With the analysis among 81 patents, we discovered top 23 key players by total patent application. Ludwig Merckle,, Les Produits Chimiques Delmar, Inc., Bristol Myers Co. are dominant in this area. They take 14.81% of the total patent filing.
New York, United States
Patent: 4
Shizuoka-ken, Japan
Patent: 2
New York, United States
Patent: 1
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