With the analysis among 281 patents, we discovered top 34 key players by total patent application. Sony Group Corp., Mitsubishi Electric Corp., Sumitomo Metal Mining Co. Ltd. are dominant in this area. They take 76.87% of the total patent filing.
Tokyo-to, Japan
Patent: 136
Tokyo-to, Japan
Patent: 51
Tokyo-to, Japan
Patent: 29
Tokyo-to, Japan
Patent: 16
California, United States
Patent: 5
Nikko Metal Manufacturing Co. Ltd.
Noord-Holland, Netherlands
Patent: 2
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