C07D 251/24
To three ring carbon atoms
Official title: to three ring carbon atoms
C07D251/24 (To three ring carbon atoms) appears on 566 US grants and 739 published applications in this corpus.
Search patents in C07D- Granted patents
- 566
- Published applications
- 739
- Assignees
- 184
- Inventors
- 1,407
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 3 | 0 |
| 1996 | 9 | 0 |
| 1997 | 10 | 0 |
| 1998 | 18 | 0 |
| 1999 | 8 | 0 |
| 2000 | 9 | 0 |
| 2001 | 16 | 5 |
| 2002 | 11 | 11 |
| 2003 | 8 | 11 |
| 2004 | 5 | 14 |
| 2005 | 8 | 10 |
| 2006 | 4 | 4 |
| 2007 | 7 | 8 |
| 2008 | 2 | 9 |
| 2009 | 5 | 9 |
| 2010 | 4 | 11 |
| 2011 | 3 | 11 |
| 2012 | 5 | 14 |
| 2013 | 9 | 12 |
| 2014 | 9 | 11 |
| 2015 | 9 | 25 |
| 2016 | 12 | 35 |
| 2017 | 30 | 56 |
| 2018 | 23 | 51 |
| 2019 | 38 | 52 |
| 2020 | 28 | 48 |
| 2021 | 32 | 48 |
| 2022 | 35 | 73 |
| 2023 | 53 | 87 |
| 2024 | 44 | 58 |
| 2025 | 45 | 39 |
| 2026 | 24 | 27 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Compound, material for organic electroluminescent element, organic electroluminescent element and electronic device29 Sep 2026US 12,751,204 B2Idemitsu Kosan Co., Ltd.
- Cyclic azine compound, material for organic light emitting diode, electron transport material for organic light emitting diode, and organic light emitting diode14 Jul 2026US 12,679,821 B2Sagami Chemical Research Institute
- Organic material composition and applications thereof23 Jun 2026US 12,662,472 B2Ningbo Lumilan Advanced Materials Co., Ltd.
- Organometallic compound and light-emitting device including the same9 Jun 2026US 12,649,756 B2Samsung Display Co., Ltd.
- Compound for organic electronic element, organic electronic element using the same, and an electronic device thereof26 May 2026US 12,637,400 B2Duk San Neolux Co., Ltd.
- Ortho-phthalaldehyde-functionalized ultravioletabsorbers and visible chromophores for semi-permanent topical applications1 Oct 2026US 2026/0297038 A1The Regents of the University of Colorado, a body corporate
- Organic electroluminescent element and electronic device1 Oct 2026US 2026/0297107 A1Idemitsu Kosan Co., Ltd.
- Triazine compound and method for producing same27 Aug 2026US 2026/0250255 A1Shin-Etsu Chemical Co., Ltd.
- Nitrogen-containing hetreocycles for organic electroluminescent devices27 Aug 2026US 2026/0255779 A1Merck Patent GmbH
- A process for preparing hydroxyphenyl-1,3,5-triazine compounds20 Aug 2026US 2026/0242344 A1BASF SE
Most cited
By later US patents
- Radiation-sensitive copying composition118US 4,189,323 AHoechst Aktiengesellschaft · 1980
- Electroluminescent (EL) devices80US 6,057,048 AXerox Corporation · 2000
- Electroluminescent (EL) devices68US 6,225,467 B1Xerox Corporation · 2001
- Reactive, non-yellowing triazine compounds useful as UV screening agents for polymers65US 4,826,978 AMilliken Research Corporation · 1989
- UV absorbers65US 5,489,503 ACiba-Geigy Corporation · 1996