With the analysis among 121 patents, we discovered top 35 key players by total patent application. 3M Co., Crown Zellerbach Corp., Procter & Gamble Co. are dominant in this area. They take 18.18% of the total patent filing.
Minnesota, United States
Patent: 9
California, United States
Patent: 7
Ohio, United States
Patent: 6
Minnesota, United States
Patent: 6
Ohio, United States
Patent: 5
A E Staley Manufacturing Co
Pennsylvania, United States
Patent: 4
Michigan, United States
Patent: 4
Washington, United States
Patent: 4
Texas, United States
Patent: 3
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