With the analysis among 99 patents, we discovered top 45 key players by total patent application. Idemitsu Kosan Co., Ltd., Samsung Electronics Co., Ltd., Ricoh Co., Ltd. are dominant in this area. They take 34.34% of the total patent filing.
Tokyo-to, Japan
Patent: 14
Indiana, United States
Patent: 3
New York, United States
Patent: 3
New Jersey, United States
Patent: 2
Miyazaki-ken, Japan
Patent: 2
Kanagawa-ken, Japan
Patent: 2
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