US2510155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for treatment of molten stainless steel
Assignee: Armco Inc
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Filing: 1945-07-11
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Granted: 1950-06-06
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Expires: 1965-07-11
Abstract
No abstract record available.
Inventors
- 👤 Tanczyn Harry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:33
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/04; C21C7/068; C21C7/0685
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
69 words
IN THE PRODUCTION IN A MOLD OF CAST STAINLESS STEEL PRODUCTS SUBSTANTIALLY DEVOID OF SCABS, COLD SHUTS, WRINKLES, ROLLS AND SPLASH MARKS, THE ART WHICH INCLUDES CONTACTING MOLTEN STEEL DURING THE TEEMING THEREOF, AND THE SCUM FORMED BY CONTACT OF THE MOLTEN STEEL WITH THE ATMOSPHERE, WITH A TEAMING SCUM FLUX ESSENTIALLY CONSISTING OF AT LEAST TWO OF THE GROUP CONSISTING OF LITHIUM FLUORIDE, SODIUM FLUORIDE AND POTASSIUM, FLUORIDE.
Claim 2
Dependent Claim
69 words
IN THE PRODUCTION IN A MOLD OF CAST STAINLESS STEEL PRODUCTS SUBSTANTIALLY DEVOID OF SCABS, COLD SHUTS, WRINKLES, ROLLS AND SPLASH MARKS, THE ART WHICH INCLUDES CONTACTING MOLTEN STEEL DURING THE TEEMING THEREOF, AND THE SCUM FORMED BY CONTACT OF THE MOLTEN STEEL WITH THE ATMOSPHERE, WITH A TEAMING SCUM FLUX ESSENTIALLY CONSISTING OF AT LEAST TWO OF THE GROUP CONSISTING OF LITHIUM FLUORIDE, SODIUM FLUORIDE AND POTASSIUM, FLUORIDE.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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Cited
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Cited
US2265985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-06-05 | 1953-12-05 | 1954-06-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-06-05 | 1957-12-05 | 1958-06-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-06-05 | 1961-12-05 | 1962-06-06 | $7700.00 | Window Closed / Lapsed |