Top 100 Key Players companies in Ductility by Most Patent Citation in the Japan in 2019 – Discovery

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The Ductility top 100 is Discovery PatSnap’ annual ranking of the top 100 Most Patent Citation Ductility 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.

Ductility is a measure of a material's ability to undergo significant plastic deformation before rupture, which may be expressed as percent elongation or percent area reduction from a tensile test. According to Shigley's Mechanical Engineering Design (10th Ed.) significant denotes about 5.0 percent elongation (Section 5.3, p. 233). See also Eq. 2–12, p. 50 for definitions of percent elongation and percent area reduction. Ductility is often characterized by a material's ability to be stretched into a wire.

1	NIPPON STEEL Stainless Steel Corp.	Tokyo, Japan	Mill,Metal,Mining engineering, ...[+1]	patent citation: 5,628
2	JFE Holdings, Inc.	Tokyo, Japan	Materials science,Product design,Carbon steel, ...[+2]	patent citation: 2,825
3	JFE Steel Corp.	Tokyo, Japan	Irone,Mining engineering,Natural resource management, ...[+2]	patent citation: 2,825
4	Kobe Steel, Ltd.	Hyogo, Japan	Welding,Electronics,Mining engineering, ...[+2]	patent citation: 2,647
5	Sumitomo Metal Industries Ltd.	Osaka, Japan	Metal,Semiconductor,Casting, ...[+2]	patent citation: 2,042
6	Kawasaki Steel Corp.	Japan		patent citation: 1,151
7	Hitachi Ltd.	Tokyo, Japan	Elevator,Electrical equipment,Electric motor, ...[+2]	patent citation: 845
8	Toyota Motor Corp.	Aichi, Japan	Sport utility vehicle,Mobile device,Public transport, ...[+2]	patent citation: 739
9	NKK Corp.	Tokyo, Japan	Natural resource management,Mining engineering	patent citation: 627
10	TOSHIBA Corp.	Tokyo, Japan	Semiconductor,Computer hardware,Electronics, ...[+2]	patent citation: 613
11	Nippon Steel Nisshin Co., Ltd.	Tokyo, Japan	Construction engineering	patent citation: 598
12	Toray Industries, Inc.	Tokyo, Japan	Fiber,Textile,Textile (markup language), ...[+2]	patent citation: 560
13	YKK Corp.	Tokyo, Japan	Fastener,Metal,Chaff, ...[+2]	patent citation: 491
14	Mitsubishi Kogyo KK	Japan		patent citation: 485
15	Nihon Koshuha Co. Ltd.	Japan		patent citation: 411
16	Honda Motor Co., Ltd.	Tokyo, Japan	Automotive engineering,Manufacturing engineering,Sport utility vehicle, ...[+2]	patent citation: 408
17	Hitachi Metals, Ltd.	Chiba, Japan	Metal,Magnet,Telecommunications, ...[+2]	patent citation: 397
18	Daido Steel Co., Ltd.	Aichi, Japan	Magnet,Power transmission,Ferroalloy, ...[+2]	patent citation: 396
19	Furukawa Electric Co., Ltd.	Tokyo, Japan	Optical fiber,Renewable energy,Optoelectronics, ...[+2]	patent citation: 346
20	Mitsubishi Materials Corp.	Tokyo, Japan	Cement,Alloy,Polycrystalline silicon, ...[+2]	patent citation: 310
21	Mitsubishi Materials Techno Corp.	Japan		patent citation: 310
22	Sumitomo Electric Industries Ltd.	Osaka, Japan	Electronics,Optical fiber,Optical fiber cable, ...[+2]	patent citation: 304
23	Sumitomo Electric	Osaka, Japan	Optical fiber,Electronics,Optical fiber cable	patent citation: 304
24	Nissan Motor Co., Ltd.	Kanagawa, Japan	Truck,Public transport,Automotive engineering, ...[+2]	patent citation: 273
25	JX Nippon Mining & Metals Corp.	Tokyo, Japan	Non-ferrous metal,Cathode material,Mining engineering, ...[+2]	patent citation: 260
26	Asahi Kasei Corp.	Tokyo, Japan	Chemical engineering,Petrochemical,Fertilizer, ...[+2]	patent citation: 258
27	Kao Corp.	Tokyo, Japan	Cosmetics,Health care,Hair conditioner, ...[+2]	patent citation: 246
28	Panasonic Holdings Corp.	Osaka, Japan	Semiconductor,Industrial engineering,Electronics, ...[+2]	patent citation: 245
29	Matsushita Electronics Corp.	Osaka, Japan	Electronics,Computer hardware,DVD player, ...[+2]	patent citation: 245
30	Bridgestone Corp.	Tokyo, Japan	Automotive engineering,sports equipment,Natural rubber, ...[+2]	patent citation: 229
31	YAMAX Corp.	Kumamoto, Japan	Pedometer,Curtain wall,Construction engineering, ...[+2]	patent citation: 223
32	Toyoda Gosei Co., Ltd.	Aichi, Japan	Optoelectronics,Airbag,Synthetic rubber, ...[+2]	patent citation: 198
33	Mitsui Chemicals, Inc.	Tokyo, Japan	Petrochemical,Chemical engineering,Polypropylene, ...[+2]	patent citation: 196
34	National Institute for Materials Science IAI	Ibaraki, Japan	Metal	patent citation: 191
35	Kubota Corp.	Osaka, Japan	Tractor,Manufacturing engineering,Combine harvester, ...[+2]	patent citation: 183
36	Shin-Etsu Chemical Co., Ltd.	Tokyo, Japan	Silicone,Semiconductor,Chemical engineering, ...[+2]	patent citation: 181
37	The Japan Steel Works Ltd.	Tokyo, Japan	Wind power,Ferroalloy,Energy products, ...[+2]	patent citation: 171
38	JSW	Tokyo, Japan	Energy products,Petroleum industry,Precious metal, ...[+2]	patent citation: 171
39	Idemitsu Kosan Co., Ltd.	Tokyo, Japan	Petrochemical,Lubricant,Petroleum, ...[+2]	patent citation: 161
40	Nitto Denko Corp.	Osaka, Japan	Semiconductor,Product design,Adhesive, ...[+2]	patent citation: 159
41	Sumitomo Precision Products Co., Ltd.	Hyogo, Japan	Landing gear,Electronic component,Semiconductor, ...[+2]	patent citation: 158
42	UACJ Corp.	Tokyo, Japan	Metal,Aluminium alloy,Alloy, ...[+2]	patent citation: 154
43	Toyota Central R&D Labs, Inc.	Aichi, Japan	Semiconductor,Power semiconductor device,System on a chip, ...[+2]	patent citation: 146
44	TOTO Ltd.	Fukuoka, Japan	Bathtub,Cistern,Sink (computing), ...[+2]	patent citation: 143
45	Tosoh Corp.	Tokyo, Japan	Petrochemical,Chemical engineering,Immunoprotein, ...[+2]	patent citation: 137
46	Aisin Takaoka Co., Ltd.	Aichi, Japan	Metal,Casting,Machining	patent citation: 131
47	Osaka Prefecture Veterinary Medical Association	Osaka, Japan		patent citation: 129
48	Showa Denko K.K.	Chiba, Japan	Graphite,Materials science,Nanomaterials, ...[+2]	patent citation: 122
49	Toho Rayon Co. Ltd.	Japan		patent citation: 119
50	Neturen Takuto Co., Ltd.	Shizuoka, Japan		patent citation: 119
51	Toyo Ink SC Holdings Co., Ltd.	Hokkaido, Japan	Pigment,Manufacturing engineering,Coating, ...[+2]	patent citation: 110
52	Mitsubishi Electric Engineering Co., Ltd.	Tokyo, Japan		patent citation: 110
53	Endo Manufacturing Co., Ltd.	Niigata, Japan	Metal,Sleeve,Forging, ...[+1]	patent citation: 107
54	Sekisui Chemical Co., Ltd.	Osaka, Japan	Synthetic rubber,Industrial engineering,Polyvinyl chloride, ...[+2]	patent citation: 106
55	FUJIFILM Corp.	Tokyo, Japan	Photography,Medical imaging,Computer hardware, ...[+2]	patent citation: 105
56	Mitsubishi Power Ltd.	Kanagawa, Japan	Turbine,Control system,Renewable energy, ...[+2]	patent citation: 102
57	NEC Corp.	Tokyo, Japan	Virtualization,Big data,Network security, ...[+2]	patent citation: 99
58	Fuji Electronics Co., Ltd.	Tokyo, Japan	Semiconductor,Microcomputer,Electronic component, ...[+2]	patent citation: 99
59	Fuji Electric FA Components & SYstems Co., Ltd.	Tokyo, Japan	Semiconductor,Industrial engineering,Smart grid, ...[+2]	patent citation: 99
60	Unitika Ltd.	Osaka, Japan	Fiber,Textile (markup language),Polymer, ...[+2]	patent citation: 98
61	Dai Nippon Printing Co., Ltd.	Tokyo, Japan	Electronics,Publishing,Publication, ...[+2]	patent citation: 96
62	Dainippon Printing Co. Ltd.	Japan		patent citation: 96
63	Nakayama Steel Works, Ltd.	Osaka, Japan	Reef,Industrial engineering,Ferroalloy	patent citation: 94
64	The Nippon Synthetic Chemical Industry Co., Ltd.	Osaka, Japan	Chemical engineering,Adhesive,Acetic acid, ...[+2]	patent citation: 89
65	Chuetsu Metal Works Co. Ltd.	Okinawa, Japan	Alloy,Metal,Casting	patent citation: 88
66	Mitsuboshi Belting Ltd.	Tokyo, Japan	Belting,Automotive engineering,Conveyor belt, ...[+2]	patent citation: 86
67	Yazaki Corp.	Tokyo, Japan	Electronic component,Automotive engineering,Cable harness, ...[+2]	patent citation: 85
68	Terumo Corp.	Tokyo, Japan	Health care,Blood management,Syringe, ...[+2]	patent citation: 84
69	DIC Corp.	Tokyo, Japan	Pigment,Chemical engineering,Synthetic resin, ...[+2]	patent citation: 84
70	DIC Corporation		Pigment,Polymer,Epoxy, ...[+2]	patent citation: 84
71	UBE Corp.	Tokyo, Japan	Synthetic rubber,Chemical engineering,Coal mining, ...[+2]	patent citation: 83
72	Mazda Motor Corp.	Kanagawa, Japan	Automotive engineering,Reciprocating engine,Manual transmission, ...[+2]	patent citation: 83
73	Kuraray Co., Ltd.	Tokyo, Japan	Synthetic rubber,Isoprene,Vinyl acetate, ...[+2]	patent citation: 81
74	Fukuda Metal Foil & Powder Co., Ltd.	Kyoto, Japan	Precious metal,Mining engineering,Metallurgy, ...[+2]	patent citation: 81
75	Sanyo Special Steel Co., Ltd.	Hyogo, Japan	Forging,Mining engineering,Natural resource management, ...[+2]	patent citation: 79
76	Showa Aluminum Corp.	Tokyo, Japan	Mining engineering,Precious metal,Dross, ...[+2]	patent citation: 76
77	IHI Corp.	Tokyo, Japan	Turbocharger,Manufacturing engineering,Turbine, ...[+2]	patent citation: 75
78	TOKIN Corp	Miyagi, Japan	Capacitor,Electronic component,Electromagnetic compatibility, ...[+2]	patent citation: 74
79	Mitsubishi Hitachi Power Systems	Kanagawa, Japan	Control system	patent citation: 72
80	LINTEC Corp.	Tokyo, Japan	Adhesive materials,Industrial engineering,Pressure sensitive, ...[+2]	patent citation: 71
81	MA Aluminum Corp.	Tokyo, Japan	Mill,Metal,Precious metal, ...[+2]	patent citation: 71
82	Showa Denko Materials Co., Ltd.	Tokyo, Japan	Semiconductor,Carbon product,Efficient energy use, ...[+2]	patent citation: 70
83	Toyobo Co., Ltd.	Osaka, Japan	Chemical engineering,Synthetic rubber,Membrane, ...[+2]	patent citation: 68
84	The Yokohama Rubber Co., Ltd.	Chiba, Japan	Automotive engineering,Radial tire,Tire manufacturing, ...[+2]	patent citation: 67
85	JFE Bars & Shapes Corp.	Tokyo, Japan	Mining engineering,Natural resource management,Metal	patent citation: 67
86	Toyo Aluminium KK	Osaka, Japan	Metal,Solar cell,Aluminium, ...[+2]	patent citation: 66
87	Nippon Light Metal Co., Ltd.	Tokyo, Japan	Metal,Precious metal,Mining engineering, ...[+2]	patent citation: 65
88	Mitsubishi Plastics, Inc.	Tokyo, Japan	Bottle,Chemical engineering,Plastic film, ...[+2]	patent citation: 64
89	FANUC Corp.	Yamanashi, Japan	Robotics,Robot,Automation, ...[+2]	patent citation: 63
90	Polyplastics Co., Ltd.	Tokyo, Japan	Engineering plastic,Plastics engineering,Polymer, ...[+2]	patent citation: 62
91	Topy Industries, Ltd.	Tokyo, Japan	Alloy wheel,Robot,Automotive engineering, ...[+2]	patent citation: 61
92	Kaneka Corp.	Tokyo, Japan	Synthetic rubber,Chemical engineering,Polyvinyl chloride, ...[+2]	patent citation: 60
93	Daizo Corp.	Osaka, Japan	Sales management,Construction engineering	patent citation: 60
94	SANYO Electric Co., Ltd.	Osaka, Japan	Semiconductor,Computer hardware,Software, ...[+2]	patent citation: 59
95	Sharp Corp.	Osaka, Japan	Computer hardware,Electronics,Telecommunications, ...[+2]	patent citation: 58
96	NHK Spring Co., Ltd.	Kanagawa, Japan	Leaf spring,Coil spring,Head restraint, ...[+2]	patent citation: 58
97	Sumitomo Rubber Industries, Ltd.	Kyoto, Japan	Rubber material,Plastics engineering,Radial tire, ...[+2]	patent citation: 57
98	NGK Insulators, Ltd.	Aichi, Japan	Beryllium copper,Industrial engineering,Pottery, ...[+2]	patent citation: 56
99	Hitachi Powdered Metals Co., Ltd.	Chiba, Japan	Mining engineering,Natural resource management,Metallurgy, ...[+2]	patent citation: 55
100	Toyo Kohan Co., Ltd.	Tokyo, Japan	Aluminum substrate,Ferroalloy,Mining engineering, ...[+1]	patent citation: 54