With the analysis among 190 patents, we discovered top 22 key players by total patent application. Ciba-Geigy AG, Bayer AG, Hoechst AG are dominant in this area. They take 40.53% of the total patent filing.
Nordrhein-Westfalen, Germany
Patent: 29
Hessen, Germany
Patent: 18
Hessen, Germany
Patent: 17
New Jersey, United States
Patent: 8
Shanghai Shi, China
Patent: 4
Delaware, United States
Patent: 3
Imperial Chemical Industries Ltd.
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