C07D 251/22
To two ring carbon atoms
Official title: to two ring carbon atoms
C07D251/22 (To two ring carbon atoms) appears on 158 US grants and 111 published applications in this corpus.
Search patents in C07D- Granted patents
- 158
- Published applications
- 111
- Assignees
- 83
- Inventors
- 482
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 4 | 0 |
| 1984 | 8 | 0 |
| 1985 | 5 | 0 |
| 1986 | 5 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 6 | 0 |
| 1993 | 5 | 0 |
| 1994 | 6 | 0 |
| 1995 | 3 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 8 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 3 |
| 2002 | 2 | 1 |
| 2003 | 1 | 7 |
| 2004 | 4 | 4 |
| 2005 | 4 | 3 |
| 2006 | 2 | 3 |
| 2007 | 3 | 3 |
| 2008 | 0 | 2 |
| 2009 | 3 | 4 |
| 2010 | 1 | 7 |
| 2011 | 3 | 2 |
| 2012 | 3 | 4 |
| 2013 | 1 | 3 |
| 2014 | 3 | 5 |
| 2015 | 5 | 10 |
| 2016 | 4 | 4 |
| 2017 | 6 | 4 |
| 2018 | 4 | 3 |
| 2019 | 3 | 6 |
| 2020 | 2 | 2 |
| 2021 | 3 | 4 |
| 2022 | 2 | 4 |
| 2023 | 3 | 10 |
| 2024 | 2 | 6 |
| 2025 | 6 | 3 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process for preparing N,N′-bis(2,2,6,6-tetramethylpiperidin-4-yl)hexane-1,6-diamine25 Aug 2026US 12,715,845 B2BASF SE
- Materials for organic electroluminescent devices13 Jan 2026US 12,522,591 B2Merck Patent GmbH
- Hydroxytriazine compounds and pharmaceutical use thereof9 Dec 2025US 12,492,182 B2Japan Tobacco Inc.
- Compound and an organic semiconducting layer, an organic electronic device, a display device and a lighting device comprising the same2 Dec 2025US 12,486,247 B2Novaled GmbH
- Triazine compounds and pharmaceutical use thereof26 Aug 2025US 12,398,111 B2Japan Tobacco Inc.
- Multi-photoprotective compounds and uses thereof20 Aug 2026US 2026/0240740 A1Skinosive
- Organic Light Emitting Diode, Device Comprising the Same as and Compound for Use Therein16 Jul 2026US 2026/0206485 A1Novaled GmbH
- Light-emitting device including organic compound, electronic apparatus and electronic device including the light-emitting device, and the organic compound14 May 2026US 2026/0136827 A1Samsung Display Co., Ltd.
- Compound and an organic semiconducting layer, an organic electronic device, a display device and a lighting device comprising the same12 Mar 2026US 2026/0070883 A1Novaled GmbH
- Composition for organic electronic devices18 Dec 2025US 2025/0386665 A1Merck Patent GmbH
Most cited
By later US patents
- Medicaments for the treatment of disorders of lipometabolism and their use138US 4,405,644 ABayer Aktiengesellschaft · 1983
- Herbicidal sulfonamides124US 4,127,405 AE. I. Du Pont de Nemours and Company · 1978
- Herbicidal sulfonamides102US 4,169,719 AE. I. Du Pont de Nemours and Company · 1979
- Halomethyl-1,3,5-triazines containing a sensitizer moiety63US 5,187,045 AMinnesota Mining and Manufacturing Company · 1993
- Halomethyl-1,3,5-triazines containing a sensitizer moiety61US 5,034,526 AMinnesota Mining and Manufacturing Company · 1991