134; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A PROCESS OF DIRECTLY REDUCING IRON OXIDES TO METALLIC IRON SOLID PARTICLES BY INJECTING HYDROCARBON FUEL DIRECTLY INTO THE REDUCING ZONE AND INTO CONTACT WITH SAID OXIDES TO CRACK SAME AND TO PRODUCE REDUCING GASES WHICH REDUCE THE IRON OXIDES TO METALLIC IRON, WHEREIN THE REDUCING REACTION IS ENDOTHERMIC REQUIRING ADDED HEAT, WHICH COMPRISES REMOVING FROM THE REDUCING ZONE A PORTION OF THE REDUCED IRON SOLID PARTICLES, CIRCULATING THE PARTICLES TO AN EXTERNAL HEATING ZONE, HEATING THE REDUCED IRON PARRTICLES TO A MORE ELEVATED TEMPERATURE, AND RECYCLING THE HEATED SOLID IRON PARTICLES TO THE REDUCING ZONE,
Claim 2
Dependent Claim
96 words
A PROCESS OF DIRECTLY REDUCING IRON OXIDES TO METALLIC IRON SOLID PARTICLES BY INJECTING HYDROCARBON FUEL DIRECTLY INTO THE REDUCING ZONE AND INTO CONTACT WITH SAID OXIDES TO CRACK SAME AND TO PRODUCE REDUCING GASES WHICH REDUCE THE IRON OXIDES TO METALLIC IRON, WHEREIN THE REDUCING REACTION IS ENDOTHERMIC REQUIRING ADDED HEAT, WHICH COMPRISES REMOVING FROM THE REDUCING ZONE A PORTION OF THE REDUCED IRON SOLID PARTICLES, CIRCULATING THE PARTICLES TO AN EXTERNAL HEATING ZONE, HEATING THE REDUCED IRON PARRTICLES TO A MORE ELEVATED TEMPERATURE, AND RECYCLING THE HEATED SOLID IRON PARTICLES TO THE REDUCING ZONE,
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) | 1968-09-06 | 1969-03-08 | 1969-09-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-06 | 1973-03-08 | 1973-09-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-06 | 1977-03-08 | 1977-09-07 | $7700.00 | Window Closed / Lapsed |