US2969282A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of ferrous metal
Assignee: BOC Group Ltd
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Filing: 1960-04-26
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Granted: 1961-01-24
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Expires: 1980-04-26
Abstract
No abstract record available.
Inventors
- 👤 Churcher Thomas Christopher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 14:35
CPC Classifications
C; C21; C21C; C21C1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
IN A PROCESS FOR THE TREATMENT OF MOLTEN FERROUS METAL BY ALLOWING THE MOLTEN METAL IN SUBDIVIDED FORM TO FALL FREELY THROUGH A REACTION SPACE IN CONTACT WITH A STREAM OF AN OXIDISING GAS FED TO SAID REACTION SPACE, THE STEP OF REDUCING THE ESCAPE OF FUME FROM SAID REACTION SPACE BY UTILISING THE INJECTOR ACTON OF THE OXIDISING GAS FED TO SAID REACTION SPACE TO WITHDRAW AT LEAST A PART OF THE FUME FROM SAID REACTION SPACE AT A POINT REMOTE FROM THAT AT WHICH SAID OXIDING GAS IS FED TO SAID REACTION SPACE AND TO RETURN THE WITHDRAWN FUME TO SAID REACTION SPACE ENTRAINED IN THE OXIDISING GAS.
Claim 2
Dependent Claim
110 words
IN A PROCESS FOR THE TREATMENT OF MOLTEN FERROUS METAL BY ALLOWING THE MOLTEN METAL IN SUBDIVIDED FORM TO FALL FREELY THROUGH A REACTION SPACE IN CONTACT WITH A STREAM OF AN OXIDISING GAS FED TO SAID REACTION SPACE, THE STEP OF REDUCING THE ESCAPE OF FUME FROM SAID REACTION SPACE BY UTILISING THE INJECTOR ACTON OF THE OXIDISING GAS FED TO SAID REACTION SPACE TO WITHDRAW AT LEAST A PART OF THE FUME FROM SAID REACTION SPACE AT A POINT REMOTE FROM THAT AT WHICH SAID OXIDING GAS IS FED TO SAID REACTION SPACE AND TO RETURN THE WITHDRAWN FUME TO SAID REACTION SPACE ENTRAINED IN THE OXIDISING GAS.
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) | 1964-01-24 | 1964-07-25 | 1965-01-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-01-24 | 1968-07-25 | 1969-01-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-01-24 | 1972-07-25 | 1973-01-24 | $7700.00 | Window Closed / Lapsed |