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Top 20 Fast-growings companies in Diesel exhaust fluid
by Most Patent Filing In 5 Years in the world in 2022

The Diesel exhaust fluid top 20 is Discovery PatSnap’ annual ranking of the top 20 Most Patent Filing In 5 Years Diesel exhaust fluid Fast-growings 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
Shopping mall,Truck
Patent: 16
2
Patent: 16
3
Patent: 15
4
Vicenza, Italy
Patent: 14
5
Denmark
Patent: 9
6
Maharashtra, India
Automotive catalyst,Cisco Catalyst
Patent: 9
7
Patent: 7
8
Barbados
Patent: 6
9
Patent: 4
10
Patent: 4
11
Patent: 4
12
South Korea
Customer expectation,Automotive engineering,Public transport,
...[+2]
Patent: 4
13
Patent: 4
14
South Korea
Patent: 4
15
United Kingdom
Patent: 4
16
Patent: 3
17
Syddanmark, Denmark
Patent: 3
18
Patent: 2
19
Patent: 2
20
Patent: 2
Page generation time: May 07 2025