US5077005A
Expired / Lapsed
US
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High-conductivity copper alloys with excellent workability and heat resistance
Assignee: Nippon Mining Holdings Inc
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Filing: 1990-02-27
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Granted: 1991-12-31
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Expires: 2010-02-27
Abstract
Abstract There is provided a high-conductivity copper alloy with excellent workability and heat resistance, characterized by the alloy consists essentially of, by weight, at least one element selected from the group consisting of -10-100 ppm In (indium), 10-1000 ppm Ag (silver), -10-300 ppm Cd (cadmium), 10-50 ppm Sn (tin), -10-50 ppm Sb (antimony), 3-30 ppm Pb (lead), -3-30 ppm Bi (bismuth), 3-30 ppm Zr (zirconium), -3-50 ppm Ti (titanium) and 3-30 ppm Hf (hafnium), - and the balance copper. S (sulfur) and O (oxygen) as unavoidable impurities are controlled to amounts of less than 3 ppm S, and less than 5 ppm O, respectively. Other unavoidable impurities are controlled to less than 3 ppm in total amount. The alloy is very suitable for applications such as forming magnet wires and other very thin wires, lead wires for electronic components, lead members for tape automated bonding (TAB) and the like, and members for printed-circuit boards.
Inventors
- 👤 Masanori Kato
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:58
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/02; H01B1/026; C; C22; C22C; C22C9/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
118 words
A high-conductivity copper alloy consisting essentially of 6N copper and at least one element selected from the group consisting of, by weight, 10 to 100 ppm indium, 10 to 1000 ppm silver, 10 to 300 ppm cadmium, 10 to 50 ppm tin, 10 to 50 ppm antimony, 3 to 30 ppm lead, 3to 30 ppm bismuth, 3 to 30 ppm zirconium, 3 to 50 ppm titanium, and 3 to 30 ppm hafnium, wherein the amount of sulfur as an unavoidable impurity is controlled to less than 3 ppm, the amount of oxygen as an unavoidable impurity is controlled to less than 5 ppm, and the total amount of other unavoidable impurities is controlled to less than 3 ppm.
Claim 2
Dependent Claim
118 words
A high-conductivity copper alloy consisting essentially of 6N copper and at least one element selected from the group consisting of, by weight, 10 to 100 ppm indium, 10 to 1000 ppm silver, 10 to 300 ppm cadmium, 10 to 50 ppm tin, 10 to 50 ppm antimony, 3 to 30 ppm lead, 3to 30 ppm bismuth, 3 to 30 ppm zirconium, 3 to 50 ppm titanium, and 3 to 30 ppm hafnium, wherein the amount of sulfur as an unavoidable impurity is controlled to less than 3 ppm, the amount of oxygen as an unavoidable impurity is controlled to less than 5 ppm, and the total amount of other unavoidable impurities is controlled to less than 3 ppm.
Claim 3
Dependent Claim
119 words
A high-conductivity copper alloy consisting essentially of 6N copper and at least one element selected from the group consisting of, by weight, 30 to 80 ppm silver, 100 to 800 ppm silver, 30 to 150 ppm cadmium, 20 to 40 ppm tin, 20 to 40 ppm antimony, 10 to 25 ppm lead, 10 to 25 ppm bismuth, 5 to 20 ppm zirconium, 5 to 30 ppm titanium, and 5 to 20 ppm hafnium, wherein the amount of sulfur as an unavoidable impurity is controlled to less than 3 ppm, the amount of oxygen as an unavoidable impurity is controlled to less than 5 ppm, and the total amount of other unavoidable impurities is controlled to less than 3 ppm.
Claim 4
Dependent Claim
119 words
A high-conductivity copper alloy consisting essentially of 6N copper and at least one element selected from the group consisting of, by weight, 30 to 80 ppm silver, 100 to 800 ppm silver, 30 to 150 ppm cadmium, 20 to 40 ppm tin, 20 to 40 ppm antimony, 10 to 25 ppm lead, 10 to 25 ppm bismuth, 5 to 20 ppm zirconium, 5 to 30 ppm titanium, and 5 to 20 ppm hafnium, wherein the amount of sulfur as an unavoidable impurity is controlled to less than 3 ppm, the amount of oxygen as an unavoidable impurity is controlled to less than 5 ppm, and the total amount of other unavoidable impurities is controlled to less than 3 ppm.
Claim 5
Dependent Claim
12 words
A wire formed from copper alloy according to claim 1 or 2.
Claim 6
Dependent Claim
13 words
A magnet wire formed from copper alloy according to claim 1 or 2.
Claim 7
Dependent Claim
17 words
A lead wire for an electronic component formed from copper alloy according to claim 1 or 2.
Claim 8
Dependent Claim
17 words
A lead member for tape automated bonding formed from copper alloy according to claim 1 or 2.
Claim 9
Dependent Claim
16 words
A member for a printed-circuit board formed from copper alloy according to claim 1 or 2.
References Cited (Backward Citations)
JPS56139643A
Cited
US4676827A
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US4717436A
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JPS63238232A
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EP0296596A1
Cited
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Cited
JPH01234537A
Cited
JPH01246334A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1994-12-30 | 1995-07-01 | 1995-12-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-12-30 | 1999-07-01 | 1999-12-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-12-30 | 2003-07-01 | 2003-12-31 | $7700.00 | Window Closed / Lapsed |