US3082078A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two-stage ore reduction
Assignee: Texaco Development Corp
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Filing: 1959-10-09
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Granted: 1963-03-19
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Expires: 1979-10-09
Abstract
No abstract record available.
Inventors
- 👤 Peter L Paull
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 12:15
CPC Classifications
C; C21; C21B; C21B13/00; C21B13/14; C21B13/146; C21B13/0073; Y; Y02; Y02P; Y02P10/00; Y02P10/10; Y02P10/134
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
130 words
A PROCESS FOR THE REDUCTION OF IRON ORE WHICH COMPRISES CONTACTING A MOVING BED OF SAID ORE HAVING A MESH SIZE OF FROM ABOUT 4 TO 60 WITH HYDROGEN HEATED TO A TEMPERATURE OF ABOUT 1450* F. IN A FIRST REDUCTION ZONE, THEREBY EFFECTING PARTIAL REDUCTION OF SAID IRON ORE; PASSING SAID PARTIALLY REDUCED IRON ORE INTO A SEPARATE SECOND REDUCTION ZONE; PASSING CARBON MONOXIDE HEATED TO A TEMPERATURE OF ABOUT 1500* F. IN CONTACT THEREWITH IN SAID SECOND ZONE IN THE ABSENCE OF ANY SUBSTANTIAL AMOUNT OF WATER VAPOR, THEREBY FURTHER REDUCING THE RESIDUAL ORE CONTENTS THEREOF; SAID REDUCING GASES IN BOYH OF SAID REDUCTION ZONES MOVING COUNTER-CURRENTLY WITH RESPECT TO SAID MOVING BED OF IRON ORE; AND RECOVERING THE RESULTING REDUCED IRON AS PRODUCT FROM THE SECOND ZONE.
Claim 2
Dependent Claim
130 words
A PROCESS FOR THE REDUCTION OF IRON ORE WHICH COMPRISES CONTACTING A MOVING BED OF SAID ORE HAVING A MESH SIZE OF FROM ABOUT 4 TO 60 WITH HYDROGEN HEATED TO A TEMPERATURE OF ABOUT 1450* F. IN A FIRST REDUCTION ZONE, THEREBY EFFECTING PARTIAL REDUCTION OF SAID IRON ORE; PASSING SAID PARTIALLY REDUCED IRON ORE INTO A SEPARATE SECOND REDUCTION ZONE; PASSING CARBON MONOXIDE HEATED TO A TEMPERATURE OF ABOUT 1500* F. IN CONTACT THEREWITH IN SAID SECOND ZONE IN THE ABSENCE OF ANY SUBSTANTIAL AMOUNT OF WATER VAPOR, THEREBY FURTHER REDUCING THE RESIDUAL ORE CONTENTS THEREOF; SAID REDUCING GASES IN BOYH OF SAID REDUCTION ZONES MOVING COUNTER-CURRENTLY WITH RESPECT TO SAID MOVING BED OF IRON ORE; AND RECOVERING THE RESULTING REDUCED IRON AS PRODUCT FROM THE SECOND ZONE.
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) | 1966-03-18 | 1966-09-17 | 1967-03-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-18 | 1970-09-17 | 1971-03-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-18 | 1974-09-17 | 1975-03-19 | $7700.00 | Window Closed / Lapsed |