Copper-free wire
US6696170B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 29, 2002 |
| Grant date | Feb 24, 2004 |
| Priority date | — |
| Expiry date | Apr 17, 2022 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12431
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A copper-free wire having worked faces meaning faces drawn with dies and unworked faces continued in the circumferential direction on a wire surface, the copper-free wire has LD/LT ranging from 0.51 to 0.84 and LY ranging from 10 to 40 &mgr;m when measurement lines are drawn at every 5 &mgr;m in a width direction of a measurement area (10,000 &mgr;m2=100 &mgr;m×100 &mgr;m) on the wire surface about 4 wire faces, in which each of the measurement straight lines having a length in the circumferential direction includes at least two worked faces and unworked faces, respectively, in the measurement area, and its starting point and termination point which are all positioned on contact points of the worked faces and the unworked faces.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.