US2858206A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Nickel-free, low-alloy, high-strength steel
Assignee: United States Steel Corp
•
Filing: 1956-05-04
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Granted: 1958-10-28
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Expires: 1976-05-04
Abstract
No abstract record available.
Inventors
- 👤 Joseph F Boyce
- 👤 Harold M Reichhold
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:55
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
46 words
A LOW-ALLOY, HIGH-STRENGTH, NICKEL-FREE STEEL CHARACTERIZED IN THE TEMPERED MARTENSITIC CONDITION IN THICKNESSES UP TO 1" BY A YIELD STRENGTH IN EXCESS OF 90,000 P. S. I. IN COMBINATION WITH GOOD-NOTCH TOUGHNESS AS EVIDENCED BY A TRANSITION TEMPERATURE BELOW -100*F. AND GOOD WELDABILITY, SAID STEEL CONTAINING
Claim 2
Dependent Claim
46 words
A LOW-ALLOY, HIGH-STRENGTH, NICKEL-FREE STEEL CHARACTERIZED IN THE TEMPERED MARTENSITIC CONDITION IN THICKNESSES UP TO 1" BY A YIELD STRENGTH IN EXCESS OF 90,000 P. S. I. IN COMBINATION WITH GOOD-NOTCH TOUGHNESS AS EVIDENCED BY A TRANSITION TEMPERATURE BELOW -100*F. AND GOOD WELDABILITY, SAID STEEL CONTAINING
References Cited (Backward Citations)
FR872774A
Cited
US2683086A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-10-27 | 1962-04-28 | 1962-10-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-10-27 | 1966-04-28 | 1966-10-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-10-27 | 1970-04-28 | 1970-10-28 | $7700.00 | Window Closed / Lapsed |