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Top 20 Key Players companies in Cable tester
by Most Patent Citation in the Japan in 2020

The Cable tester top 20 is Discovery PatSnap’ annual ranking of the top 20 Most Patent Citation Cable tester Key Players in the Japan. Discovery has identified the top key players, startups & unicorns, fast-growings, news entrants in 2020, ranking from differnt perspectives, including patent filing intensity, academic research capability, news media heat. The company list is generated from various data types.
A cable tester is an electronic device used to verify the electrical connections in a signal cable or other wired assembly. Basic cable testers are continuity testers that verify the existence of a conductive path between ends of the cable, and verify the correct wiring of connectors on the cable. More advanced cable testers can measure the signal transmission properties of the cable such as its resistance, signal attenuation, noise and interference.
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Company Name
Region
Tech Topics
Total
1
Nippon Telegraph & Telephone Corp.
Telecommunications,Cloud database,Data center,
...[+2]
patent citation: 20
2
NEC Fielding Ltd.
System deployment,Information technology consulting,Personal computer,
...[+1]
patent citation: 16
3
Nippon Densetsu Kogyo Co., Ltd.
Construction engineering,Electric light,Telecommunications equipment,
...[+2]
patent citation: 13
4
Daido Signal Co., Ltd.
Railway signal,Electronics,Electrical equipment
patent citation: 13
5
NEC Corp.
Virtualization,Big data,Network security,
...[+2]
patent citation: 10
6
SWCC Showa Holdings Co., Ltd.
Electronics,Vibration control,System construction,
...[+2]
patent citation: 10
7
CHUDENKO CORP.
Construction engineering,Pylon,Firefighting,
...[+2]
patent citation: 5
8
Hitachi Ltd.
Elevator,Electrical equipment,Electric motor,
...[+2]
patent citation: 4
9
Fujitsu Network Solutions Ltd.
Telecommunications
patent citation: 4
10
Japan Engineering Co., Ltd.
Semiconductor,Automation,Manufacturing engineering,
...[+2]
patent citation: 4
11
Fujitsu Ltd.
Cloud computing,Enterprise software,Information technology management,
...[+2]
patent citation: 3
12
Kyocera Corp.
Semiconductor,Electronics,Telecommunications,
...[+2]
patent citation: 3
13
Panasonic Holdings Corp.
Semiconductor,Industrial engineering,Electronics,
...[+2]
patent citation: 1
14
Oki Electric Industry Co., Ltd.
Telecommunications,Call centre,Software,
...[+2]
patent citation: 1
15
Matsushita Electronics Corp.
Electronics,Computer hardware,DVD player,
...[+2]
patent citation: 1
16
Yokogawa Electric Corp.
Automation,Systems design,Programmable logic controller,
...[+2]
patent citation: 0
17
Musashi Seimitsu Industry Co., Ltd.
Balance shaft,Camshaft,Automotive engineering,
...[+2]
patent citation: 0
18
TOKYO ROPE MFG. CO., LTD.
Wire rope,Industrial engineering,Metal fiber,
...[+2]
patent citation: 0
19
Hitachi Cable Ltd.
Electronics,Metal,Optical fiber,
...[+2]
patent citation: 0
20
Jefcom Co. Ltd.
patent citation: 0
Page generation time: Jun 25 2025