| 年份 | 申请发明专利数量 |
|---|---|
| 2022 | 216 |
| 2021 | 264 |
| 2020 | 293 |
| 2019 | 265 |
| 2018 | 243 |
| 2017 | 226 |
| 2016 | 233 |
| 2015 | 183 |
| 2014 | 120 |
| 2013 | 110 |
| 2012 | 86 |
| 2011 | 94 |
| 2010 | 74 |
| 2009 | 67 |
| 2008 | 53 |
| 2007 | 39 |
| 2006 | 41 |
| 2005 | 32 |
| 2004 | 27 |
| 2003 | 23 |
| 2002 | 17 |
| 2001 | 19 |
| 2000 | 8 |
| 1999 | 17 |
| 1998 | 9 |
| 1997 | 6 |
| 1996 | 14 |
| 1995 | 12 |
| 1994 | 12 |
| 1993 | 7 |
| 1992 | 11 |
| 1991 | 7 |
| 1990 | 4 |