US4430298A
Expired / Lapsed
US
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Copper alloys for electric and electronic devices and method for producing same
Assignee: Kobe Steel Ltd
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Filing: 1983-06-06
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Granted: 1984-02-07
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Expires: 2003-06-06
Abstract
Abstract A copper alloy for electric and electronic devices, comprising: 3.0-3.5 wt % of Ni, 0.5-0.9 wt % of Si, 0.02-1.0 wt % of Mn, 0.1-5.0 wt % of Zn and the balance Cu and the inevitable impurities.
Inventors
- 👤 Motohisa Miyafuji
- 👤 Takashi Matsui
- 👤 Hidekazu Harada
- 👤 Masumitsu Soeda
- 👤 Shin Ishikawa
- 👤 Hiroshi Murakado
- 👤 Hiroaki Kawamoto
- 👤 Takeo Tabuchi
- 👤 Kunio Kamada
- 👤 Yasuhiro Nakashima
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 15:09
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/02; H01B1/026; C; C22; C22C; C22C9/00; C22C9/06
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
33 words
A copper alloy for electric and electronic devices, comprising: 3.0-3.5 wt% of Ni, 0.5-0.9 wt% of Si, 0.02-1.0 wt% of Mn, 0.1-5.0 wt% of Zn and the balance Cu and the inevitable impurities.
Claim 2
Dependent Claim
33 words
A copper alloy for electric and electronic devices, comprising: 3.0-3.5 wt% of Ni, 0.5-0.9 wt% of Si, 0.02-1.0 wt% of Mn, 0.1-5.0 wt% of Zn and the balance Cu and the inevitable impurities.
Claim 3
Dependent Claim
37 words
A copper alloy for electric and electronic devices, comprising: 3.0-3.5 wt% of Ni, 0.5-0.9 wt% of Si, 0.02-1.0 wt% of Mn, 0.1-5.0 wt% of Zn, 0.005-0.1 wt% of Cr, and the balance Cu and the inevitable impurities.
Claim 4
Dependent Claim
37 words
A copper alloy for electric and electronic devices, comprising: 3.0-3.5 wt% of Ni, 0.5-0.9 wt% of Si, 0.02-1.0 wt% of Mn, 0.1-5.0 wt% of Zn, 0.005-0.1 wt% of Cr, and the balance Cu and the inevitable impurities.
Claim 5
Independent Claim
93 words
A method for producing a copper alloy for electric and electronic devices, comprising the steps of: (a) subjecting to hot working a copper alloy which comprises 3.0-3.5 wt% of Ni, 0.5-0.9 wt% of Si, 0.02-1.0 wt% of Mn, 0.1-5.0 wt% of Zn, optionally containing 0.005-0.1 wt% of Cr, and the balance Cu and the inevitable impurities; (b) cooling the alloy at a rate of over 15° C. per second from a temperature exceeding 600° C.; and (c) after cold working, annealing the alloy at 400° C.-550° C. for 5 minutes to 4 hours.
Claim 6
Independent Claim
93 words
A method for producing a copper alloy for electric and electronic devices, comprising the steps of: (a) subjecting to hot working a copper alloy which comprises 3.0-3.5 wt% of Ni, 0.5-0.9 wt% of Si, 0.02-1.0 wt% of Mn, 0.1-5.0 wt% of Zn, optionally containing 0.005-0.1 wt% of Cr, and the balance Cu and the inevitable impurities; (b) cooling the alloy at a rate of over 15° C. per second from a temperature exceeding 600° C.; and (c) after cold working, annealing the alloy at 400° C.-550° C. for 5 minutes to 4 hours.
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) | 1987-02-06 | 1987-08-08 | 1988-02-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-02-06 | 1991-08-08 | 1992-02-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-02-06 | 1995-08-08 | 1996-02-07 | $7700.00 | Window Closed / Lapsed |