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Top 20 Fast-growings companies in Catalytic converter
by Most Patent Filing In 3 Years in the United States in 2021

The Catalytic converter top 20 is Discovery PatSnap’ annual ranking of the top 20 Most Patent Filing In 3 Years Catalytic converter 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.
A catalytic converter is an exhaust emission control device that reduces toxic gases and pollutants in exhaust gas from an internal combustion engine into less-toxic pollutants by catalyzing a redox reaction (an oxidation and a reduction reaction). Catalytic converters are usually used with internal combustion engines fueled by either gasoline or diesel—including lean-burn engines as well as kerosene heaters and stoves.
#
Company Name
Region
Tech Topics
Total
1
Shopping mall,Truck
Patent: 93
2
Patent: 65
3
Patent: 6
4
Patent: 4
5
Patent: 3
6
Patent: 3
7
Patent: 3
8
Patent: 2
9
Patent: 2
10
Patent: 2
11
Patent: 2
12
Product category
Patent: 2
13
Library science,Work ethic,Psychology,
...[+2]
Patent: 1
14
Petroleum industry,Project team,Goods and services,
...[+1]
Patent: 1
15
Patent: 1
16
Patent: 1
17
Patent: 1
18
Patent: 1
19
Patent: 1
20
Social influence,Fire prevention,Fire protection,
...[+2]
Patent: 1
Page generation time: Aug 11 2025