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US4279967A
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Soft copper alloy conductors and their method of manufacture
Assignee: Sumitomo Electric Industries Ltd
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Filing: 1980-04-23
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Granted: 1981-07-21
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Expires: 2000-04-23
Abstract
Abstract Soft copper alloy conductors having a 0.2% proof stress of 12 kg/mm 2 or less which contains 5-200 p.p.m. of calcium, the balance substantially consisting of copper, and hot-dip coated copper alloy conductors made by coating the surface of copper alloy conductors of said composition with tin or lead or their alloy by hot-dipping, and a method of manufacturing said copper alloy conductors.
Inventors
- 👤 Kazuo Sawada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:29
CPC Classifications
H; H01; H01B; H01B1/00; H01B1/02; H01B1/026; C; C22; C22C; C22C9/00; C23; C23C; C23C2/00; C23C2/04; C23C2/08; C23C2/10; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12687; Y10T428/12694; Y10T428/12708; Y10T428/12715
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
45 words
A soft copper alloy conductor which consists essentially of 5-200 ppm of calcium, the balance being substantially copper, and a coating on the surface of the copper alloy conductor of at least one metal selected from the group consisting of tin, lead and their alloys.
Claim 2
Dependent Claim
45 words
A soft copper alloy conductor which consists essentially of 5-200 ppm of calcium, the balance being substantially copper, and a coating on the surface of the copper alloy conductor of at least one metal selected from the group consisting of tin, lead and their alloys.
Claim 3
Dependent Claim
31 words
The soft copper alloy conductor of claim 1 wherein said coating is made by hot dipping the conductor with at least one of the aforesaid metals selected from the aforesaid group.
Claim 4
Dependent Claim
23 words
The soft copper alloy conductor of claim 1 wherein the conductor has a 0.2% proof stress which is 12 kg/mm 2 or less.
Claim 5
Dependent Claim
14 words
The soft copper alloy conductor of claim 2 which contains 30-400 ppm of oxygen.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1984-07-20 | 1985-01-19 | 1985-07-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-07-20 | 1989-01-19 | 1989-07-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-07-20 | 1993-01-19 | 1993-07-21 | $7700.00 | Window Closed / Lapsed |