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Top 5 Key Players companies in 5G
by Most Research Publications in the Japan in 2021

The 5G top 5 is Discovery PatSnap’ annual ranking of the top 5 Most Research Publications 5G Key Players in the Japan. Discovery has identified the top key players, startups & unicorns, fast-growings, news entrants in 2021, ranking from differnt perspectives, including patent filing intensity, academic research capability, news media heat. The company list is generated from various data types.
#
Company Name
Region
Tech Topics
Total
1
NTT DoCoMo, Inc.
Telecommunications,Wireless,Mobile device,
...[+2]
Literature: 137
2
Nippon Telegraph & Telephone Corp.
Telecommunications,Cloud database,Data center,
...[+2]
Literature: 64
3
National Institute of Information & Communications Technology
Information and Communications Technology,Association (object-oriented programming)
Literature: 38
4
Fujitsu Ltd.
Cloud computing,Enterprise software,Information technology management,
...[+2]
Literature: 33
5
NEC Corp.
Virtualization,Big data,Network security,
...[+2]
Literature: 24
Page generation time: Jul 20 2025