US3587719A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Molten metal supply apparatus for preventing oxide contamination in continuously cast steel products
Assignee: Vodafone GmbH
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Filing: 1969-12-11
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Granted: 1971-06-28
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Expires: 1989-12-11
Abstract
Abstract FOR CONTINUOUS CASTING OF STEEL, THE SETEEL IS POURED IN FREE FALL INTO A CHAMBER HAVING BOTTOM BELOW THE SURFACE LEVEL OF THE LIQUID STEEL IN THE MOLD AND HAVING LATERAL OPENINGS ABOVE THE BOTTOM TO CAUSE THE POURED-IN STEEL TO CHANGE THE DIRECTION OF FLOW AT LEAST TWICE BEFORE BEING INTRODUCED INTO THE MOLD AT A CONSIDERABLY REDUCED SPEED AS COMPARED WITH THE SPEED OF THE POURED, FREE FALLING STREAM.
Inventors
- 👤 Hans Schrewe
- 👤 Helmut Kobusch
- 👤 Wolf-Dietrich Liestmann
- 👤 Wolfhard Carius
- 👤 Hans Vom Ende
- 👤 Klaus Frenken
- 👤 Gerd Vogt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 11:26
CPC Classifications
B; B22; B22D; B22D41/00; B22D41/50
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) | 1974-06-27 | 1974-12-27 | 1975-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-27 | 1978-12-27 | 1979-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-27 | 1982-12-27 | 1983-06-28 | $7700.00 | Window Closed / Lapsed |