With 13 Network Security related patents published between 2002 and 2022, Hitachi Ltd holds the most number of Network Security patents in Japan.
The second largest number of Network Security related patents were published by Ricoh Co Ltd with 13 patents. The third largest number of Network Security related patents were published by The Boeing Co with 12 patents. The fourth largest number of Network Security related patents were published by Huawei Investment & Holding Co Ltd with 12 patents, of which 91.7% was contributed by Huawei Technologies Co Ltd. The fifth largest number of Network Security related patents were published by Microsoft Corp with 9 patents.
The top five patent holders, i.e., Hitachi Ltd, Ricoh Co Ltd, The Boeing Co, Huawei Investment & Holding Co Ltd, and Microsoft Corp, together held 59 Network Security patents during the period.
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