| 年份 | 申请发明专利数量 |
|---|---|
| 2021 | — |
| 2020 | — |
| 2019 | 682 |
| 2018 | 661 |
| 2017 | 470 |
| 2016 | 475 |
| 2015 | 417 |
| 2014 | 414 |
| 2013 | 315 |
| 2012 | 329 |
| 2011 | 176 |
| 2010 | 144 |
| 2009 | 134 |
| 2008 | 131 |
| 2007 | 96 |
| 2006 | 13 |
| 2005 | 14 |
| 2004 | 23 |
| 2003 | 11 |
| 2002 | 18 |
| 2001 | 15 |
| 2000 | 12 |
| 1999 | 15 |
| 1998 | 13 |
| 1997 | 9 |
| 1996 | 1 |
| 1995 | 4 |
| 1994 | 0 |
| 1993 | 2 |
| 1992 | 2 |
| 1991 | 3 |
| 1990 | 4 |