A61K 31/439
The ring forming part of a bridged ring system
Official title: the ring forming part of a bridged ring system, e.g. quinuclidine (8-azabicyclo [3.2.1] octanes A61K31/46)
A61K31/439 (The ring forming part of a bridged ring system) appears on 1,318 US grants and 2,612 published applications in this corpus.
Search patents in A61K- Granted patents
- 1,318
- Published applications
- 2,612
- Assignees
- 972
- Inventors
- 4,798
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 12 | 0 |
| 1997 | 10 | 0 |
| 1998 | 30 | 0 |
| 1999 | 18 | 0 |
| 2000 | 11 | 0 |
| 2001 | 14 | 10 |
| 2002 | 26 | 42 |
| 2003 | 18 | 52 |
| 2004 | 10 | 45 |
| 2005 | 9 | 52 |
| 2006 | 10 | 44 |
| 2007 | 12 | 54 |
| 2008 | 8 | 55 |
| 2009 | 13 | 75 |
| 2010 | 14 | 90 |
| 2011 | 26 | 100 |
| 2012 | 39 | 89 |
| 2013 | 59 | 154 |
| 2014 | 95 | 164 |
| 2015 | 110 | 222 |
| 2016 | 111 | 170 |
| 2017 | 101 | 151 |
| 2018 | 93 | 127 |
| 2019 | 86 | 122 |
| 2020 | 67 | 128 |
| 2021 | 70 | 114 |
| 2022 | 50 | 110 |
| 2023 | 50 | 115 |
| 2024 | 61 | 97 |
| 2025 | 46 | 113 |
| 2026 | 33 | 117 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
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