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Top 20 Key Players companies in NOx
by Most Patent Citation in the Germany in 2019

The NOx top 20 is Discovery PatSnap’ annual ranking of the top 20 Most Patent Citation NOx Key Players in the Germany. 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.
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
patent citation: 1,065
2
patent citation: 1,008
3
Volkswagenwerk AG
patent citation: 752
4
patent citation: 735
5
Daimier AG
patent citation: 721
6
patent citation: 471
7
patent citation: 339
8
patent citation: 339
9
patent citation: 287
10
patent citation: 247
11
patent citation: 164
12
patent citation: 132
13
patent citation: 105
14
patent citation: 100
15
Saint-Gobain Isover G+H AG
patent citation: 98
16
patent citation: 97
17
L. & C. Steinmueller GmbH
patent citation: 94
18
Bayerische Motoren Werke AG
Sales management,Product design,Automotive engineering,
...[+2]
patent citation: 66
19
patent citation: 50
20
Health care,Biology,Chemical engineering,
...[+2]
patent citation: 48
Page generation time: Jun 21 2025