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Top 20 Fast-growings companies in NOx
by Most Patent Filing In 1 Year in the Japan in 2018

The NOx top 20 is Discovery PatSnap’ annual ranking of the top 20 Most Patent Filing In 1 Year NOx Fast-growings in the Japan. Discovery has identified the top key players, startups & unicorns, fast-growings, news entrants in 2018, ranking from differnt perspectives, including patent filing intensity, academic research capability, news media heat. The company list is generated from various data types.
In atmospheric chemistry, NO x is a generic term for the nitrogen oxides that are most relevant for air pollution, namely nitric oxide (NO) and nitrogen dioxide (NO 2 ). These gases contribute to the formation of smog and acid rain, as well as affecting tropospheric ozone.
#
Company Name
Region
Tech Topics
Total
1
Toyota Motor Corp.
Sport utility vehicle,Mobile device,Public transport,
...[+2]
Patent: 32
2
Isuzu Motors Ltd.
Truck,Public transport,Diesel engine,
...[+2]
Patent: 20
3
Nihon Denso KK
Manufacturing engineering,Mechanical engineering
Patent: 13
4
N.E. Chemcat Corp.
Cisco Catalyst,Chemical engineering,Automotive catalyst,
...[+2]
Patent: 11
5
Mazda Motor Corp.
Automotive engineering,Reciprocating engine,Manual transmission,
...[+2]
Patent: 10
6
Nippon Denko Co., Ltd.
Metal,Industrial engineering,Manganese,
...[+2]
Patent: 7
7
DENSO Corp.
Automotive engineering,Industrial robot,Programmable logic controller,
...[+2]
Patent: 7
8
NGK Insulators, Ltd.
Beryllium copper,Industrial engineering,Pottery,
...[+2]
Patent: 6
9
NGK SPARK PLUG CO., LTD.
Spark plug,Automotive engineering,Ceramic art,
...[+2]
Patent: 5
10
Mitsubishi Power Ltd.
Turbine,Control system,Renewable energy,
...[+2]
Patent: 4
11
Miura Co., Ltd.
Boiler (power generation),Water-tube boiler,Refrigeration,
...[+2]
Patent: 4
12
So-Ken Co., Ltd.
Semiconductor,Electronics,Electronic component
Patent: 3
13
Fuji Corp. (Felt)
Textile (markup language),Energy materials,Textile,
...[+1]
Patent: 3
14
Chugai Co., Ltd.
Automotive engineering,Electronic component,Textile
Patent: 3
15
Mitsubishi Hitachi Power Systems
Control system
Patent: 2
16
Nippon Sanso KK
Industrial gas,Chemical engineering,Liquid helium,
...[+2]
Patent: 2
17
Toyota Industries Corp.
Textile,Software,Automotive engineering,
...[+2]
Patent: 2
18
Toyota Central R&D Labs, Inc.
Semiconductor,Power semiconductor device,System on a chip,
...[+2]
Patent: 2
19
JFE Engineering Corp.
Environmental protection,Renewable energy,Health care,
...[+2]
Patent: 2
20
Kawasaki Heavy Industries Ltd.
Turbine,Mechanical engineering,Manufacturing engineering,
...[+2]
Patent: 2
Page generation time: Dec 16 2025