With the analysis among 41 patents, we discovered top 30 key players by total patent application. Sumitomo Chemical Co., Ltd., Earth Corp., J. R. Geigy AG are dominant in this area. They take 29.27% of the total patent filing.
Hyogo-ken, Japan
Patent: 2
Hyogo-ken, Japan
Patent: 1
Fukui-ken, Japan
Patent: 1
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