Number of water purification patents worldwide | Statista

After years of continuous growth, the number of IPFs regarding water purification from rivers and lakes decreased in the period 2017 through 2021. In those five years, 111 applications were registered, a reduction from the 142 IPFs reported in the previous lustrum.

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Number of river and lake water purification applications of international patent families (IPFs) worldwide from 1992 to 2021

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Release date

July 2024

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Region

Worldwide

Survey time period

1992 to 2021

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