| Characteristic | Number of patents |
|---|---|
| 2021 | 28,731 |
| 2020 | 28,902 |
| 2019 | 28,797 |
| 2018 | 28,220 |
| 2017 | 27,860 |
| 2016 | 26,554 |
| 2015 | 25,749 |
| 2014 | 27,014 |
| 2013 | 28,158 |
| 2012 | 27,628 |
| 2011 | 26,044 |
| 2010 | 22,309 |
| 2009 | 18,638 |
| 2008 | 18,057 |
| 2007 | 15,579 |
| 2006 | 13,668 |
| 2005 | 11,817 |
| 2004 | 10,198 |
| 2003 | 9,415 |
| 2002 | 8,751 |
| 2001 | 8,005 |
| 2000 | 6,919 |
| 1999 | 5,678 |
| 1998 | 4,902 |
| 1997 | 4,408 |
| 1996 | 3,761 |
| 1995 | 3,229 |
| 1994 | 2,870 |
| 1993 | 2,416 |
| 1992 | 2,067 |
| 1991 | 1,756 |
| 1990 | 1,475 |
| 1989 | 996 |
| 1988 | 866 |
| 1987 | 621 |
| 1986 | 554 |
| 1985 | 405 |
| 1984 | 368 |
| 1983 | 294 |
| 1982 | 324 |
| 1981 | 267 |
| 1980 | 246 |
| 1979 | 179 |
| 1978 | 54 |
| 1977 | 0 |
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Source
Source
Release date
July 2025
More information
Region
Worldwide
Survey time period
1960 to 2021
Special properties
Applications filed under the PCT
Supplementary notes
To access this dataset on the OECD website, in the find data tab select
Environment>Innovation in environment-related technologies>Technology development>Select World and the appropriate date range.
Citation formats
