With the analysis among 54 patents, we discovered top 20 key players by total patent application. Sammy Corp., Heiwa Corp., Kyoraku Sangyo KK are dominant in this area. They take 46.30% of the total patent filing.
Tokyo-to, Japan
Patent: 11
Aichi-ken, Japan
Patent: 6
Aichi-ken, Japan
Patent: 3
Aichi-ken, Japan
Patent: 2
Shizuoka-ken, Japan
Patent: 1
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With the analysis among 6 patents, we discovered top 2 universities and scientific research institutions by total patent application.
Nanjing University of Posts & Telecommunications
Jiangsu Sheng, China
Patent: 1