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Top 50 Key Players companies in Butterworth filter
by Most Patent Filings in the world in 2022

The Butterworth filter top 50 is Discovery PatSnap’ annual ranking of the top 50 Most Patent Filings Butterworth filter 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.
The Butterworth filter is a type of signal processing filter designed to have a frequency response as flat as possible in the passband. It is also referred to as a maximally flat magnitude filter. It was first described in 1930 by the British engineer and physicist Stephen Butterworth in his paper entitled "On the Theory of Filter Amplifiers".
#
Company Name
Region
Tech Topics
Total
1
Nuclear medicine,Health care,Medical imaging,
...[+2]
Patent: 7
2
Noord-Holland, Netherlands
Health care,Wellness Programs,Medical imaging,
...[+2]
Patent: 5
3
Patent: 3
4
Patent: 3
5
Patent: 3
6
United Kingdom
Patent: 3
7
Patent: 3
8
Patent: 2
9
Electric vehicle,Power grid,Total asset,
...[+2]
Patent: 2
10
Patent: 2
11
Aerospace,Global workforce,Photography,
...[+2]
Patent: 2
12
GM, GB
Patent: 2
13
Patent: 2
14
Patent: 2
15
Patent: 2
16
Patent: 1
17
Patent: 1
18
Patent: 1
19
Microscope,Photography,Motion capture,
...[+2]
Patent: 1
20
Patent: 1
21
Patent: 1
22
Patent: 1
23
Patent: 1
24
Patent: 1
25
Patent: 1
26
Patent: 1
27
Patent: 1
28
Patent: 1
29
Île-de-France, France
Patent: 1
30
Patent: 1
31
Patent: 1
32
Patent: 1
33
Île-de-France, France
Activity tracker,Health care,Software,
...[+2]
Patent: 1
34
Patent: 1
35
Patent: 1
36
Cambridgeshire, United Kingdom
Patent: 1
37
United Kingdom
Patent: 1
38
South Korea
Patent: 1
39
Patent: 1
40
South Korea
Patent: 1
41
Denmark
Patent: 1
42
Patent: 1
43
Patent: 1
44
Patent: 1
45
Yinchuan Lanqing Network Information Technology Co., Ltd.
Patent: 1
46
Patent: 1
47
Patent: 1
48
Patent: 1
49
United Kingdom
Patent: 1
50
Patent: 1
Page generation time: Jul 04 2025