Patent US2997383A successfully refreshed from Google Patents.
US2997383A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ore reduction
Assignee: Texaco Development Corp
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Filing: 1960-05-24
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Granted: 1961-08-22
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Expires: 1980-05-24
Abstract
No abstract record available.
Inventors
- 👤 Thomas H Whaley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:50
CPC Classifications
C; C21; C21B; C21B13/00; C21B13/0073; C21B13/14; C21B13/146; Y; Y02; Y02P; Y02P10/00; Y02P10/10; Y02P10/134
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A PROCESS FOR REDUCING A REDUCIBLE METAL OXIDE TO METAL WHICH COMPRISES PASSING A HOT GASEOUS REDUCING MIXTURE OF HYDROGEN AND CARBON MONOXIDE IN CONTACT WITH A MASS OF SAID METAL OXIDE EFFECTING A MAJOR PART OF THE REDUCTION OF SAID OXIDE, PASSING STEAM IN CONTACT WITH AT LEAST PART OF THE PARTIALLY REDUCED MASS TO REACT WITH AND PARTIALLY REOXIDIZE SAID PARTIALLY REDUCED MASS AND CONCURRENTLY GENERATE HYDROGEN, AND PASSING SAID STEAM-GENERATED HYDROGEN IN CONTACT WITH PARTIALLY REDUCED OXIDE RESULTING FROM PARTIAL REDUCTION WITH SAID HYDROGEN AND CARBON MONOXIDE EFFECTING FURTHER REDUCTION THEREOF AND FORMING METAL PRODUCT, AND AGAIN REDUCING SAID STEAMTREATED METAL OXIDE BY PASSING A HOT GASEOUS MIXTURE OF CARBON MONOXIDE AND HYDROGEN IN CONTACT THEREWITH.
Claim 2
Dependent Claim
119 words
A PROCESS FOR REDUCING A REDUCIBLE METAL OXIDE TO METAL WHICH COMPRISES PASSING A HOT GASEOUS REDUCING MIXTURE OF HYDROGEN AND CARBON MONOXIDE IN CONTACT WITH A MASS OF SAID METAL OXIDE EFFECTING A MAJOR PART OF THE REDUCTION OF SAID OXIDE, PASSING STEAM IN CONTACT WITH AT LEAST PART OF THE PARTIALLY REDUCED MASS TO REACT WITH AND PARTIALLY REOXIDIZE SAID PARTIALLY REDUCED MASS AND CONCURRENTLY GENERATE HYDROGEN, AND PASSING SAID STEAM-GENERATED HYDROGEN IN CONTACT WITH PARTIALLY REDUCED OXIDE RESULTING FROM PARTIAL REDUCTION WITH SAID HYDROGEN AND CARBON MONOXIDE EFFECTING FURTHER REDUCTION THEREOF AND FORMING METAL PRODUCT, AND AGAIN REDUCING SAID STEAMTREATED METAL OXIDE BY PASSING A HOT GASEOUS MIXTURE OF CARBON MONOXIDE AND HYDROGEN IN CONTACT THEREWITH.
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) | 1964-08-21 | 1965-02-20 | 1965-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-08-21 | 1969-02-20 | 1969-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-08-21 | 1973-02-20 | 1973-08-22 | $7700.00 | Window Closed / Lapsed |