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Top 20 Key Players companies in VRLA battery
by Most Patent Filings in the world in 2021

The VRLA battery top 20 is Discovery PatSnap’ annual ranking of the top 20 Most Patent Filings VRLA battery Key Players in the world. 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 valve-regulated lead-acid battery (VRLA battery) sometimes called sealed lead-acid (SLA) or maintenance free battery, is a type of lead-acid battery. There are three primary types of VRLA batteries, sealed VR wet cell, absorbent glass mat (AGM) and gel cell. Gel cells add silica dust to the electrolyte, forming a thick putty-like gel. These are sometimes referred to as "silicone batteries". AGM (absorbent glass mat) batteries feature fiberglass mesh between the battery plates which serves to contain the electrolyte and separate the plates. Both designs offer advantages and disadvantages compared to conventional batteries and sealed VR wet cells, as well as each other.
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Company Name
Region
Tech Topics
Total
1
Membrane,Coating,Lithium-ion battery,
...[+2]
Patent: 15
2
Patent: 5
3
Patent: 5
4
Patent: 5
5
Patent: 4
6
Patent: 4
7
Patent: 4
8
Patent: 3
9
Uusimaa, Finland
Patent: 3
10
South Korea
Yarn,Aramid,Fiber,
...[+2]
Patent: 2
11
Electric vehicle,Power grid,Total asset,
...[+2]
Patent: 2
12
Karnataka, India
Patent: 2
13
Daejeon, South Korea
Patent: 2
14
Germany
Filtration,Cellulose,Textile (markup language)
Patent: 2
15
Patent: 2
16
Patent: 1
17
Patent: 1
18
Patent: 1
19
Patent: 1
20
Patent: 1
Page generation time: Apr 25 2025