With the analysis among 123 patents, we discovered top 57 key players by total patent application. Mitsubishi Hitachi Power Systems, Taiheiyo Cement Corp., Yamaha Corp. are dominant in this area. They take 21.14% of the total patent filing.
Kanagawa-ken, Japan
Patent: 10
Chiba-ken, Japan
Patent: 8
Shizuoka-ken, Japan
Patent: 8
Virginia, United States
Patent: 6
California, United States
Patent: 5
Kanagawa-ken, Japan
Patent: 3
Mitsubishi UBE Cement Corp.
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