US3092491A
Expired / Lapsed
US
⏱️ 0.0 years remaining
High strength alloy steel for atmospheric and elevated temperature service
Assignee: Crucible Steel Company of America
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Filing: 1957-05-02
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Granted: 1963-06-04
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Expires: 1977-05-02
Abstract
No abstract record available.
Inventors
- 👤 Payson Peter
- 👤 Alvin E Nehrenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 10:31
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/22
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
AN ALLOY STEEL CONSISTING ESSENTIALLY OF ABOUT: 0.35 TO 0.45% CARBON, 0.3 TO 1% MANGANESE, 0.5 TO 2% SILICON, 2.5 TO 4% CHROMIUM, 2 TO 3% MOLYBDENUM, 0.1 TO 0.5% VANADIUM, UNDER 0.5% OF NICKEL, BALANCE SUBSTANTIALLY IRON, CHARACTERIZED BY A TENSILE STRENGTH IN THE QUENCHED AND TEMPERED CONDITION OF AT LEAST 290,000 P.S.I. AT ROOM TEMPERATURE AND AT LEAST 150,000 P.S.I. AT 1100*F., AND BY AN ACCOMPANYING REDUCTION OF AREA OF AT LEAST 28% AT ROOM AND ELEVATED TEMPERATURES UP TO 1100*F.
Claim 2
Dependent Claim
83 words
AN ALLOY STEEL CONSISTING ESSENTIALLY OF ABOUT: 0.35 TO 0.45% CARBON, 0.3 TO 1% MANGANESE, 0.5 TO 2% SILICON, 2.5 TO 4% CHROMIUM, 2 TO 3% MOLYBDENUM, 0.1 TO 0.5% VANADIUM, UNDER 0.5% OF NICKEL, BALANCE SUBSTANTIALLY IRON, CHARACTERIZED BY A TENSILE STRENGTH IN THE QUENCHED AND TEMPERED CONDITION OF AT LEAST 290,000 P.S.I. AT ROOM TEMPERATURE AND AT LEAST 150,000 P.S.I. AT 1100*F., AND BY AN ACCOMPANYING REDUCTION OF AREA OF AT LEAST 28% AT ROOM AND ELEVATED TEMPERATURES UP TO 1100*F.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-06-03 | 1966-12-03 | 1967-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-06-03 | 1970-12-03 | 1971-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-06-03 | 1974-12-03 | 1975-06-04 | $7700.00 | Window Closed / Lapsed |