C07D 221/04
Ortho- or peri-condensed ring systems
C07D221/04 (Ortho- or peri-condensed ring systems) appears on 1,651 US grants and 1,341 published applications in this corpus.
Search patents in C07D- Granted patents
- 1,651
- Published applications
- 1,341
- Assignees
- 849
- Inventors
- 4,627
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 44 | 0 |
| 1977 | 33 | 0 |
| 1978 | 26 | 0 |
| 1979 | 27 | 0 |
| 1980 | 14 | 0 |
| 1981 | 18 | 0 |
| 1982 | 17 | 0 |
| 1983 | 12 | 0 |
| 1984 | 10 | 0 |
| 1985 | 12 | 0 |
| 1986 | 21 | 0 |
| 1987 | 14 | 0 |
| 1988 | 12 | 0 |
| 1989 | 15 | 0 |
| 1990 | 21 | 0 |
| 1991 | 25 | 0 |
| 1992 | 19 | 0 |
| 1993 | 34 | 0 |
| 1994 | 26 | 0 |
| 1995 | 23 | 0 |
| 1996 | 41 | 0 |
| 1997 | 54 | 0 |
| 1998 | 48 | 0 |
| 1999 | 49 | 0 |
| 2000 | 49 | 0 |
| 2001 | 47 | 10 |
| 2002 | 48 | 42 |
| 2003 | 43 | 54 |
| 2004 | 28 | 62 |
| 2005 | 23 | 58 |
| 2006 | 39 | 67 |
| 2007 | 19 | 46 |
| 2008 | 30 | 61 |
| 2009 | 30 | 70 |
| 2010 | 42 | 61 |
| 2011 | 34 | 55 |
| 2012 | 49 | 44 |
| 2013 | 48 | 52 |
| 2014 | 46 | 68 |
| 2015 | 59 | 55 |
| 2016 | 49 | 76 |
| 2017 | 47 | 53 |
| 2018 | 32 | 50 |
| 2019 | 44 | 46 |
| 2020 | 36 | 51 |
| 2021 | 45 | 50 |
| 2022 | 36 | 44 |
| 2023 | 31 | 50 |
| 2024 | 32 | 40 |
| 2025 | 29 | 45 |
| 2026 | 21 | 31 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Methods of making WEE1 inhibitor compounds6 Oct 2026US 12,753,178 B2Recurium IP Holdings, LLC
- Dopamine receptor d1 agonists and methods of use22 Sep 2026US 12,741,940 B2Mayo Foundation for Medical Education and Research
- Calixarene compounds and uses thereof25 Aug 2026US 12,714,682 B2Universität Wien
- Tetrahydrobenzo-quinoline sulfonamide derivatives useful as IgE modulators23 Jun 2026US 12,662,455 B2Ucb Biopharma Srl
- Oxynitidine derivatives useful as inhibitors of topoisomerase IB (TOP1) and tyrosyl-DNA phosphodiesterase 1 (TDP1)16 Jun 2026US 12,655,107 B2Shenzhen Xuhua Biotech Co. Ltd.
- Compound containing oxo-pyrido-aliphatic ring or aliphatic heterocyclic structure, and medical use thereof8 Oct 2026US 2026/0308164 A1Sichuan Purity Pharmaceutical Co., Ltd.
- Photoactive compounds1 Oct 2026US 2026/0299409 A1Merck Patent GmbH
- N-(n-aminoalkyl)phenanthridiunium series of chloride-sensitive fluorophores and methods of use thereof10 Sep 2026US 2026/0265202 A1The General Hospital Corporation
- Small molecule inhibitors of mammalian slc6a19 function3 Sep 2026US 2026/0257995 A1Jnana Therapeutics Inc.
- Light emitting element and amine compound for the same3 Sep 2026US 2026/0262446 A1Samsung Display Co., Ltd.
Most cited
By later US patents
- Dimeric and trimeric nucleic acid dyes, and associated systems and methods164US 7,776,567 B2AlleLogic Biosciences Corporation · 2010
- HMG-CoA reductase inhibitors and method156US 6,620,821 B2Bristol-Myers Squibb Company · 2003
- Substituted heterocycle fused gamma-carbolines138US 6,552,017 B1Bristol-Myers Squibb Pharma Company · 2003
- Substituted heterocycle fused gamma-carbolines131US 6,548,493 B1Bristol-Myers Squibb Pharma Company · 2003
- Steroid receptor modulator compounds and methods128US 5,696,127 ALigand Pharmaceuticals Incorporated · 1997