US2737696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of producing sound ingots of fully killed steel in big-end-down molds
Assignee: United States Steel Corp
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Filing: 1954-01-13
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Granted: 1956-03-13
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Expires: 1974-01-13
Abstract
No abstract record available.
Inventors
- 👤 Bruce M Shields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 13:06
CPC Classifications
B; B22; B22D; B22D7/00; B22D7/06; B22D7/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
89 words
IN A METHOD OF PRODUCING INGOTS OF FULLY KILLED STEEL, THE STEPS INCLUDING PROVIDING A BIG-END-DOWN INGOT MOLD, PLACING ON THE MOLD A REFRACTORY COLLAR EXTENDING DOWNWARDLY THEREINTO A DISTANCE SUCH THAT THE RATIO OF THE DISTANCE FROM THE BOTTOM OF THE COLLAR TO THE BOTTOM OF THE MOLD AND THE MINIMUM TRANSVERSE DIMENSION OF THE INGOT IS BETWEEN 2.5 AND 3.4, TEEMING FULLY KILLED STEEL INTO THE MOLD THROUGH THE COLLAR, UNTIL IT RISES IN THE LATTER TO A LEVEL ABOVE THE BOTTOM THEREOF FORMING A SINKHEAD ABOVE
Claim 2
Dependent Claim
89 words
IN A METHOD OF PRODUCING INGOTS OF FULLY KILLED STEEL, THE STEPS INCLUDING PROVIDING A BIG-END-DOWN INGOT MOLD, PLACING ON THE MOLD A REFRACTORY COLLAR EXTENDING DOWNWARDLY THEREINTO A DISTANCE SUCH THAT THE RATIO OF THE DISTANCE FROM THE BOTTOM OF THE COLLAR TO THE BOTTOM OF THE MOLD AND THE MINIMUM TRANSVERSE DIMENSION OF THE INGOT IS BETWEEN 2.5 AND 3.4, TEEMING FULLY KILLED STEEL INTO THE MOLD THROUGH THE COLLAR, UNTIL IT RISES IN THE LATTER TO A LEVEL ABOVE THE BOTTOM THEREOF FORMING A SINKHEAD ABOVE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-03-13 | 1959-09-12 | 1960-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-03-13 | 1963-09-12 | 1964-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-03-13 | 1967-09-12 | 1968-03-13 | $7700.00 | Window Closed / Lapsed |