With the analysis among 88 patents, we discovered top 29 key players by total patent application. Sandoz AG, Lonza AG, Aventis Pharma are dominant in this area. They take 39.77% of the total patent filing.
Valais, Switzerland
Patent: 12
Nordrhein-Westfalen, Germany
Patent: 5
Sumitomo Chemical Co., Ltd.
Zhejiang Hisun Pharmaceutical Co., Ltd.
Zhejiang Sheng, China
Patent: 4
Alfred E. Tiefenbacher (GmbH & Co. KG)
Hamburg, Germany
Patent: 4
Nordrhein-Westfalen, Germany
Patent: 3
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