With the analysis among 677 patents, we discovered top 47 key players by total patent application. Rohm & Haas Co., SK Chemicals Co. Ltd., Somar Corp. are dominant in this area. They take 83.60% of the total patent filing.
Pennsylvania, United States
Patent: 518
Gyeonggi-do, South Korea
Patent: 34
Tokyo-to, Japan
Patent: 14
Osaka-fu, Japan
Patent: 12
Beijing Shi, China
Patent: 6
New York, United States
Patent: 5
Rheinland-Pfalz, Germany
Patent: 4
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