With the analysis among 106 patents, we discovered top 39 key players by total patent application. F. Hoffmann-La Roche Ltd., Union Carbide Corp., Eurand Pharmaceuticals, Inc. are dominant in this area. They take 21.70% of the total patent filing.
Wisconsin, United States
Patent: 8
Ohio, United States
Patent: 6
New York, United States
Patent: 3
New Jersey, United States
Patent: 3
Toyama-ken, Japan
Patent: 2
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