With the analysis among 148 patents, we discovered top 22 key players by total patent application. Sankyo Co., Ltd., Sanofi-Aventis SA, Rhone Poulenc Rorer are dominant in this area. They take 47.30% of the total patent filing.
Tokyo-to, Japan
Patent: 35
F. Hoffmann-La Roche Ltd.
Takeda Pharmaceutical Co., Ltd.
New Jersey, United States
Patent: 9
AstraZeneca Pharmaceutical Co., Ltd.
Jiangsu Sheng, China
Patent: 7
CITY OF ROME, Italy
Patent: 6
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