US2501138A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Globular inclusion control for steel making
Assignee: W J Holliday & Co Inc
•
Filing: 1948-11-17
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Granted: 1950-03-21
•
Expires: 1968-11-17
Abstract
No abstract record available.
Inventors
- 👤 James T Parker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 18:31
CPC Classifications
C; C21; C21C; C21C7/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
55 words
THE PROCESS OF MAKING SULPHURIZED AND RESULPHURIZED STEELS OF THE CHARACTER DESCRIBED COMPRISING MAKING THE MELT, POURING INTO A LADLE, AND TEEMING, CHARACTERIZED BY THE ADDITION TO THE MELT, PRIOR TO POURING INTO THE LADLE, OF A HIGH TEMPERATURE MANGANESE SULFIDE ALLOY COMPOSITION IN LUMP FORM FOR HIGH TEMPERATURE MANGANESE SULFIDE GLOBULAR INCLUSION SEEDING PURPOSES.
Claim 2
Dependent Claim
55 words
THE PROCESS OF MAKING SULPHURIZED AND RESULPHURIZED STEELS OF THE CHARACTER DESCRIBED COMPRISING MAKING THE MELT, POURING INTO A LADLE, AND TEEMING, CHARACTERIZED BY THE ADDITION TO THE MELT, PRIOR TO POURING INTO THE LADLE, OF A HIGH TEMPERATURE MANGANESE SULFIDE ALLOY COMPOSITION IN LUMP FORM FOR HIGH TEMPERATURE MANGANESE SULFIDE GLOBULAR INCLUSION SEEDING PURPOSES.
References Cited (Backward Citations)
US2120894A
Cited
US2225511A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1953-03-20 | 1953-09-19 | 1954-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-03-20 | 1957-09-19 | 1958-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-03-20 | 1961-09-19 | 1962-03-21 | $7700.00 | Window Closed / Lapsed |