With the analysis among 32 patents, we discovered top 19 key players by total patent application. Hitachi Ltd., Telefonaktiebolaget LM Ericsson, Bridgestone Corp. are dominant in this area. They take 18.75% of the total patent filing.
Telefonaktiebolaget LM Ericsson
California, United States
Patent: 2
Hyogo-ken, Japan
Patent: 2
Hyogo-ken, Japan
Patent: 1
Fukushima-ken, Japan
Patent: 1
Wakayama-ken, Japan
Patent: 1
North Carolina, United States
Patent: 1
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