With the analysis among 44 patents, we discovered top 20 key players by total patent application. NEC Corp., Siemens Mobile Communications SpA, Nortel Networks Corp. are dominant in this area. They take 34.09% of the total patent filing.
Siemens Mobile Communications SpA
Mitsubishi Electric Corp.
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With the analysis among 3 patents, we discovered top 1 universities and scientific research institutions by total patent application.