Top 100 Key Players companies in NOx by Most Patent Filings in the world in 2021 – Discovery

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The NOx top 100 is Discovery PatSnap’ annual ranking of the top 100 Most Patent Filings NOx Key Players in the world. Discovery has identified the top key players, startups & unicorns, fast-growings, news entrants in 2021, ranking from differnt perspectives, including patent filing intensity, academic research capability, news media heat. The company list is generated from various data types.

1	Toyota Motor Corp.	Aichi, Japan	Sport utility vehicle,Mobile device,Public transport, ...[+2]	Patent: 2,689
2	Mitsubishi Kogyo KK	Japan		Patent: 903
3	Nissan Motor Co., Ltd.	Kanagawa, Japan	Truck,Public transport,Automotive engineering, ...[+2]	Patent: 694
4	Hitachi Ltd.	Tokyo, Japan	Elevator,Electrical equipment,Electric motor, ...[+2]	Patent: 666
5	Isuzu Motors Ltd.	Tokyo, Japan	Truck,Public transport,Diesel engine, ...[+2]	Patent: 599
6	Johnson Matthey Plc	United Kingdom	Diesel particulate filter,Chemical engineering,Cisco Catalyst, ...[+2]	Patent: 573
7	Mazda Motor Corp.	Kanagawa, Japan	Automotive engineering,Reciprocating engine,Manual transmission, ...[+2]	Patent: 490
8	BASF Corp.	New Jersey, United States	Nutrition,Chemical engineering,Aerospace, ...[+2]	Patent: 429
9	Hino Motors, Ltd.	Tokyo, Japan	Truck,Public transport,Gasoline, ...[+2]	Patent: 409
10	Honda Motor Co., Ltd.	Tokyo, Japan	Automotive engineering,Manufacturing engineering,Sport utility vehicle, ...[+2]	Patent: 387
11	Hyundai Motor Co., Ltd.	South Korea	Public transport,Automotive engineering,Truck, ...[+2]	Patent: 327
12	Mitsubishi Motors Corp.	Tokyo, Japan	Sport utility vehicle,Automotive engineering,Electric vehicle, ...[+2]	Patent: 318
13	Ford Motor Co. A/S	Denmark		Patent: 313
14	G.M. Srl	Vicenza, Italy	Chemical engineering	Patent: 305
15	Nihon Denso KK	Saitama, Japan	Manufacturing engineering,Mechanical engineering	Patent: 284
16	Panasonic Holdings Corp.	Osaka, Japan	Semiconductor,Industrial engineering,Electronics, ...[+2]	Patent: 270
17	Matsushita Electronics Corp.	Osaka, Japan	Electronics,Computer hardware,DVD player, ...[+2]	Patent: 270
18	Robert Bosch GmbH	Baden-Württemberg, Germany	Automotive engineering,Mechanical engineering,Electronics, ...[+2]	Patent: 261
19	Robert Bosch Corp.	Michigan, United States	Shopping mall,Truck	Patent: 261
20	General Electric Co.	Massachusetts, United States	Energy management,Turbine,Electronics, ...[+2]	Patent: 240
21	Osaka Gas Co., Ltd.	Osaka, Japan	Natural gas,Activated carbon,Petroleum industry, ...[+2]	Patent: 238
22	Tokyo Gas Co., Ltd.	Tokyo, Japan	Natural gas,Hydrogen chloride,Petroleum industry, ...[+2]	Patent: 206
23	Hitachi Zosen Corp.	Osaka, Japan	Mechanical engineering,Waste-to-energy,Environmental protection, ...[+2]	Patent: 198
24	Mitsubishi Power Ltd.	Kanagawa, Japan	Turbine,Control system,Renewable energy, ...[+2]	Patent: 184
25	TOSHIBA Corp.	Tokyo, Japan	Semiconductor,Computer hardware,Electronics, ...[+2]	Patent: 180
26	Kawasaki Heavy Industries Ltd.	Kyoto, Japan	Turbine,Mechanical engineering,Manufacturing engineering, ...[+2]	Patent: 179
27	BASF SE	Rheinland-Pfalz, Germany	Agriculture,Petrochemical,Chemical engineering, ...[+2]	Patent: 178
28	Toyota Central R&D Labs, Inc.	Aichi, Japan	Semiconductor,Power semiconductor device,System on a chip, ...[+2]	Patent: 174
29	NGK Insulators, Ltd.	Aichi, Japan	Beryllium copper,Industrial engineering,Pottery, ...[+2]	Patent: 171
30	UD Trucks Corp.	Saitama, Japan	Truck,Automotive engineering	Patent: 159
31	Ebara Corp.	Tokyo, Japan	Vacuum pump,Manufacturing engineering,Turbine, ...[+2]	Patent: 155
32	NIPPON STEEL Stainless Steel Corp.	Tokyo, Japan	Mill,Metal,Mining engineering, ...[+1]	Patent: 152
33	Umicore	Brussels Hoofdstedelijk Gewest, Belgium	Zinc,Precious metal,Catalysis, ...[+2]	Patent: 146
34	Mitsubishi Fuso Truck & Bus Corp.	Kanagawa, Japan	Truck,Automotive engineering,Chassis	Patent: 145
35	IHI Power Systems Co., Ltd.	Tokyo, Japan	Turbine,Gas engine,Manufacturing engineering, ...[+2]	Patent: 145
36	Praxair S.T. Technology, Inc.	Connecticut, United States	Information technology consulting,Systems design,Coating, ...[+2]	Patent: 144
37	Volkswagen Group of America, Inc.	Michigan, United States	Truck,Automotive engineering,Automotive industry	Patent: 143
38	Volkswagenwerk AG	Germany		Patent: 143
39	N.E. Chemcat Corp.	Tokyo, Japan	Cisco Catalyst,Chemical engineering,Automotive catalyst, ...[+2]	Patent: 141
40	Exxon Research & Engineering Co.	United States		Patent: 141
41	Scania CV AB	Stockholm, Sweden	Truck,Automotive engineering,Chassis	Patent: 139
42	Peugeot Citroën Automobiles SA	Île-de-France, France	Automotive engineering	Patent: 131
43	DENSO Corp.	Aichi, Japan	Automotive engineering,Industrial robot,Programmable logic controller, ...[+2]	Patent: 125
44	China Petroleum & Chemical Corp.	Beijing Shi, China	Petrochemical,Petroleum,Enterprise software, ...[+2]	Patent: 110
45	Caterpillar, Inc.	Illinois, United States	Turbine,Construction engineering,Mechanical engineering, ...[+2]	Patent: 109
46	Yanmar Co., Ltd.	Osaka, Japan	Diesel engine,Electronics,Tractor, ...[+2]	Patent: 109
47	Mitsubishi Electric Engineering Co., Ltd.	Tokyo, Japan		Patent: 104
48	W.R. Grace & Co.	United States	Coating,Computer hardware,Petrochemical, ...[+2]	Patent: 102
49	Kia Corp.	South Korea	Customer expectation,Automotive engineering,Public transport, ...[+2]	Patent: 98
50	NGK SPARK PLUG CO., LTD.	Aichi, Japan	Spark plug,Automotive engineering,Ceramic art, ...[+2]	Patent: 98
51	Miura Co., Ltd.	Tokyo, Japan	Boiler (power generation),Water-tube boiler,Refrigeration, ...[+2]	Patent: 98
52	John Zink Co. LLC	Oklahoma, United States	Control equipment,Hydronics,Combustion system, ...[+2]	Patent: 94
53	BASF Catalysts LLC	New Jersey, United States	Polyolefin,Mica,Metal, ...[+2]	Patent: 92
54	NKK Corp.	Tokyo, Japan	Natural resource management,Mining engineering	Patent: 91
55	Kobe Steel, Ltd.	Hyogo, Japan	Welding,Electronics,Mining engineering, ...[+2]	Patent: 90
56	thyssenkrupp Industrial Solutions AG	Wisconsin, United States	Industrial engineering,Mechanical engineering,Value added, ...[+2]	Patent: 90
57	Ricoh Co., Ltd.	Tokyo, Japan	Digital media,Data visualization,Thermal paper, ...[+2]	Patent: 85
58	Haldor Topsøe A/S	Hovedstaden, Denmark	Biology,Agriculture,Renewable energy, ...[+2]	Patent: 84
59	Mitsubishi Hitachi Power Systems	Kanagawa, Japan	Control system	Patent: 83
60	International Engine Intellectual Property Co. LLC	Illinois, United States	Intellectual property,Automotive engineering	Patent: 82
61	Siemens AG	Bayern, Germany	Power transmission,Electronics,Turbine, ...[+2]	Patent: 81
62	Siemens SA	Madrid, Spain	Scientific Control,Telecommunications,Turbine, ...[+1]	Patent: 81
63	Air Products & Chemicals, Inc.	Pennsylvania, United States	Industrial gas,Chemical engineering,Helium, ...[+2]	Patent: 80
64	Nippon Shokubai Co., Ltd.	Tokyo, Japan	Polymer,Acrylic acid,Chemical engineering, ...[+2]	Patent: 80
65	Petroleum Energy Center	Tokyo, Japan	Hydrogen,Petroleum industry	Patent: 80
66	The Babcock & Wilcox Co.	Ohio, United States	Electronics,Flue-gas desulfurization,Control equipment, ...[+2]	Patent: 78
67	IHI Corp.	Tokyo, Japan	Turbocharger,Manufacturing engineering,Turbine, ...[+2]	Patent: 77
68	Exxon Mobil Corp.	Texas, United States	Petroleum,Petroleum industry,Chemical engineering, ...[+2]	Patent: 76
69	Mobil Corp.	Texas, United States	Petroleum industry,Petroleum,Natural gas	Patent: 76
70	Xi'an Thermal Power Research Institute Co., Ltd.	Shaanxi Sheng, China		Patent: 70
71	Rhodia Operations SASU	Île-de-France, France	Chemical engineering	Patent: 70
72	Sakai Chemical Industry Co., Ltd.	Osaka, Japan	Chemical engineering,Zinc,Titanium dioxide, ...[+2]	Patent: 69
73	Weichai Power Co., Ltd.	Shandong Sheng, China	Diesel engine,Spark plug,Gasoline, ...[+2]	Patent: 68
74	Noritsu Koki Co., Ltd.	Chiba, Japan	Hydroponics,Drug discovery,Ultracentrifuge, ...[+2]	Patent: 68
75	Mercedes-Benz Group AG	Baden-Württemberg, Germany	Automotive engineering,Electric vehicle,Hybrid vehicle, ...[+2]	Patent: 67
76	Mitsui E&S Holdings Co., Ltd.	Tokyo, Japan	Public transport,Hydrogen compressor,Reciprocating compressor, ...[+2]	Patent: 66
77	Daimier AG	Germany	Truck,Chassis	Patent: 66
78	Renault SA	Île-de-France, France	Sport utility vehicle,Automotive engineering,Venture capital, ...[+2]	Patent: 65
79	Kubota Corp.	Osaka, Japan	Tractor,Manufacturing engineering,Combine harvester, ...[+2]	Patent: 65
80	Renault SAS	Île-de-France, France	Automotive engineering,Guanosine diphosphate	Patent: 65
81	Corning, Inc.	New York, United States	Telecommunications,Computer hardware,Electronics, ...[+2]	Patent: 64
82	Cataler Corp.	Shizuoka, Japan	Cisco Catalyst,Automotive engineering	Patent: 64
83	Komatsu Ltd.	Tokyo, Japan	Environmental engineering,Construction engineering,Heavy equipment, ...[+2]	Patent: 63
84	YanTai LongYuan Power Technology Co., Ltd.	Shandong Sheng, China	Heat exchanger,Electronics,NOx, ...[+2]	Patent: 61
85	Uhde	Germany	Chemical engineering	Patent: 61
86	TAKUMA CO., LTD.	Hyogo, Japan	Manufacturing engineering,Agricultural waste,Boiler (power generation), ...[+2]	Patent: 60
87	SANYO Electric Co., Ltd.	Osaka, Japan	Semiconductor,Computer hardware,Software, ...[+2]	Patent: 60
88	Fuel Tech, Inc.	Illinois, United States	Air pollution,Chemical energy,Petroleum industry, ...[+2]	Patent: 60
89	Fuel-Tech NV	Netherlands	Construction engineering,Process optimization,Air pollution, ...[+2]	Patent: 60
90	POSCO	South Korea	Materials science,Mining engineering,Metal, ...[+2]	Patent: 59
91	Huaneng Clean Energy Research Institute	Beijing Shi, China	Petroleum coke	Patent: 59
92	Sumitomo Metal Mining Co., Ltd.	Tokyo, Japan	Nickel,Mining engineering,Natural resource management, ...[+2]	Patent: 57
93	Nippon Furnace Co. Ltd.	Kanagawa, Japan	Automation,Manufacturing engineering,Industrial engineering, ...[+2]	Patent: 57
94	Cummins, Inc.	Indiana, United States	Electric vehicle,Natural gas,Petroleum industry, ...[+2]	Patent: 56
95	Daihatsu Motor Co., Ltd.	Osaka, Japan	Automotive engineering,Proton exchange membrane fuel cell,Electric bus, ...[+2]	Patent: 56
96	Toyota Industries Corp.	Aichi, Japan	Textile,Software,Automotive engineering, ...[+2]	Patent: 55
97	Tosoh Corp.	Tokyo, Japan	Petrochemical,Chemical engineering,Immunoprotein, ...[+2]	Patent: 50
98	Sumitomo Heavy Industries, Ltd.	Tokyo, Japan	Sewage treatment,Proton therapy,Cryocooler, ...[+2]	Patent: 49
99	Kawasaki Steel Corp.	Japan		Patent: 49
100	Kawasaki Steel			Patent: 49