US3392008A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Production of iron
Assignee: ExxonMobil Technology and Engineering Co
•
Filing: 1965-07-29
•
Granted: 1968-07-09
•
Expires: 1985-07-29
Abstract
No abstract record available.
Inventors
- 👤 Wald Emil Wardlaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 21:08
CPC Classifications
C; C21; C21B; C21B13/00; C21B13/0086; Y; Y02; Y02P; Y02P10/00; Y02P10/10; Y02P10/122; Y02P10/134
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
IN A PROCESS FOR THE PRODUCTION OF METALLIC IRON WHEREIN PARTICULATE IRON ORE SOLIDS ARE FED INTO A ZONE, CONTACTED WITH GAS, REDUCED, PARTICULATE METALLIC IRON WITHDRAWN FROM THE PROCESS AN COMPACTED AT ELEVATED TEMPERTURES INTO A RIGID SHAPE, THE IMPROVEMENT COMPRISING CONTACTING THE RIGID SHAPE OUTSIDE THE ZONE WITH A HYDROCARBON TO PREHEAT, CRACK AND DECOMPOSE THE HYDROCARBON WHILE LAYING DOWN A CARBON COATING ON THE RIGID SHAPE, WITHDRAWN THE GASEOUS PRODUCT OF THE DECOMPOSITION REACTION AND FEEDING SAME INTO THE SAID ZONE.
Claim 2
Dependent Claim
84 words
IN A PROCESS FOR THE PRODUCTION OF METALLIC IRON WHEREIN PARTICULATE IRON ORE SOLIDS ARE FED INTO A ZONE, CONTACTED WITH GAS, REDUCED, PARTICULATE METALLIC IRON WITHDRAWN FROM THE PROCESS AN COMPACTED AT ELEVATED TEMPERTURES INTO A RIGID SHAPE, THE IMPROVEMENT COMPRISING CONTACTING THE RIGID SHAPE OUTSIDE THE ZONE WITH A HYDROCARBON TO PREHEAT, CRACK AND DECOMPOSE THE HYDROCARBON WHILE LAYING DOWN A CARBON COATING ON THE RIGID SHAPE, WITHDRAWN THE GASEOUS PRODUCT OF THE DECOMPOSITION REACTION AND FEEDING SAME INTO THE SAID ZONE.
References Cited (Backward Citations)
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US3231366A
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |