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Top 100 Key Players companies in Zener diode
by Most Patent Citation in the Japan in 2019

The Zener diode top 100 is Discovery PatSnap’ annual ranking of the top 100 Most Patent Citation Zener diode Key Players in the Japan. Discovery has identified the top key players, startups & unicorns, fast-growings, news entrants in 2019, ranking from differnt perspectives, including patent filing intensity, academic research capability, news media heat. The company list is generated from various data types.
A Zener diode is a type of diode that allows current to flow not only from its anode to its cathode, but also in the reverse direction, when the voltage across its terminals exceeds the Zener voltage, a characteristic of the device. This effect is known as the Zener effect, after Clarence Zener, who first described the phenomenon.

Key Players

Fast-growings

Startups & Unicorns

New Entrants

Ranking Year:

2022

2021

2020

2019

2018

Region:

Global

China

Japan

Germany

United States

France

South Korea

Switzerland

United Kingdom

Singapore

Canada

Italy

Ranking:

Most Patent Filings

Highest Patent Value

Most Patent Citation

Most Research Publications

Most Literature Citation

Most News Heat

#
Company Name
Region
Tech Topics
Total
1
Mitsubishi Electric Engineering Co., Ltd.
Tokyo, Japan
patent citation: 1,839
2
Panasonic Holdings Corp.
Osaka, Japan
Semiconductor,Industrial engineering,Electronics,
...[+2]
patent citation: 1,758
3
Matsushita Electronics Corp.
Osaka, Japan
Electronics,Computer hardware,DVD player,
...[+2]
patent citation: 1,758
4
Hitachi Ltd.
Tokyo, Japan
Elevator,Electrical equipment,Electric motor,
...[+2]
patent citation: 1,603
5
Fuji Electronics Co., Ltd.
Tokyo, Japan
Semiconductor,Microcomputer,Electronic component,
...[+2]
patent citation: 1,406
6
Fuji Electric FA Components & SYstems Co., Ltd.
Tokyo, Japan
Semiconductor,Industrial engineering,Smart grid,
...[+2]
patent citation: 1,406
7
NEC Corp.
Tokyo, Japan
Virtualization,Big data,Network security,
...[+2]
patent citation: 1,049
8
TOSHIBA Corp.
Tokyo, Japan
Semiconductor,Computer hardware,Electronics,
...[+2]
patent citation: 1,033
9
Nihon Denso KK
Saitama, Japan
Manufacturing engineering,Mechanical engineering
patent citation: 753
10
Sony Group Corp.
Tokyo, Japan
Computer hardware,Software,Music,
...[+2]
patent citation: 738
11
Sharp Corp.
Osaka, Japan
Computer hardware,Electronics,Telecommunications,
...[+2]
patent citation: 697
12
Fujitsu Ltd.
Tokyo, Japan
Cloud computing,Enterprise software,Information technology management,
...[+2]
patent citation: 687
13
ROHM Co., Ltd.
Kyoto, Japan
Semiconductor,Electronic component,Power module,
...[+2]
patent citation: 592
14
Nissan Motor Co., Ltd.
Kanagawa, Japan
Truck,Public transport,Automotive engineering,
...[+2]
patent citation: 531
15
SANYO Electric Co., Ltd.
Osaka, Japan
Semiconductor,Computer hardware,Software,
...[+2]
patent citation: 470
16
Canon, Inc.
Tokyo, Japan
Computer hardware,Software,Computer vision,
...[+2]
patent citation: 386
17
Renesas Electronics Corp.
Tokyo, Japan
Semiconductor,Microcontroller,Electronics,
...[+2]
patent citation: 331
18
Ricoh Co., Ltd.
Tokyo, Japan
Digital media,Data visualization,Thermal paper,
...[+2]
patent citation: 318
19
DENSO Corp.
Aichi, Japan
Automotive engineering,Industrial robot,Programmable logic controller,
...[+2]
patent citation: 304
20
Toshiba Lighting & Technology Corp.
Kanagawa, Japan
LED lamp,Electronics,Smart glass,
...[+2]
patent citation: 275
21
Toyota Motor Corp.
Aichi, Japan
Sport utility vehicle,Mobile device,Public transport,
...[+2]
patent citation: 274
22
Murata Manufacturing Co. Ltd.
Kyoto, Japan
Semiconductor,Electronics,Electronic component,
...[+2]
patent citation: 261
23
OMRON Corp.
Kyoto, Japan
Automation,Electronics,Health care,
...[+2]
patent citation: 233
24
Toyoda Gosei Co., Ltd.
Aichi, Japan
Optoelectronics,Airbag,Synthetic rubber,
...[+2]
patent citation: 226
25
Koito Manufacturing Co., Ltd.
Tokyo, Japan
Headlamp,Automotive engineering,Fixture,
...[+2]
patent citation: 223
26
Koito
Tokyo, Japan
Electrical equipment,Automotive engineering
patent citation: 223
27
Seiko Epson Corp.
Nagano, Japan
Wearable technology,Projector,Electronics,
...[+2]
patent citation: 218
28
Semiconductor Energy Laboratory Co., Ltd.
Kanagawa, Japan
Semiconductor,Transistor,Semiconductor device,
...[+2]
patent citation: 208
29
Pioneer Corp.
Fukushima, Japan
Navigation system,Laserdisc player,Electronic product,
...[+2]
patent citation: 204
30
Shanken Electric Co. Ltd.
Japan
patent citation: 192
31
Hitachi Car Engineering Co., Ltd.
Japan
Automotive engineering
patent citation: 181
32
Dexerials Corp.
Tokyo, Japan
Electronic component,Polarizer,Electronics,
...[+2]
patent citation: 163
33
Fujitsu General Ltd.
Kanagawa, Japan
Air conditioning,Automation,Mechanical engineering,
...[+2]
patent citation: 162
34
Olympus Corp.
Tokyo, Japan
Microscope,Endoscopy,Software,
...[+2]
patent citation: 156
35
Oki Electric Industry Co., Ltd.
Tokyo, Japan
Telecommunications,Call centre,Software,
...[+2]
patent citation: 156
36
Yazaki Corp.
Tokyo, Japan
Electronic component,Automotive engineering,Cable harness,
...[+2]
patent citation: 156
37
Toshiba Tec Corp.
Tokyo, Japan
Computer hardware,Peripheral,Electronics,
...[+2]
patent citation: 129
38
Furukawa Electric Co., Ltd.
Tokyo, Japan
Optical fiber,Renewable energy,Optoelectronics,
...[+2]
patent citation: 118
39
Sankyo Co., Ltd.
Tokyo, Japan
Ball bearing,Manufacturing engineering,Glatiramer acetate,
...[+2]
patent citation: 116
40
Meidensha Corp.
Tokyo, Japan
Electrical equipment,Social infrastructure,Electronics,
...[+2]
patent citation: 115
41
Funai Electric Co., Ltd.
Osaka, Japan
Electronics,Computer hardware,Blu-ray disc,
...[+2]
patent citation: 115
42
Sumitomo Electric Industries Ltd.
Osaka, Japan
Electronics,Optical fiber,Optical fiber cable,
...[+2]
patent citation: 114
43
Sumitomo Electric
Osaka, Japan
Optical fiber,Electronics,Optical fiber cable
patent citation: 114
44
Nippon Telegraph & Telephone Corp.
Tokyo, Japan
Telecommunications,Cloud database,Data center,
...[+2]
patent citation: 112
45
NGK SPARK PLUG CO., LTD.
Aichi, Japan
Spark plug,Automotive engineering,Ceramic art,
...[+2]
patent citation: 110
46
Honda Motor Co., Ltd.
Tokyo, Japan
Automotive engineering,Manufacturing engineering,Sport utility vehicle,
...[+2]
patent citation: 105
47
Toyota Industries Corp.
Aichi, Japan
Textile,Software,Automotive engineering,
...[+2]
patent citation: 104
48
Yokogawa Electric Corp.
Tokyo, Japan
Automation,Systems design,Programmable logic controller,
...[+2]
patent citation: 103
49
Reliance Electric Ltd.
Kanagawa, Japan
Automation,Smart manufacturing,Electronics,
...[+1]
patent citation: 99
50
Fuji Electric Systems Co., Ltd.
Tokyo, Japan
Automation,Manufacturing engineering,Industrial engineering,
...[+2]
patent citation: 90
51
Subaru Corp.
Tokyo, Japan
Automotive engineering,Public transport,Aerospace,
...[+2]
patent citation: 87
52
TOKAI RIKA CO., LTD.
Aichi, Japan
Seat belt,Automotive engineering,Push start,
...[+2]
patent citation: 85
53
FANUC Corp.
Yamanashi, Japan
Robotics,Robot,Automation,
...[+2]
patent citation: 77
54
NEC Electronics Corp.
Kanagawa, Japan
Electronics,Computer hardware,Semiconductor,
...[+2]
patent citation: 75
55
Brother Industries, Ltd.
Aichi, Japan
Computer hardware,Electronics,Digital printing,
...[+2]
patent citation: 73
56
NITTAN Co., Ltd.
Osaka, Japan
Fire extinguisher,Construction engineering
patent citation: 71
57
Seiwa Electric Mfg. Co., Ltd
Kyoto, Japan
Information display,Industrial engineering,Electronics,
...[+2]
patent citation: 70
58
Aisin Corp.
Aichi, Japan
Brake,Automotive engineering,Navigation system,
...[+2]
patent citation: 67
59
Kokusan Denki Co., Ltd.
Shizuoka, Japan
Automotive engineering,Agricultural machinery,Magnet
patent citation: 65
60
Nippon Seiki Co., Ltd.
Niigata, Japan
Vehicle inspection,Automotive engineering,Sales management,
...[+2]
patent citation: 64
61
Nihon Seiki Co., Ltd.
Osaka, Japan
Compressed air,Automation,Manufacturing engineering,
...[+2]
patent citation: 64
62
Mitsumi Electric Co., Ltd.
Osaka, Japan
Semiconductor,Metal,Electronic component,
...[+2]
patent citation: 60
63
Yuasa Co., Ltd.
Hokkaido, Japan
Software development,Software,Accounting
patent citation: 60
64
Japan Storage Battery Co., Ltd.
Kyoto, Japan
Electronics
patent citation: 60
65
Okaya Electric Industries Co., Ltd.
Tokyo, Japan
Noise,Electronics,Bulb,
...[+2]
patent citation: 59
66
Novuton Technology Corp. Japan
Kyoto, Japan
Semiconductor,Laser diode,Integrated circuit,
...[+2]
patent citation: 59
67
Citizen Watch Co., Ltd.
Tokyo, Japan
Quartz,Semiconductor,Electronics,
...[+2]
patent citation: 58
68
Stanley Electric Co., Ltd.
Tokyo, Japan
Headlamp,Automotive engineering,Backlight,
...[+2]
patent citation: 58
69
AGC
Tokyo, Japan
Fluorine,Glazing,Chemical engineering,
...[+2]
patent citation: 56
70
Fujifilm Business Innovation Corp.
Chiba, Japan
Electronics,Inkjet printing,Vertical-cavity surface-emitting laser,
...[+2]
patent citation: 56
71
Asahi Fiber Glass Co., Ltd.
Tokyo, Japan
Glass wool,Thermal insulation,Fiber,
...[+2]
patent citation: 56
72
Komatsu Ltd.
Tokyo, Japan
Environmental engineering,Construction engineering,Heavy equipment,
...[+2]
patent citation: 55
73
Shindengen Electric Manufacturing Co. Ltd.
Tokyo, Japan
Semiconductor,Electronics,MOSFET,
...[+2]
patent citation: 50
74
Cosel Co., Ltd.
Toyama, Japan
Unit type,Electronics,Electricity,
...[+2]
patent citation: 50
75
Citizen Electronics Co., Ltd.
Yamanashi, Japan
Electronics,Solid-state lighting,Electrical equipment,
...[+2]
patent citation: 50
76
Asahi Industry Co., Ltd.
Tokyo, Japan
Automation,Mechanical engineering,Manufacturing engineering,
...[+1]
patent citation: 48
77
Sumitomo Wiring Systems Ltd.
Mie, Japan
High voltage,Electronics,Power steering,
...[+2]
patent citation: 47
78
Toyota Central R&D Labs, Inc.
Aichi, Japan
Semiconductor,Power semiconductor device,System on a chip,
...[+2]
patent citation: 47
79
Hitachi Kokusai Electric, Inc.
Saga, Japan
Semiconductor,Electronics,Thin film,
...[+2]
patent citation: 46
80
Nagano Japan Radio Co., Ltd.
Nagano, Japan
Electronic component,Telecommunications,Scanner,
...[+2]
patent citation: 44
81
Sanken Electric Co., Ltd.
Tokyo, Japan
Semiconductor,Power semiconductor device,Diode,
...[+2]
patent citation: 42
82
FUJIFILM Corp.
Tokyo, Japan
Photography,Medical imaging,Computer hardware,
...[+2]
patent citation: 40
83
Fujitsu Access Ltd.
Kanagawa, Japan
Telecommunications,Systems design,Software
patent citation: 40
84
Shibaura Mechatronics Corp.
Kanagawa, Japan
Semiconductor,Robotic lawn mower,Mechatronics,
...[+2]
patent citation: 39
85
Diamond Electric Mfg. Co., Ltd.
Tottori, Japan
Spark plug,Electronics,Electronic component,
...[+2]
patent citation: 38
86
Autonetworks Technologies Ltd.
Japan
patent citation: 38
87
Elbex Video Ltd.
Japan
patent citation: 38
88
Azbil Corp.
Tokyo, Japan
Building automation,Software,Electronics,
...[+2]
patent citation: 37
89
Rinnai Corp.
Aichi, Japan
Solar water heating,Electronics,Thermal energy,
...[+2]
patent citation: 37
90
Victor Company of Japan Ltd.
Kanagawa, Japan
Electronics,Software,High-definition television,
...[+2]
patent citation: 37
91
Hitachi Cable Ltd.
Tokyo, Japan
Electronics,Metal,Optical fiber,
...[+2]
patent citation: 37
92
NEC Home Electronics Ltd.
Tokyo, Japan
Consumables,Electronics
patent citation: 37
93
Mita Industrial Co., Ltd.
Osaka, Japan
Computer hardware,Electronics,Monochrome
patent citation: 36
94
Aiphone Co., Ltd.
Aichi, Japan
Intercom,Telecommunications,Residence,
...[+2]
patent citation: 35
95
Diesel Kiki Co. Ltd.
Japan
Automotive engineering
patent citation: 34
96
SUMCO Corp.
Tokyo, Japan
Semiconductor,Wafer,Silicon,
...[+2]
patent citation: 33
97
Energy Support Corp.
Aichi, Japan
Electrical equipment,Electronics,Circuit breaker,
...[+2]
patent citation: 33
98
Nikon Corp.
Tokyo, Japan
Microscope,Photography,Motion capture,
...[+2]
patent citation: 31
99
Alps Alpine Co., Ltd.
Tokyo, Japan
Electronic component,Electronics,Power transmission,
...[+2]
patent citation: 31
100
Yamaha Motor Co., Ltd.
Shizuoka, Japan
Robotics,Industrial robot,Automotive engineering,
...[+2]
patent citation: 30

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