With the analysis among 79 patents, we discovered top 38 key players by total patent application. DuPont Merck Pharmaceutical Co., Novartis AG, Hoechst AG are dominant in this area. They take 20.25% of the total patent filing.
Delaware, United States
Patent: 6
Basel-Stadt, Switzerland
Patent: 5
California, United States
Patent: 4
New York, United States
Patent: 4
Delaware, United States
Patent: 3
Derbyshire, United Kingdom
Patent: 3
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