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Top 50 Key Players companies in Alternator
by Most Patent Citation in the Japan in 2018

The Alternator top 50 is Discovery PatSnap’ annual ranking of the top 50 Most Patent Citation Alternator Key Players in the Japan. Discovery has identified the top key players, startups & unicorns, fast-growings, news entrants in 2018, 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
Nihon Denso KK
Manufacturing engineering,Mechanical engineering
patent citation: 6,151
2
Mitsubishi Electric Engineering Co., Ltd.
patent citation: 4,674
3
Toyota Motor Corp.
Sport utility vehicle,Mobile device,Public transport,
...[+2]
patent citation: 1,912
4
DENSO Corp.
Automotive engineering,Industrial robot,Programmable logic controller,
...[+2]
patent citation: 1,852
5
Hitachi Ltd.
Elevator,Electrical equipment,Electric motor,
...[+2]
patent citation: 1,532
6
Nissan Motor Co., Ltd.
Truck,Public transport,Automotive engineering,
...[+2]
patent citation: 1,164
7
Mazda Motor Corp.
Automotive engineering,Reciprocating engine,Manual transmission,
...[+2]
patent citation: 896
8
Honda Motor Co., Ltd.
Automotive engineering,Manufacturing engineering,Sport utility vehicle,
...[+2]
patent citation: 799
9
Yazaki Corp.
Electronic component,Automotive engineering,Cable harness,
...[+2]
patent citation: 778
10
Mitsubishi Motors Corp.
Sport utility vehicle,Automotive engineering,Electric vehicle,
...[+2]
patent citation: 632
11
NSK Ltd.
Ball bearing,Automatic transmission,Bearing (navigation),
...[+2]
patent citation: 538
12
Sumitomo Wiring Systems Ltd.
High voltage,Electronics,Power steering,
...[+2]
patent citation: 388
13
Sumitomo Electric Industries Ltd.
Electronics,Optical fiber,Optical fiber cable,
...[+2]
patent citation: 356
14
Sumitomo Electric
Optical fiber,Electronics,Optical fiber cable
patent citation: 356
15
Autonetworks Technologies Ltd.
patent citation: 293
16
Isuzu Motors Ltd.
Truck,Public transport,Diesel engine,
...[+2]
patent citation: 278
17
Sawafuji Electric Co., Ltd.
Electrical equipment,Diesel generator,Manufacturing engineering,
...[+2]
patent citation: 269
18
Daihatsu Motor Co., Ltd.
Automotive engineering,Proton exchange membrane fuel cell,Electric bus,
...[+2]
patent citation: 261
19
Toyota Industries Corp.
Textile,Software,Automotive engineering,
...[+2]
patent citation: 249
20
NTN Toyo Bearing Co., Ltd.
Ball bearing
patent citation: 239
21
Subaru Corp.
Automotive engineering,Public transport,Aerospace,
...[+2]
patent citation: 238
22
Suzuki Co., Ltd.
Semiconductor,Electronics,Electronic component,
...[+2]
patent citation: 207
23
Fujitsu General Ltd.
Air conditioning,Automation,Mechanical engineering,
...[+2]
patent citation: 187
24
Bando Chemical Industries Ltd.
Elastomer,Belting,Natural rubber,
...[+2]
patent citation: 166
25
Hitachi Construction Machinery Tierra Co., Ltd.
Agricultural machinery,Manufacturing engineering,Mechanical engineering
patent citation: 155
26
Hitachi Car Engineering Co., Ltd.
Automotive engineering
patent citation: 137
27
Mitsubishi Fuso Truck & Bus Corp.
Truck,Automotive engineering,Chassis
patent citation: 126
28
Sanshin Kogyo Co., Ltd.
Hot air oven,Automation,Manufacturing engineering,
...[+2]
patent citation: 120
29
Valeo Thermal Systems Japan Corp.
Thermal,Automation,Manufacturing engineering,
...[+2]
patent citation: 116
30
Panasonic Holdings Corp.
Semiconductor,Industrial engineering,Electronics,
...[+2]
patent citation: 102
31
Matsushita Electronics Corp.
Electronics,Computer hardware,DVD player,
...[+2]
patent citation: 102
32
Aisin Corp.
Brake,Automotive engineering,Navigation system,
...[+2]
patent citation: 100
33
TOSHIBA Corp.
Semiconductor,Computer hardware,Electronics,
...[+2]
patent citation: 89
34
PMC KK
Web design
patent citation: 81
35
Stanley Electric Co., Ltd.
Headlamp,Automotive engineering,Backlight,
...[+2]
patent citation: 79
36
Hitachi Power Semiconductor Device Ltd.
Semiconductor,Power semiconductor device,Silicon carbide,
...[+2]
patent citation: 79
37
Unisis Corp.
Medical equipment,Medicine,Biopsy
patent citation: 67
38
Yuasa Co., Ltd.
Software development,Software,Accounting
patent citation: 66
39
Japan Storage Battery Co., Ltd.
Electronics
patent citation: 66
40
Yamaha Motor Co., Ltd.
Robotics,Industrial robot,Automotive engineering,
...[+2]
patent citation: 63
41
Furukawa Electric Co., Ltd.
Optical fiber,Renewable energy,Optoelectronics,
...[+2]
patent citation: 59
42
JTEKT Corp.
Power steering,Automotive engineering,Steering system,
...[+2]
patent citation: 58
43
Kubota Corp.
Tractor,Manufacturing engineering,Combine harvester,
...[+2]
patent citation: 55
44
Toyota Koki KK
patent citation: 55
45
Diesel Kiki Co. Ltd.
Automotive engineering
patent citation: 54
46
Mitsubishi Kogyo KK
patent citation: 50
47
Mitsuba Corp.
Automotive engineering,Gasoline,Windscreen wiper,
...[+2]
patent citation: 49
48
Kokusan Denki Co., Ltd.
Automotive engineering,Agricultural machinery,Magnet
patent citation: 49
49
Hino Motors, Ltd.
Truck,Public transport,Gasoline,
...[+2]
patent citation: 45
50
SANYO Electric Co., Ltd.
Semiconductor,Computer hardware,Software,
...[+2]
patent citation: 43
Page generation time: Jun 26 2025