With the analysis among 520 patents, we discovered top 95 key players by total patent application. Sony Group Corp., TOSHIBA Corp., Hitachi Ltd. are dominant in this area. They take 30.19% of the total patent filing.
Tokyo-to, Japan
Patent: 57
Tokyo-to, Japan
Patent: 52
Tokyo-to, Japan
Patent: 48
Osaka-fu, Japan
Patent: 42
Tokyo-to, Japan
Patent: 19
Tokyo-to, Japan
Patent: 18
Toyama-ken, Japan
Patent: 18
Kanagawa-ken, Japan
Patent: 17
Fukushima-ken, Japan
Patent: 15
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