Thin copper foil, and process and apparatus for the manufacture thereof
US6291080A · kind A · utility
1Cited by
1References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 11, 2000 |
| Grant date | Sep 18, 2001 |
| Priority date | — |
| Expiry date | Apr 11, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/12431
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
Copper foil produced on a rotating drum cathode machine, wherein each of the outer edge portions of a web of the foil has a thickness greater than the thickness of the central portion of the web. In the process and apparatus used to electrodeposit the foil on a drum cathode, electric current is passed through an electrolyte to the cathode from outboard edge anodes at a current density greater than the current density passed from a central anode to the cathode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.