US3058823A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Treatment of molten ferrous metal
Assignee: BOC Group Ltd
•
Filing: 1960-04-12
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Granted: 1962-10-16
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Expires: 1980-04-12
Abstract
No abstract record available.
Inventors
- 👤 Churcher Thomas Christonher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:30
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/30; C21C5/32; C21C7/00; C21C7/0037
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
IN THE TREATMENT OF MOLTEN FERROUS METAL BY BLOWING WITH A STREAM OF AN OXIDIZING GAS, THE STEP OF ENTRAINING IN SAID STREAM OF OXIDIZING GAS A PART OF THE FUME EVOLVED DURING THE TREAMENT BY INJECTOR ACTION PRODUCED BY THE KINETIC ENERGY OF SAID STREAM OF OXIDIZING GAS AND RETURNING SAID PART OF THE FUME WITH SAID STREAM OF OXIDIZING GAS TO THE MELT.
Claim 2
Dependent Claim
65 words
IN THE TREATMENT OF MOLTEN FERROUS METAL BY BLOWING WITH A STREAM OF AN OXIDIZING GAS, THE STEP OF ENTRAINING IN SAID STREAM OF OXIDIZING GAS A PART OF THE FUME EVOLVED DURING THE TREAMENT BY INJECTOR ACTION PRODUCED BY THE KINETIC ENERGY OF SAID STREAM OF OXIDIZING GAS AND RETURNING SAID PART OF THE FUME WITH SAID STREAM OF OXIDIZING GAS TO THE MELT.
References Cited (Backward Citations)
US2529387A
Cited
US2707677A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1965-10-15 | 1966-04-16 | 1966-10-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-10-15 | 1970-04-16 | 1970-10-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-10-15 | 1974-04-16 | 1974-10-16 | $7700.00 | Window Closed / Lapsed |