With the analysis among 113 patents, we discovered top 28 key players by total patent application. GAF Corp., Kalle GmbH, Hitachi Ltd. are dominant in this area. They take 29.20% of the total patent filing.
New Jersey, United States
Patent: 14
Hessen, Germany
Patent: 12
Indiana, United States
Patent: 7
New York, United States
Patent: 4
Delaware, United States
Patent: 4
Texas, United States
Patent: 4
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