C07C 15/38
Containing four rings
Official title: containing four rings
C07C15/38 (Containing four rings) appears on 151 US grants and 230 published applications in this corpus.
Search patents in C07C- Granted patents
- 151
- Published applications
- 230
- Assignees
- 71
- Inventors
- 438
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 1 | 9 |
| 2006 | 2 | 6 |
| 2007 | 1 | 9 |
| 2008 | 3 | 17 |
| 2009 | 3 | 7 |
| 2010 | 5 | 14 |
| 2011 | 8 | 13 |
| 2012 | 10 | 17 |
| 2013 | 11 | 10 |
| 2014 | 10 | 14 |
| 2015 | 17 | 11 |
| 2016 | 8 | 1 |
| 2017 | 9 | 9 |
| 2018 | 7 | 8 |
| 2019 | 9 | 10 |
| 2020 | 5 | 8 |
| 2021 | 8 | 5 |
| 2022 | 1 | 19 |
| 2023 | 8 | 21 |
| 2024 | 6 | 8 |
| 2025 | 3 | 5 |
| 2026 | 13 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Organic molecules for use in light-emitting devices29 Sep 2026US 12,747,210 B2Samsung Display Co., Ltd.
- Compound, organic electroluminescent element and electronic device28 Jul 2026US 12,692,212 B2Idemitsu Kosan Co., Ltd.
- Organic electroluminescent element, compound, and electronic equipment28 Jul 2026US 12,692,435 B2Idemitsu Kosan Co., Ltd.
- Organic electroluminescent materials and devices16 Jun 2026US 12,655,166 B2Universal Display Corporation
- Organometallic compound and light-emitting device including the same9 Jun 2026US 12,649,756 B2Samsung Display Co., Ltd.
- Organic electroluminescent element and electronic device1 Oct 2026US 2026/0297107 A1Idemitsu Kosan Co., Ltd.
- Separation method for polycyclic aromatic hydrocarbons30 Jul 2026US 2026/0217630 A1Taiyuan University of Technology
- Plurality of host materials, an organic electroluminescent compound, and organic electroluminescent device comprising the same25 Jun 2026US 2026/0182242 A1
- Organic light-emitting device18 Jun 2026US 2026/0173638 A1Canon Kabushiki Kaisha
- Light-receiving device and light-emitting and light-receiving apparatus16 Apr 2026US 2026/0107631 A1Semiconductor Energy Laboratory Co.Ltd.
Most cited
By later US patents
- Benzo-fused thiophene or benzo-fused furan compounds comprising a triphenylene group49US 8,367,850 B2Universal Display Corporation · 2013
- Chrysene derivative and organic electroluminescent device using the same39US 8,221,907 B2Idemitsu Kosan Co., Ltd. · 2012
- Single triphenylene chromophores in phosphorescent light emitting diodes39US 8,652,652 B2Universal Display Corporation · 2014
- Organic electroluminescence device and organic light emitting medium33US 7,651,786 B2Idemitsu Kosan Co., Ltd. · 2010
- Benzo-fused thiophene / triphenylene hybrid materials31US 8,822,708 B2Universal Display Corporation · 2014