With the analysis among 88 patents, we discovered top 22 key players by total patent application. NEC Corp., Fujitsu Ltd., Nippon Telegraph & Telephone Corp. are dominant in this area. They take 55.68% of the total patent filing.
Tokyo-to, Japan
Patent: 27
Tokyo-to, Japan
Patent: 15
Nippon Telegraph & Telephone Corp.
Mitsubishi Electric Corp.
Matsushita Electronics Corp.
Kanagawa-ken, Japan
Patent: 3
ANT Nachrichtentechnik GmbH
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