US2586042A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low-alloy high-yield strength weldable steel
Assignee: United States Steel Corp
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Filing: 1951-04-06
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Granted: 1952-02-19
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Expires: 1971-04-06
Abstract
No abstract record available.
Inventors
- 👤 John M Hodge
- 👤 Richard D Manning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:56
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/18; C22C38/40; C22C38/54
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
82 words
A LOW-ALLOY, HIGH-STRENGTH STEEL, CHARACTERIZED BY GOOD WELDABILITY AND TOUGHNESS, WHEN HEAT TREATED BY COOLING SUFFICIENTLY RAPIDLY FROM AN AUSTENITIZING TEMPERATURE TO OBTAIN A MARTENSITIC MICROSTRUCTURE AND THEREAFTER TEMPERING AT TEMPERATURES OVER 1100* F., SAID STEEL COMPRISING FROM .10 TO .20% CARBON, .60 TO 1.00% MANGANESE, .70 TO 1.00% NICKEL, .40 TO .80% CHROMIUM, .40 TO 60% MOLYBDENUM, .03 TO .10 VANADIUM, .002 TO .006% BORON, .15 TO .35% SILICON, .0 TO .50% COPPER, BALANCE IRON AND RESIDUAL AMOUNTS OF OTHER ELEMENTS.
Claim 2
Dependent Claim
82 words
A LOW-ALLOY, HIGH-STRENGTH STEEL, CHARACTERIZED BY GOOD WELDABILITY AND TOUGHNESS, WHEN HEAT TREATED BY COOLING SUFFICIENTLY RAPIDLY FROM AN AUSTENITIZING TEMPERATURE TO OBTAIN A MARTENSITIC MICROSTRUCTURE AND THEREAFTER TEMPERING AT TEMPERATURES OVER 1100* F., SAID STEEL COMPRISING FROM .10 TO .20% CARBON, .60 TO 1.00% MANGANESE, .70 TO 1.00% NICKEL, .40 TO .80% CHROMIUM, .40 TO 60% MOLYBDENUM, .03 TO .10 VANADIUM, .002 TO .006% BORON, .15 TO .35% SILICON, .0 TO .50% COPPER, BALANCE IRON AND RESIDUAL AMOUNTS OF OTHER ELEMENTS.
References Cited (Backward Citations)
US2478420A
Cited
US2528867A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1955-02-18 | 1955-08-20 | 1956-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1959-02-18 | 1959-08-20 | 1960-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1963-02-18 | 1963-08-20 | 1964-02-19 | $7700.00 | Window Closed / Lapsed |