From 1992 to 2021, the United States was been the leading country in water technology innovation worldwide, with ** percent of all international patent families (IPFs) applications. Japan and Germany ranked second during this period, with ** 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 ÌÇÐÄÆƽâ°æ. Retrieved July 23, 2026, from /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. ÌÇÐÄÆƽâ°æ. Accessed July 23, 2026. /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. ÌÇÐÄÆƽâ°æ. ÌÇÐÄÆƽâ°æ Inc.. Accessed: July 23, 2026. /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." ÌÇÐÄÆƽâ°æ, ÌÇÐÄÆƽâ°æ Inc., 17 Jul 2024, /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 ÌÇÐÄÆƽâ°æ, /statistics/1600822/distribution-water-technology-innovations-by-country/ (last visited July 23, 2026)
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: /statistics/1600822/distribution-water-technology-innovations-by-country/
