With the analysis among 144 patents, we discovered top 40 key players by total patent application. Société de Technologie Michelin, Michelin Recherche et Technique SA, Bridgestone Corp. are dominant in this area. They take 43.06% of the total patent filing.
Tokyo-to, Japan
Patent: 15
Nordrhein-Westfalen, Germany
Patent: 4
Hyogo-ken, Japan
Patent: 4
Mitsubishi Heavy Industries, Ltd.
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