Patent US3232746A successfully refreshed from Google Patents.
US3232746A
Expired / Lapsed
US
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Method for reduction of metal oxide
Assignee: Northern Natural Gas Co
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Filing: 1961-10-04
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Granted: 1966-02-01
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Expires: 1981-10-04
Abstract
No abstract record available.
Inventors
- 👤 Karlovitz Bela
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:55
CPC Classifications
C; C22; C22B; C22B21/00; C22B21/02; C01; C01B; C01B33/00; C01B33/02; C01B33/021; C01B33/023; C01B33/025; C21; C21C; C21C5/00; C21C5/28; C21C5/30; C21C5/32; C21C5/42; C21C5/46; C21C5/4606; C22B4/00; C22B5/00; C22B5/02; C22B5/04; C22B5/06; C21C5/56; C21C5/562; C21C5/565; Y; Y02; Y02P; Y02P10/00; Y02P10/20
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
70 words
A METHOD OF REDUCING METAL OXIDES WHICH COMPRISES FORMING A FLAME BY CHEMICAL COMBUSTION, CREATING A SUBSTANTIAL ELECTRICAL DISCHARGE DISTRIBUTED ACROSS THE FLAME, PASSING SUBSTANTIALLY ALL OF THE FLAME THROUGH THE DISCHARGE TO INCREASE THE TEMPERATURE OF THE FLAME, INTRODUCING THE OXIDES INPOWDERED FORM IN THE FLAME, CREATING A REDUCING ATMOSPHERE WITHIN THE FLAME, COLLECTING DROPS OF MOLTEN METAL FROM SAID FLAME, AND WITHDRAWING THE EXHAUST GASES FROM SAID FLAME.
Claim 2
Independent Claim
70 words
A METHOD OF REDUCING METAL OXIDES WHICH COMPRISES FORMING A FLAME BY CHEMICAL COMBUSTION, CREATING A SUBSTANTIAL ELECTRICAL DISCHARGE DISTRIBUTED ACROSS THE FLAME, PASSING SUBSTANTIALLY ALL OF THE FLAME THROUGH THE DISCHARGE TO INCREASE THE TEMPERATURE OF THE FLAME, INTRODUCING THE OXIDES INPOWDERED FORM IN THE FLAME, CREATING A REDUCING ATMOSPHERE WITHIN THE FLAME, COLLECTING DROPS OF MOLTEN METAL FROM SAID FLAME, AND WITHDRAWING THE EXHAUST GASES FROM SAID FLAME.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-01-31 | 1969-08-02 | 1970-02-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-31 | 1973-08-02 | 1974-02-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-31 | 1977-08-02 | 1978-02-01 | $7700.00 | Window Closed / Lapsed |