With the analysis among 81 patents, we discovered top 16 key players by total patent application. Ricoh Co., Ltd., NTT DOCOMO, Inc., Siemens AG are dominant in this area. They take 48.15% of the total patent filing.
Tokyo-to, Japan
Patent: 18
Tokyo-to, Japan
Patent: 13
Kanagawa-ken, Japan
Patent: 4
Hampshire, United Kingdom
Patent: 2
Wabco Fahrzeugbremsen GmbH
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