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Top 50 Key Players companies in Diesel exhaust fluid
by Most Patent Filings in the world in 2022

The Diesel exhaust fluid top 50 is Discovery PatSnap’ annual ranking of the top 50 Most Patent Filings Diesel exhaust fluid Key Players in the world. 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.
Diesel exhaust fluid (DEF) is an aqueous urea solution made with 32.5% urea and 67.5% deionized water. It is standardised as AUS 32 (aqueous urea solution) in ISO 22241. DEF is a consumable in selective catalytic reduction (SCR) that lowers NOₓ concentration in the diesel exhaust emissions from diesel engines.
#
Company Name
Region
Tech Topics
Total
1
Vicenza, Italy
Patent: 54
2
Patent: 45
3
Shopping mall,Truck
Patent: 45
4
Maharashtra, India
Automotive catalyst,Cisco Catalyst
Patent: 43
5
Patent: 37
6
Denmark
Patent: 32
7
United Kingdom
Patent: 31
8
Patent: 17
9
Patent: 16
10
Netherlands
Stamicarbon,Chemical engineering,Fertilizer,
...[+1]
Patent: 16
11
Patent: 14
12
Patent: 14
13
Patent: 13
14
Patent: 11
15
Patent: 10
16
Patent: 8
17
Patent: 8
18
Patent: 8
19
Automotive engineering,New Car Assessment Program,Automotive systems,
...[+2]
Patent: 8
20
Special purpose entity
Patent: 8
21
Barbados
Patent: 6
22
Patent: 6
23
South Korea
Patent: 5
24
South Korea
Customer expectation,Automotive engineering,Public transport,
...[+2]
Patent: 5
25
Patent: 5
26
Patent: 4
27
Chassis,Solenoid,Automation,
...[+2]
Patent: 4
28
Sweden
Patent: 4
29
Patent: 4
30
Patent: 4
31
Patent: 3
32
Patent: 3
33
Syddanmark, Denmark
Patent: 3
34
Patent: 3
35
Patent: 2
36
Patent: 2
37
Brenntag UK Ltd.
United Kingdom
Patent: 2
38
United Kingdom
Patent: 2
39
Patent: 2
40
Île-de-France, France
Patent: 2
41
Patent: 1
42
Health care,Biopharmaceutical,Drug,
...[+2]
Patent: 1
43
Brussels Hoofdstedelijk Gewest, Belgium
Patent: 1
44
Patent: 1
45
Patent: 1
46
Patent: 1
47
Patent: 1
48
Patent: 1
49
Brussels Hoofdstedelijk Gewest, Belgium
Hydrogen,Advertising,Gasoline
Patent: 1
50
Patent: 1
Page generation time: May 07 2025