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Top 20 Fast-growings companies in Diesel exhaust fluid
by Most Patent Filing In 3 Years in the world in 2018

The Diesel exhaust fluid top 20 is Discovery PatSnap’ annual ranking of the top 20 Most Patent Filing In 3 Years Diesel exhaust fluid Fast-growings in the world. 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.
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
United Kingdom
Patent: 31
2
Shopping mall,Truck
Patent: 23
3
Patent: 23
4
Denmark
Patent: 21
5
Vicenza, Italy
Patent: 16
6
Patent: 12
7
Patent: 12
8
Patent: 12
9
South Africa
Patent: 11
10
Patent: 11
11
Patent: 9
12
Maharashtra, India
Automotive catalyst,Cisco Catalyst
Patent: 9
13
Netherlands
Stamicarbon,Chemical engineering,Fertilizer,
...[+1]
Patent: 7
14
Special purpose entity
Patent: 4
15
Patent: 3
16
Automotive engineering,New Car Assessment Program,Automotive systems,
...[+2]
Patent: 3
17
Patent: 3
18
Brenntag UK Ltd.
United Kingdom
Patent: 2
19
Liaoning Sheng, China
Patent: 1
20
South Korea
Customer expectation,Automotive engineering,Public transport,
...[+2]
Patent: 1
Page generation time: May 11 2025