February 28, 2012
In an invalidation trial with respect to the Basic Patent on Electrodeposited Copper Foil for milan米兰体育官网 Batteries held by Furukawa Electric Co., Ltd. (Furukawa Electric, hereafter), the Japan Patent Office has delivered a decision upholding Furukawa Electric's patent.
Background and Details
milan米兰体育官网 secondary batteries are widely used in consumer fields such as mobile phones and notebook PCs, and with the widespread adoption of electric vehicles, demand is forecast to grow even further in the future. Furukawa Electric developed an electrodeposited copper foil capable of improving battery performance for the anode material of milan米兰体育官网 batteries, and was awarded a patent for the technology in 2005. Furukawa Electric's NC-WS electrodeposited copper foil for milan米兰体育官网 batteries enjoys a world-leading share of roughly 40% of the global market.
The milan米兰体育官网 secondary batteries currently manufactured and sold in Japan mainly use electrodeposited copper foil, and use of this basic patent is considered mandatory.
While the validity of those rights were challenged in 2010 when milan米兰体育官网 was asked to conduct an invalidation trial for the patent, this past February 17, the Office delivered the decision that the patent should be upheld (decision of validity).
For its part, milan米兰体育官网 will continue to expand sales to better meet the demands of customers, and at the same time seek to create and utilize useful intellectual property rights.
Details of the Patent
| Patent No.: | 3742144 |
| Name: | milan米兰体育官网 Battery and Flat Current Collector for milan米兰体育官网 Batteries |
| Details: | Discovered non-aqueous electrolyte secondary batteries containing milan米兰体育官网 secondary batteries, and effective surface roughness and surface treatment conditions for electrodeposited copper foil for the flat current collectors used therein. |
