Patent US5173254A successfully refreshed from Google Patents.
US5173254A
Expired / Lapsed
US
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Steel having excellent vibration-dampening properties and weldability
Assignee: JFE Steel Corp
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Filing: 1991-11-04
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Granted: 1992-12-22
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Expires: 2011-11-04
Abstract
Abstract Steel having excellent vibration-damping properties and weldability includes about 0.02 wt % or less of C, about 0.02 wt % or less of Si, and about 0.08 wt % or less of Mn. This steel also includes about 0.05 to 1.5 wt % of Cu, about 1.0 to 7.0 wt % of Al, about 0.008 wt % or less of N, and Fe and incidental impurities which together constitute the remaining wt %.
Inventors
- 👤 Keniti Amano
- 👤 Tomoya Koseki
- 👤 Shozaburo Nakano
- 👤 Syuzo Ueda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 19:52
CPC Classifications
C; C22; C22C; C22C38/00; C22C38/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
51 words
Steel having excellent vibration-damping properties, weldability, toughness and a tensile strength of not less than 41 kgf/mm 2 , said steel comprising about: 0.02 wt. % or less of C; 0.02 wt. % or less of Si; 0.08 wt. % or less of Mn; 0.05 to 1.5 wt. % of Cu;
Claim 2
Dependent Claim
51 words
Steel having excellent vibration-damping properties, weldability, toughness and a tensile strength of not less than 41 kgf/mm 2 , said steel comprising about: 0.02 wt. % or less of C; 0.02 wt. % or less of Si; 0.08 wt. % or less of Mn; 0.05 to 1.5 wt. % of Cu;
Claim 3
Dependent Claim
26 words
0 to 7.0 wt. % of Al; 0.008 wt. % or less of N; and Fe and incidental impurities which together constitute the remaining wt. %.
Claim 4
Dependent Claim
26 words
0 to 7.0 wt. % of Al; 0.008 wt. % or less of N; and Fe and incidental impurities which together constitute the remaining wt. %.
Claim 5
Dependent Claim
26 words
Steel having excellent vibration-damping properties, weldability, toughness and tensilve strength according to claim 1, said steel further comprising about 0.05 to 1.5 wt. % of Ni.
Claim 6
Dependent Claim
31 words
Steel having excellent vibration-damping properties, weldability, toughness and tensile strength according to claim 1 or 2, said steel having internal friction values Q -1 of not less than 12×10 -3 .
References Cited (Backward Citations)
GB1196212A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1995-12-22 | 1996-06-22 | 1996-12-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-12-22 | 2000-06-22 | 2000-12-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-12-22 | 2004-06-22 | 2004-12-22 | $7700.00 | Window Closed / Lapsed |