Top 100 Key Players companies in NOx by Most Patent Citation in the United States in 2022 – Discovery

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The NOx top 100 is Discovery PatSnap’ annual ranking of the top 100 Most Patent Citation NOx Key Players in the United States. Discovery has identified the top key players, startups & unicorns, fast-growings, news entrants in 2022, ranking from differnt perspectives, including patent filing intensity, academic research capability, news media heat. The company list is generated from various data types.

1	General Electric Co.	Massachusetts, United States	Energy management,Turbine,Electronics, ...[+2]	patent citation: 2,317
2	Exxon Mobil Corp.	Texas, United States	Petroleum,Petroleum industry,Chemical engineering, ...[+2]	patent citation: 1,618
3	Mobil Corp.	Texas, United States	Petroleum industry,Petroleum,Natural gas	patent citation: 1,618
4	BASF Corp.	New Jersey, United States	Nutrition,Chemical engineering,Aerospace, ...[+2]	patent citation: 1,440
5	Caterpillar, Inc.	Illinois, United States	Turbine,Construction engineering,Mechanical engineering, ...[+2]	patent citation: 1,356
6	John Zink Co. LLC	Oklahoma, United States	Control equipment,Hydronics,Combustion system, ...[+2]	patent citation: 1,090
7	International Engine Intellectual Property Co. LLC	Illinois, United States	Intellectual property,Automotive engineering	patent citation: 1,066
8	Robert Bosch Corp.	Michigan, United States	Shopping mall,Truck	patent citation: 1,065
9	Exxon Research & Engineering Co.	United States		patent citation: 895
10	CDTi Advanced Materials, Inc.	California, United States	Automotive engineering,Cisco Catalyst,Exhaust emission, ...[+2]	patent citation: 772
11	Volkswagen Group of America, Inc.	Michigan, United States	Truck,Automotive engineering,Automotive industry	patent citation: 752
12	The Babcock & Wilcox Co.	Ohio, United States	Electronics,Flue-gas desulfurization,Control equipment, ...[+2]	patent citation: 723
13	W.R. Grace & Co.	United States	Coating,Computer hardware,Petrochemical, ...[+2]	patent citation: 686
14	Air Products & Chemicals, Inc.	Pennsylvania, United States	Industrial gas,Chemical engineering,Helium, ...[+2]	patent citation: 666
15	Solar Turbines, Inc.	California, United States	Turbine,Petroleum industry,Power transmission, ...[+2]	patent citation: 616
16	Corning, Inc.	New York, United States	Telecommunications,Computer hardware,Electronics, ...[+2]	patent citation: 584
17	Shell Oil Co.	Texas, United States	Petrochemical,Nanomaterials,Chemical engineering, ...[+2]	patent citation: 551
18	Delphi Technology, Inc.	Massachusetts, United States	Software,Business intelligence,Systems design, ...[+2]	patent citation: 508
19	Honeywell International, Inc.	North Carolina, United States	Aerospace,Electronics,Market research, ...[+2]	patent citation: 495
20	Praxair S.T. Technology, Inc.	Connecticut, United States	Information technology consulting,Systems design,Coating, ...[+2]	patent citation: 478
21	Koch Engineering Co., Inc.	Kansas, United States	Petroleum,Petroleum industry	patent citation: 460
22	BASF Catalysts LLC	New Jersey, United States	Polyolefin,Mica,Metal, ...[+2]	patent citation: 451
23	ClearSign Technologies Corp.	Washington, United States	Petroleum industry,Chemical reaction,Combustion system, ...[+2]	patent citation: 428
24	Powerspan Corp.	New Hampshire, United States	Fossil fuel,Clean Air Act,Acid rain, ...[+2]	patent citation: 423
25	Micron Technology, Inc.	Idaho, United States	Semiconductor,Computer hardware,Solid-state drive, ...[+2]	patent citation: 410
26	GE Energy & Environmental Research Corp.	California, United States		patent citation: 384
27	United Technologies	Connecticut, United States	Aerospace,Public transport,Building automation, ...[+2]	patent citation: 375
28	United-Tech, Inc.	Oklahoma, United States	Yeast,Telecommunications,Chemical treatment, ...[+2]	patent citation: 375
29	Calgon Carbon Corp.	Pennsylvania, United States	Activated carbon,Carbon,Industrial engineering, ...[+2]	patent citation: 371
30	Siemens Energy, Inc.	United States	HVAC,Offshore wind power,Wind power, ...[+1]	patent citation: 361
31	Energy & Environmental Research Corp.	California, United States	Nitrogen oxide	patent citation: 334
32	PQ Corp.	Pennsylvania, United States	Synthetic rubber,Chemical engineering,Silicate, ...[+2]	patent citation: 333
33	Texaco Development Corp.	Texas, United States		patent citation: 332
34	VTR LS Management LLC	Kentucky, United States		patent citation: 287
35	GEO2 Technologies, Inc.	Massachusetts, United States	Microstructure,Biotechnology	patent citation: 269
36	General Motors Co.	Michigan, United States	Sport utility vehicle,Public transport,Enterprise software, ...[+2]	patent citation: 248
37	Cummins, Inc.	Indiana, United States	Electric vehicle,Natural gas,Petroleum industry, ...[+2]	patent citation: 239
38	Bank of America Corp.	North Carolina, United States	Investment banking,Underwriting,Asset and liability management, ...[+2]	patent citation: 237
39	Westinghouse Electric Co. LLC	Pennsylvania, United States	Nuclear power plant,Pressurized water reactor,Power transmission, ...[+2]	patent citation: 230
40	EmeraChem LLC	Tennessee, United States	Petrochemical,Catalyst support,Health care, ...[+1]	patent citation: 226
41	Fuel Tech, Inc.	Illinois, United States	Air pollution,Chemical energy,Petroleum industry, ...[+2]	patent citation: 224
42	INDRESCO, Inc.	Texas, United States	Materials science,Construction engineering	patent citation: 212
43	Petrocon Engineering, Inc.	Texas, United States	Construction engineering,Petrochemical,Automation, ...[+2]	patent citation: 200
44	I. Kruger, Inc.	North Carolina, United States	Irrigation,Water supply	patent citation: 194
45	Arvin Technologies, Inc.	Michigan, United States	Automotive engineering	patent citation: 193
46	Carrier Corp.	Indiana, United States	Refrigeration,Air conditioning,Mechanical engineering, ...[+2]	patent citation: 192
47	Tenneco Automotive Operating Co., Inc.	Illinois, United States	Steering system,Mechanical engineering,Cutlery, ...[+1]	patent citation: 184
48	Zeeco, Inc.	Oklahoma, United States	Fuel gas,Air pollution	patent citation: 171
49	Advanced Fuel Research, Inc.	Connecticut, United States	Chemistry,Fishery,Botany, ...[+2]	patent citation: 164
50	CRSS, Inc.	Texas, United States	Construction engineering	patent citation: 162
51	Key Safety Systems, Inc.	Michigan, United States	Airbag,Automotive engineering,Manufacturing engineering, ...[+2]	patent citation: 161
52	Ethyl Corp.	Virginia, United States	Industrial engineering,Gasoline,Industrial gas, ...[+2]	patent citation: 159
53	Fleet Capital Corp.	Massachusetts, United States		patent citation: 141
54	Selas Heat Technology Co. LLC	Ohio, United States	Refractory,Automation,Manufacturing engineering, ...[+2]	patent citation: 136
55	InEnTec, Inc.	Washington, United States	Plasma,Industrial engineering,Chemical engineering, ...[+2]	patent citation: 134
56	Automotive Systems Laboratory, Inc.	Michigan, United States		patent citation: 133
57	Achates Power, Inc.	California, United States	Electric vehicle,Public transport,Power transmission, ...[+2]	patent citation: 127
58	Duquesne Light Co.	Pennsylvania, United States	Electric energy,Power transmission,Efficient energy use, ...[+1]	patent citation: 123
59	thyssenkrupp Industrial Solutions AG	Wisconsin, United States	Industrial engineering,Mechanical engineering,Value added, ...[+2]	patent citation: 122
60	The Quantum Group, Inc.	United States	Business process,Leading edge,Healthcare industry	patent citation: 119
61	Ford Motor Co.	Michigan, United States	Truck,Public transport,Automotive engineering, ...[+2]	patent citation: 116
62	Foster Wheeler Energy International, Inc.	New Jersey, United States	Construction engineering	patent citation: 116
63	Coal Technology Corp.	Wyoming, United States	Energy conservation,Environmental consulting	patent citation: 115
64	Bloom Engineering Co., Inc.	Pennsylvania, United States	Combustion system,Mechanical engineering,Refrigeration, ...[+1]	patent citation: 112
65	Aqua-Chem, Inc.	Tennessee, United States	Water processing,Refrigeration,Heat transfer, ...[+2]	patent citation: 109
66	ExxonMobil Chemical Patents, Inc.	United States		patent citation: 109
67	Lockheed Martin Energy Systems, Inc.	North Carolina, United States		patent citation: 108
68	Catalytic Solutions, Inc.	California, United States	Control system,Motor oil,Cisco Catalyst, ...[+2]	patent citation: 107
69	Babcock & Wilcox Technology, Inc.	Virginia, United States	Power transmission	patent citation: 106
70	Afton Chemical Corp.	Virginia, United States	Diesel engine,Petrochemical,Chemical engineering, ...[+2]	patent citation: 104
71	ABB Automation, Inc.	United States	Automation,Manufacturing engineering,Mechanical engineering, ...[+2]	patent citation: 101
72	GTE Laboratories, Inc.	Massachusetts, United States		patent citation: 101
73	Phillips Petroleum Co.	Oklahoma, United States	Solar energy,Public transport	patent citation: 99
74	Stone & Webster Engineering Corp.	Massachusetts, United States		patent citation: 98
75	ANR Pipeline Co.	Texas, United States	Natural gas,Petroleum industry	patent citation: 97
76	Progress Rail Locomotive, Inc.	Illinois, United States	Manufacturing engineering,Marine propulsion,Base oil, ...[+2]	patent citation: 91
77	AlliedSignal, Inc.	Indiana, United States	Aerospace,Automotive engineering,Aerospace systems, ...[+2]	patent citation: 88
78	TriMark Corp.	Iowa, United States	Enclosure,Metal,Industrial engineering, ...[+1]	patent citation: 87
79	E.I. du Pont de Nemours & Co.	Delaware, United States	Agriculture,Materials science,Electronics, ...[+2]	patent citation: 86
80	Chevron Corp.	California, United States	Lubricant,Petroleum,Petroleum industry, ...[+2]	patent citation: 83
81	Chevron U.S.A., Inc.	California, United States	Gasoline,Petroleum industry,Petroleum, ...[+2]	patent citation: 83
82	Alzeta Corp.	California, United States	Petroleum industry	patent citation: 83
83	Marsulex Environmental Technologies Corp.	Pennsylvania, United States	Air pollution,Flue-gas desulfurization,Automation, ...[+2]	patent citation: 82
84	Teledyne Monitor Labs, Inc.	Colorado, United States	Electronics,Dependability,Avionics, ...[+2]	patent citation: 81
85	Berkeley, Inc.	Idaho, United States	Asset management	patent citation: 80
86	Olin Corp.	Missouri, United States	Epoxy,Chemical engineering,Ammunition, ...[+2]	patent citation: 79
87	Altex Technologies Corp.	California, United States	Renewable energy,Gas turbines,Energy system, ...[+2]	patent citation: 79
88	Synopsys, Inc.	California, United States	Software,Information technology consulting,Electronic design automation, ...[+2]	patent citation: 78
89	The Dow Chemical Co.	Michigan, United States	Coating,Agriculture,Chemical engineering, ...[+2]	patent citation: 78
90	Power Flame, Inc.	Kansas, United States	Petroleum industry,NOx,Control system	patent citation: 77
91	Hitachi High-Tech Corp.	Illinois, United States	Semiconductor,Electronics,Microscope, ...[+2]	patent citation: 75
92	Rohm & Haas Co.	Pennsylvania, United States	Adhesive,Agriculture,Coating, ...[+2]	patent citation: 73
93	The Boeing Co.	Illinois, United States	Aerospace,Satellite,National security, ...[+2]	patent citation: 72
94	Integrated Environmental Technologies Ltd.	Pennsylvania, United States	Chemical engineering,Hydraulic fracturing,Disinfectant, ...[+1]	patent citation: 71
95	Chrysler LLC	Michigan, United States	Truck,Automotive engineering,Chassis	patent citation: 71
96	Martin Marietta Energy Systems, Inc.	Tennessee, United States		patent citation: 67
97	Giner Electrochemical Systems LLC	Massachusetts, United States	Chemical engineering,Independent business,Capacitor, ...[+1]	patent citation: 65
98	Faurecia Emissions Control Technologies USA LLC	Indiana, United States	Automotive engineering	patent citation: 63
99	Mack Trucks, Inc.	North Carolina, United States	Truck,Construction engineering,Public transport, ...[+2]	patent citation: 62
100	Ecovyst Catalyst Technologies LLC	Delaware, United States		patent citation: 62