US3572124A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for simultaneous determination of carbon-temperature in liquid steel during blowing
Assignee: JFE Engineering Corp
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Filing: 1969-04-14
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Granted: 1971-03-23
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Expires: 1989-04-14
Abstract
Abstract IN A SAMPLING VESSEL FOR RECEIVING LIQUID STEEL DURING BLOWING, INDEPENDENT THERMOCOUPLES ARE MOUNTED ON THE INSIDE OF THE BOTTOM OF SAID VESSEL AND PURGING AIR IS EJECTED THROUGH THE SIDE APERTURE OF SAID VESSEL THROUGH AN AUXILIARY LANCE SUPPORTING SAID VESSLE. A PERMEABLE STOPPER IS PROVIDED AT THE TOP OF THE VESSEL WHICH PERMITS FREE FLOW OF SAID PURGIN AIR BUT PREVENTS COUNTER FLOW OF LIQUID STEEL IN SAID VESSEL.
Inventors
- 👤 Noriyoshi Nagaoka
- 👤 Genichi Usui
- 👤 Akichika Ozeki
- 👤 Moriyuki Ishiguro
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:43
CPC Classifications
C; C21; C21C; C21C5/00; C21C5/28; C21C5/30; Y; Y10; Y10S; Y10S73/00; Y10S73/09
Claims Analysis
Total Claims: 0
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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) | 1974-03-22 | 1974-09-21 | 1975-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-22 | 1978-09-21 | 1979-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-22 | 1982-09-21 | 1983-03-23 | $7700.00 | Window Closed / Lapsed |