US3574606A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for adding tellurium dioxide to molten steel
Assignee: Inland Steel Co
•
Filing: 1968-07-03
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Granted: 1971-04-13
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Expires: 1988-07-03
Abstract
Abstract ADDING TELLLURIUM TO MOLTEN STEEL USING BRIQUET CONTAINING COMPACTED TELLURIUM DIOXIDE POWDER AND STEEL MACHINE SHOP TURNINGS.
Inventors
- 👤 William Edgar
- 👤 Ralph E Pray
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:18
CPC Classifications
C; C21; C21C; C21C7/00; C21C7/0006; C22; C22C; C22C38/00; C22C38/60
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) | 1974-04-12 | 1974-10-12 | 1975-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-12 | 1978-10-12 | 1979-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-12 | 1982-10-12 | 1983-04-13 | $7700.00 | Window Closed / Lapsed |