Facility
Murata Energy (Former Sony Energy Devices) Koriyama Plant (Fukushima)
Murata's battery manufacturing facility in Koriyama, Fukushima Prefecture — the former Sony Energy Devices Corporation plant acquired by Murata in 2017. This is the site where Sony continued lithium cobalt oxide battery production after inventing the LCO cell chemistry in 1991. The facility now produces small-format LCO cells (thin, flexible, coin formats) for wearables, hearing aids, and IoT under Murata branding. Koriyama is also the location of AGC Electronics' EUV photomask blank plant — coincidentally making Koriyama a concentration point for two entirely unrelated critical supply chains. Source: https://www.murata.com/en-us/about/newsroom/news/product/battery/2017/0801
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