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US4710349A
Expired / Lapsed
US
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Highly conductive copper-based alloy
Assignee: Sumitomo Metal Mining Co Ltd
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Filing: 1987-03-05
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Granted: 1987-12-01
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Expires: 2007-03-05
Abstract
Abstract A highly conductive copper-based alloy containing 0.001 percent to 0.02 percent of tellurium, 0.05 percent to 0.3 percent of one element selected from iron and chromium, and 0 percent to 0.01 percent of phosphorous with the balance being copper and incidental impurities.
Inventors
- 👤 Shinsuke Yamazaki
- 👤 Rikio Takeda
- 👤 Iwao Uda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 22:32
CPC Classifications
C; C22; C22C; C22C9/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
44 words
A highly conductive copper-based alloy consisting essentially of, by weight, 0.001% to 0.02% of tellurium, 0.05% to 0.3% of one element selected from the group consisting of iron and chromium, and 0% to 0.01% of phosphorous with the balance being copper and incidental impurities.
Claim 2
Dependent Claim
44 words
A highly conductive copper-based alloy consisting essentially of, by weight, 0.001% to 0.02% of tellurium, 0.05% to 0.3% of one element selected from the group consisting of iron and chromium, and 0% to 0.01% of phosphorous with the balance being copper and incidental impurities.
Claim 3
Dependent Claim
19 words
The highly conductive copper-based alloy of claim 1, wherein the amount of phosphorous is 0.001% to 0.01% by weight.
References Cited (Backward Citations)
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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) | 1990-11-30 | 1991-06-01 | 1991-12-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-11-30 | 1995-06-01 | 1995-12-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-11-30 | 1999-06-01 | 1999-12-01 | $7700.00 | Window Closed / Lapsed |