Top 50 Key Players companies in Lithium-ion battery by Most Patent Citation in the Japan in 2021 – Discovery

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1	SANYO Electric Co., Ltd.	Osaka, Japan	Semiconductor,Computer hardware,Software, ...[+2]	patent citation: 9,120
2	Toyota Motor Corp.	Aichi, Japan	Sport utility vehicle,Mobile device,Public transport, ...[+2]	patent citation: 9,099
3	Matsushita Electronics Corp.	Osaka, Japan	Electronics,Computer hardware,DVD player, ...[+2]	patent citation: 5,977
4	Hitachi Ltd.	Tokyo, Japan	Elevator,Electrical equipment,Electric motor, ...[+2]	patent citation: 4,396
5	Nissan Motor Co., Ltd.	Kanagawa, Japan	Truck,Public transport,Automotive engineering, ...[+2]	patent citation: 3,729
6	TOSHIBA Corp.	Tokyo, Japan	Semiconductor,Computer hardware,Electronics, ...[+2]	patent citation: 3,240
7	Yuasa Co., Ltd.	Hokkaido, Japan	Software development,Software,Accounting	patent citation: 3,203
8	Japan Storage Battery Co., Ltd.	Kyoto, Japan	Electronics	patent citation: 3,203
9	Sony Group Corp.	Tokyo, Japan	Computer hardware,Software,Music, ...[+2]	patent citation: 3,186
10	Koki Holdings Co. Ltd.	Aichi, Japan	Power tool,Metalworking,Centrifuge, ...[+2]	patent citation: 3,068
11	Semiconductor Energy Laboratory Co., Ltd.	Kanagawa, Japan	Semiconductor,Transistor,Semiconductor device, ...[+2]	patent citation: 2,715
12	UBE Corp.	Tokyo, Japan	Synthetic rubber,Chemical engineering,Coal mining, ...[+2]	patent citation: 2,610
13	Canon, Inc.	Tokyo, Japan	Computer hardware,Software,Computer vision, ...[+2]	patent citation: 2,032
14	Nihon Denso KK	Saitama, Japan	Manufacturing engineering,Mechanical engineering	patent citation: 1,577
15	Toyota Central R&D Labs, Inc.	Aichi, Japan	Semiconductor,Power semiconductor device,System on a chip, ...[+2]	patent citation: 1,292
16	Showa Denko Materials Co., Ltd.	Tokyo, Japan	Semiconductor,Carbon product,Efficient energy use, ...[+2]	patent citation: 1,262
17	Showa Denko K.K.	Chiba, Japan	Graphite,Materials science,Nanomaterials, ...[+2]	patent citation: 1,198
18	Mitsui Chemistry Joint-stock Co.	Japan		patent citation: 1,164
19	Sharp Corp.	Osaka, Japan	Computer hardware,Electronics,Telecommunications, ...[+2]	patent citation: 1,162
20	Teijin Ltd.	Tokyo, Japan	Synthetic rubber,Chemical engineering,Polycarbonate, ...[+2]	patent citation: 1,104
21	Mitsubishi Electric Engineering Co., Ltd.	Tokyo, Japan		patent citation: 991
22	Vehicle Energy Japan, Inc.	Osaka, Japan	Lithium-ion battery,Automotive engineering,Electric-vehicle battery, ...[+2]	patent citation: 971
23	Sumitomo Electric Industries Ltd.	Osaka, Japan	Electronics,Optical fiber,Optical fiber cable, ...[+2]	patent citation: 953
24	Sumitomo Electric	Osaka, Japan	Optical fiber,Electronics,Optical fiber cable	patent citation: 953
25	PMC KK	Tokyo, Japan	Web design	patent citation: 853
26	Honda Motor Co., Ltd.	Tokyo, Japan	Automotive engineering,Manufacturing engineering,Sport utility vehicle, ...[+2]	patent citation: 778
27	Toppan, Inc.	Tokyo, Japan	Publishing,Semiconductor,Electronics, ...[+2]	patent citation: 773
28	TDK Corp.	Tokyo, Japan	Electronic component,Ceramic capacitor,Electronics, ...[+2]	patent citation: 704
29	Osaka Gas Co., Ltd.	Osaka, Japan	Natural gas,Activated carbon,Petroleum industry, ...[+2]	patent citation: 687
30	DAIKIN INDUSTRIES Ltd.	Osaka, Japan	Air conditioning,Refrigeration,Mechanical engineering, ...[+2]	patent citation: 671
31	Seiko Epson Corp.	Nagano, Japan	Wearable technology,Projector,Electronics, ...[+2]	patent citation: 662
32	Makita Corp.	Aichi, Japan	Computer hardware,Information technology management,Metalworking, ...[+2]	patent citation: 661
33	Makita	Fukuoka, Japan	Industrial engineering	patent citation: 661
34	Ricoh Co., Ltd.	Tokyo, Japan	Digital media,Data visualization,Thermal paper, ...[+2]	patent citation: 615
35	Fuji Electronics Co., Ltd.	Tokyo, Japan	Semiconductor,Microcomputer,Electronic component, ...[+2]	patent citation: 587
36	Fuji Electric FA Components & SYstems Co., Ltd.	Tokyo, Japan	Semiconductor,Industrial engineering,Smart grid, ...[+2]	patent citation: 587
37	Mitsubishi Kogyo KK	Japan		patent citation: 575
38	Fujitsu Ltd.	Tokyo, Japan	Cloud computing,Enterprise software,Information technology management, ...[+2]	patent citation: 510
39	Mitsumi Electric Co., Ltd.	Osaka, Japan	Semiconductor,Metal,Electronic component, ...[+2]	patent citation: 507
40	FUJIFILM Corp.	Tokyo, Japan	Photography,Medical imaging,Computer hardware, ...[+2]	patent citation: 494
41	TDK-Lambda Corp.	Tokyo, Japan	Peripheral,Semiconductor,Electricity, ...[+2]	patent citation: 486
42	Kyocera Corp.	Kyoto, Japan	Semiconductor,Electronics,Telecommunications, ...[+2]	patent citation: 465
43	Evonik Degussa Japan Co., Ltd.	Tokyo, Japan		patent citation: 462
44	Nippon Zeon Co., Ltd.	Tokyo, Japan	Chemical engineering,Solid-state battery,Supercapacitor, ...[+1]	patent citation: 462
45	Sanyo Chemical Industries, Ltd.	Kyoto, Japan	Chemical engineering,Polyurethane,Superabsorbent polymer, ...[+2]	patent citation: 449
46	Advanced Industrial Science & Technology	Tokyo, Japan	Graphene,Association (object-oriented programming)	patent citation: 444
47	Toray Industries, Inc.	Tokyo, Japan	Fiber,Textile,Textile (markup language), ...[+2]	patent citation: 441
48	Hitachi Metals, Ltd.	Chiba, Japan	Metal,Magnet,Telecommunications, ...[+2]	patent citation: 409
49	Toho Titanium Co., Ltd.	Kanagawa, Japan	Titanium,Industrial engineering,Metal, ...[+2]	patent citation: 403
50	Mitsubishi Materials Corp.	Tokyo, Japan	Cement,Alloy,Polycrystalline silicon, ...[+2]	patent citation: 388