A23K 20/137
Containing two hetero atoms, of which at least one is nitrogen
Official title: containing two hetero atoms, of which at least one is nitrogen
A23K20/137 (Containing two hetero atoms, of which at least one is nitrogen) appears on 167 US grants and 139 published applications in this corpus.
Search patents in A23K- Granted patents
- 167
- Published applications
- 139
- Assignees
- 131
- Inventors
- 531
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 14 | 0 |
| 1977 | 13 | 0 |
| 1978 | 6 | 0 |
| 1979 | 5 | 0 |
| 1980 | 10 | 0 |
| 1981 | 8 | 0 |
| 1982 | 6 | 0 |
| 1983 | 7 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 6 | 0 |
| 1987 | 6 | 0 |
| 1988 | 5 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 4 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 2 |
| 2010 | 0 | 7 |
| 2011 | 0 | 4 |
| 2012 | 2 | 0 |
| 2013 | 2 | 2 |
| 2014 | 1 | 3 |
| 2015 | 3 | 14 |
| 2016 | 5 | 8 |
| 2017 | 3 | 6 |
| 2018 | 3 | 7 |
| 2019 | 6 | 6 |
| 2020 | 2 | 7 |
| 2021 | 0 | 12 |
| 2022 | 3 | 4 |
| 2023 | 6 | 17 |
| 2024 | 7 | 10 |
| 2025 | 3 | 22 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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Most cited
By later US patents
- Antidiabetic 3,4,5-trihydroxypiperidines252US 4,639,436 ABayer Aktiengesellschaft · 1987
- Compositions containing 4,5,6,7-tetrahydrobenz[b]thien-4-yl-ureas or derivatives and methods of enhancing growth rate125US 4,036,979 AAmerican Cyanamid Company · 1977
- Benzo-fused lactams promote release of growth hormone103US 5,283,241 AMerck & Co., Inc. · 1994
- Benzo-fused lactams promote release of growth hormone65US 5,672,596 AMerck & Co., Inc. · 1997
- Animal feedstuffs employing 3,4,5-trihydroxypiperidines39US 4,260,622 ABayer Aktiengesellschaft · 1981