C07C 211/61
With at least one of the condensed ring systems formed by three
Official title: with at least one of the condensed ring systems formed by three or more rings
C07C211/61 (With at least one of the condensed ring systems formed by three) appears on 616 US grants and 909 published applications in this corpus.
Search patents in C07C- Granted patents
- 616
- Published applications
- 909
- Assignees
- 175
- Inventors
- 1,311
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 7 | 0 |
| 1997 | 4 | 0 |
| 1998 | 7 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 1 |
| 2002 | 3 | 4 |
| 2003 | 6 | 14 |
| 2004 | 10 | 13 |
| 2005 | 5 | 17 |
| 2006 | 7 | 20 |
| 2007 | 7 | 30 |
| 2008 | 12 | 37 |
| 2009 | 7 | 36 |
| 2010 | 20 | 29 |
| 2011 | 24 | 34 |
| 2012 | 25 | 28 |
| 2013 | 18 | 31 |
| 2014 | 20 | 34 |
| 2015 | 34 | 38 |
| 2016 | 26 | 45 |
| 2017 | 31 | 52 |
| 2018 | 41 | 53 |
| 2019 | 42 | 50 |
| 2020 | 35 | 54 |
| 2021 | 36 | 46 |
| 2022 | 34 | 53 |
| 2023 | 43 | 72 |
| 2024 | 38 | 49 |
| 2025 | 29 | 48 |
| 2026 | 24 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Aromatic amine derivative, and organic electroluminescent element using same6 Oct 2026US 12,753,145 B2Idemitsu Kosan Co., Ltd.
- Compound, coating composition comprising same, organic light-emitting device using same, and manufacturing method therefor8 Sep 2026US 12,729,312 B2LG Chem.Ltd.
- Heterocyclic compound and organic light emitting device comprising same1 Sep 2026US 12,727,378 B2Lt Materials Co., Ltd.
- Organic electroluminescent compound, a plurality of host materials, and organic electroluminescent device comprising the same28 Jul 2026US 12,696,683 B2DuPont Specialty Materials Korea Ltd.
- Light-emitting device and electronic apparatus including the same14 Jul 2026US 12,685,012 B2Samsung Display Co., Ltd.
- Organic electroluminescent compound, a plurality of host materials, and organic electroluminescent device comprising the same8 Oct 2026US 2026/0314256 A1
- Light-emitting device, light-emitting apparatus, electronic apparatus, and lighting device17 Sep 2026US 2026/0282738 A1Semiconductor Energy Laboratory Co.Ltd.
- Light emitting device and amine compound for the same10 Sep 2026US 2026/0265211 A1Samsung Display Co., Ltd.
- Compound, Light-Emitting Device, Light-Emitting Apparatus, Electronic Device, and Lighting Device27 Aug 2026US 2026/0250571 A1Semiconductor Energy Laboratory Co.Ltd.
- Organic compound, electronic element and electronic apparatus using the same20 Aug 2026US 2026/0247792 A1Shaanxi Lighte Optoelectronics Material Co., Ltd.
Most cited
By later US patents
- Azlactone-related dopants in the emissive layer of an OLED141US 6,030,715 AThe Trustees of Princeton University · 2000
- Organic electroluminecence device134US 10,435,350 B2Idemitsu Kosan Co., Ltd. · 2019
- Tetraaryl benzidines128US 5,639,914 AHodogaya Chemical Co., Ltd. · 1997
- Amine compound and electro-luminescence device comprising same122US 5,707,747 AHodogaya Chemical Co., Ltd. · 1998
- Organic electroluminescent device having an electrically insulating charge generation layer106US 8,080,934 B2Rohm Co., Ltd. · 2011