A61K 31/546
Containing further heterocyclic rings
Official title: containing further heterocyclic rings, e.g. cephalothin
A61K31/546 (Containing further heterocyclic rings) appears on 452 US grants and 820 published applications in this corpus.
Search patents in A61K- Granted patents
- 452
- Published applications
- 820
- Assignees
- 374
- Inventors
- 1,469
- Latest grant
- 29 Sep 2026
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| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
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| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
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| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 3 | 0 |
| 2002 | 10 | 9 |
| 2003 | 2 | 9 |
| 2004 | 0 | 11 |
| 2005 | 0 | 9 |
| 2006 | 0 | 6 |
| 2007 | 4 | 12 |
| 2008 | 3 | 18 |
| 2009 | 3 | 16 |
| 2010 | 4 | 16 |
| 2011 | 4 | 11 |
| 2012 | 10 | 18 |
| 2013 | 10 | 35 |
| 2014 | 17 | 67 |
| 2015 | 38 | 62 |
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| 2017 | 38 | 65 |
| 2018 | 37 | 66 |
| 2019 | 42 | 40 |
| 2020 | 41 | 57 |
| 2021 | 25 | 46 |
| 2022 | 26 | 58 |
| 2023 | 22 | 42 |
| 2024 | 21 | 43 |
| 2025 | 27 | 27 |
| 2026 | 14 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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By later US patents
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