From 1992 to 2021, the United States was been the leading country in water technology innovation worldwide, with 23 percent of all international patent families (IPFs) applications. Japan and Germany ranked second during this period, with 12 percent of the IPFs registered each.
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European Patent Office. (July 17, 2024). Distribution of the number of water technology-related applications of international patent families (IPFs) worldwide from 1992 to 2021, by country [Graph]. In Statista. Retrieved July 20, 2025, from https://www.statista.com/statistics/1600822/distribution-water-technology-innovations-by-country/
European Patent Office. "Distribution of the number of water technology-related applications of international patent families (IPFs) worldwide from 1992 to 2021, by country." Chart. July 17, 2024. Statista. Accessed July 20, 2025. https://www.statista.com/statistics/1600822/distribution-water-technology-innovations-by-country/
European Patent Office. (2024). Distribution of the number of water technology-related applications of international patent families (IPFs) worldwide from 1992 to 2021, by country. Statista. Statista Inc.. Accessed: July 20, 2025. https://www.statista.com/statistics/1600822/distribution-water-technology-innovations-by-country/
European Patent Office. "Distribution of The Number of Water Technology-related Applications of International Patent Families (Ipfs) Worldwide from 1992 to 2021, by Country." Statista, Statista Inc., 17 Jul 2024, https://www.statista.com/statistics/1600822/distribution-water-technology-innovations-by-country/
European Patent Office, Distribution of the number of water technology-related applications of international patent families (IPFs) worldwide from 1992 to 2021, by country Statista, https://www.statista.com/statistics/1600822/distribution-water-technology-innovations-by-country/ (last visited July 20, 2025)
Distribution of the number of water technology-related applications of international patent families (IPFs) worldwide from 1992 to 2021, by country [Graph], European Patent Office, July 17, 2024. [Online]. Available: https://www.statista.com/statistics/1600822/distribution-water-technology-innovations-by-country/
