C07D 221/12
Phenanthridines
C07D221/12 (Phenanthridines) appears on 200 US grants and 131 published applications in this corpus.
Search patents in C07D- Granted patents
- 200
- Published applications
- 131
- Assignees
- 124
- Inventors
- 509
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 4 | 0 |
| 1983 | 5 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 2 | 0 |
| 1994 | 9 | 0 |
| 1995 | 2 | 0 |
| 1996 | 5 | 0 |
| 1997 | 9 | 0 |
| 1998 | 18 | 0 |
| 1999 | 8 | 0 |
| 2000 | 10 | 0 |
| 2001 | 9 | 0 |
| 2002 | 12 | 9 |
| 2003 | 10 | 4 |
| 2004 | 3 | 5 |
| 2005 | 2 | 7 |
| 2006 | 2 | 7 |
| 2007 | 2 | 7 |
| 2008 | 5 | 7 |
| 2009 | 5 | 7 |
| 2010 | 0 | 5 |
| 2011 | 2 | 6 |
| 2012 | 6 | 4 |
| 2013 | 3 | 2 |
| 2014 | 5 | 4 |
| 2015 | 7 | 7 |
| 2016 | 3 | 7 |
| 2017 | 6 | 3 |
| 2018 | 2 | 4 |
| 2019 | 1 | 1 |
| 2020 | 3 | 6 |
| 2021 | 3 | 7 |
| 2022 | 1 | 4 |
| 2023 | 3 | 3 |
| 2024 | 3 | 6 |
| 2025 | 6 | 6 |
| 2026 | 3 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Naphthalimide sulfonate derivative, and photoacid generator and photoresist composition each comprising same12 May 2026US 12,625,427 B2Samyang Corporation
- Nucleic acid modifying reagents and uses thereof10 Mar 2026US 12,571,031 B2Promega Corporation
- Compound or salt thereof17 Feb 2026US 12,551,578 B2Hamamatsu Photonics K.K.
- Polymerizable fused tricyclic compounds as absorbers of UV and visible light30 Dec 2025US 12,509,428 B2Johnson & Johnson Vision Care, Inc.
- Urolithin derivatives and methods of use thereof18 Nov 2025US 12,473,269 B2Vandria SA
- N-(n-aminoalkyl)phenanthridiunium series of chloride-sensitive fluorophores and methods of use thereof10 Sep 2026US 2026/0265202 A1The General Hospital Corporation
- Urolithin derivatives and methods of use thereof14 May 2026US 2026/0132117 A1Vandria SA
- Polymerizable fused tricyclic compounds as absorbers of uv and visible light5 Mar 2026US 2026/0062386 A1Johnson & Johnson Vision Care, Inc.
- Photocatalysts, preparation and use thereof4 Dec 2025US 2025/0367649 A1The Royal Institution for the Advancement of Learning/Mcgill University
- Haloalkyl sulfonanilide compound and herbicide containing the same18 Sep 2025US 2025/0289788 A1Sds Biotech K. K.
Most cited
By later US patents
- Chemiluminescent acridinium salts117US 5,468,646 AAbbott Laboratories · 1995
- DNA complexes with dyes designed for energy transfer as fluorescent markers110US 5,401,847 AThe Regents of the University of California · 1995
- DNA complexes with dyes designed for energy transfer as fluorescent markers91US 5,646,264 AThe Regents of the University of California · 1997
- Chemiluminescent acridinium salts82US 5,543,524 AAbbott Laboratories · 1996
- Di-n-heterocyclic compounds, methods, and compositions for inhibiting parp activity78US 6,121,278 AGuilford Pharmaceuticals Inc. · 2000