分面浏览：发表日期 |
| 当前检索式 | ((ALL：Nitrogen)) |
| 限定条件 | ((内容类型：专利)) |
| 2023 1 | 2022 2 | 2021 4 |
| 2020 2 | 2019 14 | 2018 12 |
| 2017 6 | 2016 11 | 2015 15 |
| 2014 13 | 2013 15 | 2012 12 |
| 2011 1 | 2010 15 | 2009 7 |
| 2008 8 | 2007 8 | 2006 10 |
| 2005 9 | 2004 6 | 2003 11 |
| 2002 1 | 2001 2 | 2000 6 |
| 1999 4 | 1998 3 | 1997 3 |
| 1996 1 | 1995 1 | 1994 4 |
| 1993 3 | 1992 4 | 1991 1 |
| 1990 2 | 1989 4 | 1988 6 |
| 1987 3 | 1986 3 | 1985 1 |
| 1984 4 | 1983 6 | 1982 1 |
| 1981 1 | 1976 1 | 1973 1 |
| 1970 1 | 1969 2 | 1968 1 |
| 1967 4 | 1966 2 | 1965 2 |
