With the analysis among 30 patents, we discovered top 20 key players by total patent application. Medtronic, Inc., Seiko Epson Corp., Hitachi Ltd. are dominant in this area. They take 20.00% of the total patent filing.
Minnesota, United States
Patent: 3
Nagano-ken, Japan
Patent: 2
Illinois, United States
Patent: 1
Shiga-ken, Japan
Patent: 1
Illinois, United States
Patent: 1
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