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Top 10 Fast-growings companies in Diesel exhaust fluid
by Most Patent Filing In 3 Years in the United States in 2021

The Diesel exhaust fluid top 10 is Discovery PatSnap’ annual ranking of the top 10 Most Patent Filing In 3 Years Diesel exhaust fluid Fast-growings in the United States. Discovery has identified the top key players, startups & unicorns, fast-growings, news entrants in 2021, 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
Caterpillar, Inc.
Turbine,Construction engineering,Mechanical engineering,
...[+2]
Patent: 12
2
Robert Bosch Corp.
Shopping mall,Truck
Patent: 7
3
Cummins, Inc.
Electric vehicle,Natural gas,Petroleum industry,
...[+2]
Patent: 6
4
Stant USA Corp.
Thermostat,Control valves,Management system
Patent: 4
5
PACCAR, Inc.
Truck,Automotive engineering,Public transport,
...[+2]
Patent: 4
6
Multiquip, Inc.
Tower,Cutting,Forestry,
...[+2]
Patent: 3
7
BorgWarner, Inc.
Electric vehicle,Automotive engineering,Gasoline,
...[+2]
Patent: 3
8
CNH Industrial America LLC
Manufacturing engineering,Mechanical engineering,Pulverizer,
...[+2]
Patent: 2
9
Gates Corp.
Belting,Fluid power,Power transmission,
...[+2]
Patent: 1
10
Donaldson Co., Inc.
Filtration,Filter (aquarium),Industrial engineering,
...[+2]
Patent: 1
Page generation time: Jun 27 2025