Patent US3679400A successfully refreshed from Google Patents.
US3679400A
Expired / Lapsed
US
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Hot ductility of steels containing tellurium
Assignee: Lasalle Steel Co
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Filing: 1970-10-19
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Granted: 1972-07-25
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Expires: 1990-10-19
Abstract
Abstract MINIMIZING THE LOSS IN DUCTILITY AT ELEVATED TEMPERATURE RESULTING FROM THE ADDITIONS OF TELLURIUM TO STEELS BY PROVIDING THE STEELS WITH RARE EARTH METALS IN PREDETERMINED AMOUNTS WITH THE TELLURIUM.
Inventors
- 👤 Elliot Simon Nachtman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 15:28
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/60; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/4998; Y10T29/49988
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) | 1975-07-25 | 1976-01-24 | 1976-07-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-25 | 1980-01-24 | 1980-07-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-25 | 1984-01-24 | 1984-07-25 | $7700.00 | Window Closed / Lapsed |