C07D 221/22
Bridged ring systems
C07D221/22 (Bridged ring systems) appears on 516 US grants and 419 published applications in this corpus.
Search patents in C07D- Granted patents
- 516
- Published applications
- 419
- Assignees
- 269
- Inventors
- 1,245
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 15 | 0 |
| 1977 | 12 | 0 |
| 1978 | 18 | 0 |
| 1979 | 14 | 0 |
| 1980 | 18 | 0 |
| 1981 | 16 | 0 |
| 1982 | 5 | 0 |
| 1983 | 8 | 0 |
| 1984 | 6 | 0 |
| 1985 | 8 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 8 | 0 |
| 1989 | 6 | 0 |
| 1990 | 6 | 0 |
| 1991 | 4 | 0 |
| 1992 | 8 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 6 | 0 |
| 1996 | 7 | 0 |
| 1997 | 8 | 0 |
| 1998 | 7 | 0 |
| 1999 | 8 | 0 |
| 2000 | 7 | 0 |
| 2001 | 4 | 2 |
| 2002 | 9 | 11 |
| 2003 | 9 | 11 |
| 2004 | 6 | 12 |
| 2005 | 7 | 13 |
| 2006 | 8 | 14 |
| 2007 | 9 | 11 |
| 2008 | 3 | 12 |
| 2009 | 7 | 17 |
| 2010 | 6 | 22 |
| 2011 | 12 | 22 |
| 2012 | 17 | 18 |
| 2013 | 17 | 13 |
| 2014 | 22 | 24 |
| 2015 | 21 | 29 |
| 2016 | 21 | 22 |
| 2017 | 15 | 20 |
| 2018 | 21 | 17 |
| 2019 | 16 | 20 |
| 2020 | 22 | 24 |
| 2021 | 13 | 17 |
| 2022 | 12 | 20 |
| 2023 | 5 | 8 |
| 2024 | 9 | 19 |
| 2025 | 7 | 12 |
| 2026 | 8 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Calixarene compounds and uses thereof25 Aug 2026US 12,714,682 B2Universität Wien
- Dextrorphan prodrugs and processes for making and using them23 Jun 2026US 12,662,456 B2Zevra Therapeutics, Inc.
- Opioid receptor antagonists2 Jun 2026US 12,643,907 B2University of Southern California
- Method for introducing deuterated lower alkyl into amine moiety of compound containing secondary amine19 May 2026US 12,630,487 B2Otsuka Pharmaceutical Co., Ltd.
- Carboxylic acid containing indanyl compounds for the treatment of neurodegenerative diseases12 May 2026US 12,624,003 B2Celgene Corporation
- Levorphanol prodrugs and processes for making and using them10 Sep 2026US 2026/0265201 A1Zevra Therapeutics, Inc.
- Methods of producing morphinan alkaloids and derivatives27 Aug 2026US 2026/0250729 A1Antheia, Inc.
- Lsd1 modulators23 Jul 2026US 2026/0209214 A1Recursion Pharmaceuticals, Inc.
- Hdac6 inhibitors and uses thereof18 Jun 2026US 2026/0167604 A1Eikonizo Therapeutics, Inc.
- Novel lappaconitine derivative and use thereof30 Apr 2026US 2026/0116858 A1Qgenetics Co., Ltd.
Most cited
By later US patents
- Morphinan compounds151US 7,973,049 B2Concert Pharmaceuticals, Inc. · 2011
- Morphinan compounds142US 8,188,110 B2Concert Pharmaceuticals, Inc. · 2012
- Morphinan compounds140US 8,541,436 B2Concert Pharmaceuticals, Inc. · 2013
- Dextromethorphan hydrochloride137US 8,017,623 B2Trinity Laboratories, Inc. · 2011
- 9-Hydroxy-6,7-benzomorphans84US 3,966,747 ABristol-Myers Company · 1976