With the analysis among 630 patents, we discovered top 123 key players by total patent application. Mitsui Mining & Smelting Co., Ltd., Kyowa Chemical Industry Co. Ltd., Denka Corp. are dominant in this area. They take 34.92% of the total patent filing.
Tokyo-to, Japan
Patent: 101
Kagawa-ken, Japan
Patent: 71
New York, United States
Patent: 48
Tokyo-to, Japan
Patent: 27
Tokyo-to, Japan
Patent: 25
Aichi-ken, Japan
Patent: 24
Tokyo-to, Japan
Patent: 23
Tokyo-to, Japan
Patent: 22
Tokyo-to, Japan
Patent: 14
Tokyo-to, Japan
Patent: 14
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With the analysis among related 38 patents applied in the last 5 years. We discover 17 most active companies in this area. The fast-growing Tokuyama Corp., Denka Corp., TOSHIBA Corp. take 42.11% of patent filing during this period.
New York, United States
Patent: 5
Shiga-ken, Japan
Patent: 2
California, United States
Patent: 1
With the analysis among related 38 patents in last 5 years, we discover 2 new entrants.
Tokushima-ken, Japan
Patent: 1
California, United States
Patent: 1
With the analysis among 9 patents, we discovered top 1 universities and scientific research institutions by total patent application.