With the analysis among 181 patents, we discovered top 43 key players by total patent application. Société Chimique De La Grande Paroisse, Texaco Development Corp., W.R. Grace & Co. are dominant in this area. They take 26.52% of the total patent filing.
Texas, United States
Patent: 16
Delaware, United States
Patent: 5
Illinois, United States
Patent: 4
Nordrhein-Westfalen, Germany
Patent: 3
Delaware, United States
Patent: 3
New York, United States
Patent: 3
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