US3010822A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Columbium containing steels, process for their manufacture and articles prepared therefrom
Assignee: National Steel Corp
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Filing: 1961-01-23
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Granted: 1961-11-28
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Expires: 1981-01-23
Abstract
No abstract record available.
Inventors
- 👤 Clarence L Altenburger
- 👤 Frederic A Bourke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:57
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
A MILD CARBON STEEL CONSISTING ESSENTIALLY OF ABOUT 0.05-0.30% CARBON, ABOUT 0.25-1.50% MANGANESE, A MAXIMUM OF ABOUT 0.10% SILICON, ABOUT 0.005-0.2% COLUMBIUM AND THE REMAINDER SUBSTANTIALLY ALL IRON, THE STEEL BEING THE PRODUCT OF SOLIDIFICATION OF MOLTEN STEEL INCOMPLETELY DEOXIDIZED TO AN EXTENT TO PERMIT EVOLUTION OF AT LEAST SUFFICIENT CARBON MONOXIDE CONTAINING GAS TO OFFSET SUBSTANTIAL SHRINKAGE DURING SOLIDIFICATION.
Claim 2
Dependent Claim
60 words
A MILD CARBON STEEL CONSISTING ESSENTIALLY OF ABOUT 0.05-0.30% CARBON, ABOUT 0.25-1.50% MANGANESE, A MAXIMUM OF ABOUT 0.10% SILICON, ABOUT 0.005-0.2% COLUMBIUM AND THE REMAINDER SUBSTANTIALLY ALL IRON, THE STEEL BEING THE PRODUCT OF SOLIDIFICATION OF MOLTEN STEEL INCOMPLETELY DEOXIDIZED TO AN EXTENT TO PERMIT EVOLUTION OF AT LEAST SUFFICIENT CARBON MONOXIDE CONTAINING GAS TO OFFSET SUBSTANTIAL SHRINKAGE DURING SOLIDIFICATION.
References Cited (Backward Citations)
US2194178A
Cited
US2264355A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1964-11-27 | 1965-05-29 | 1965-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-11-27 | 1969-05-29 | 1969-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-11-27 | 1973-05-29 | 1973-11-28 | $7700.00 | Window Closed / Lapsed |