US3212880A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of carrying out metallurgical processes
Assignee: Bot Brassert Oxygen Techik A G
•
Filing: 1960-12-21
•
Granted: 1965-10-19
•
Expires: 1980-12-21
Abstract
No abstract record available.
Inventors
- 👤 Rinesch Rudolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 13:00
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/30; C21C5/32; C21C5/04; C21C5/42; C21C5/46; C21C5/4606; C21C5/462; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/87917
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
98 words
A METHOD OF CARRYING OUT METALLURIGCAL PROCESSES COMPRISING BLOWING AN OXYGEN-CONTAINING GAS AGAINST THE SURFACE OF A CHARGE COMPRISING MOLTEN CRUDE IRON IN A VESSEL HAVING A REFRACTORY LINING, SAID GAS BEING BLOWN THROUGH AN ANNULAR ORIFICE TO FORM AN ANNULAR JET IMPINGING ON SAID SURFACE IN AN ANNULAR ZONE, SAID JET BOUNDING AND DEFINING A PASSAGE WITHIN SAID JET, AND DISCHARGING SOLID PARTICLES BY GRAVITY THROUGH SAID PASSAGE AGAINST THE SURFACE OF SAID CHARGE INWARDLY OF SAID ANNULAR ZONE DURING AT LEAST PART OF THE TIME SAID GAS IS BEING BLOWN AGAINST SAID SURFACE OF SAID CHARGE.
Claim 2
Independent Claim
98 words
A METHOD OF CARRYING OUT METALLURIGCAL PROCESSES COMPRISING BLOWING AN OXYGEN-CONTAINING GAS AGAINST THE SURFACE OF A CHARGE COMPRISING MOLTEN CRUDE IRON IN A VESSEL HAVING A REFRACTORY LINING, SAID GAS BEING BLOWN THROUGH AN ANNULAR ORIFICE TO FORM AN ANNULAR JET IMPINGING ON SAID SURFACE IN AN ANNULAR ZONE, SAID JET BOUNDING AND DEFINING A PASSAGE WITHIN SAID JET, AND DISCHARGING SOLID PARTICLES BY GRAVITY THROUGH SAID PASSAGE AGAINST THE SURFACE OF SAID CHARGE INWARDLY OF SAID ANNULAR ZONE DURING AT LEAST PART OF THE TIME SAID GAS IS BEING BLOWN AGAINST SAID SURFACE OF SAID CHARGE.
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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) | 1968-10-18 | 1969-04-19 | 1969-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-10-18 | 1973-04-19 | 1973-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-10-18 | 1977-04-19 | 1977-10-19 | $7700.00 | Window Closed / Lapsed |