C07C 255/52
To carbon atoms of six-membered aromatic rings being part of condensed ring
Official title: to carbon atoms of six-membered aromatic rings being part of condensed ring systems
C07C255/52 (To carbon atoms of six-membered aromatic rings being part of condensed ring) appears on 75 US grants and 90 published applications in this corpus.
Search patents in C07C- Granted patents
- 75
- Published applications
- 90
- Assignees
- 48
- Inventors
- 269
- Latest grant
- 26 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 1 |
| 2003 | 1 | 4 |
| 2004 | 3 | 0 |
| 2005 | 1 | 2 |
| 2006 | 1 | 4 |
| 2007 | 2 | 0 |
| 2008 | 1 | 5 |
| 2009 | 2 | 3 |
| 2010 | 2 | 3 |
| 2011 | 2 | 3 |
| 2012 | 2 | 3 |
| 2013 | 2 | 4 |
| 2014 | 2 | 4 |
| 2015 | 3 | 5 |
| 2016 | 6 | 7 |
| 2017 | 5 | 9 |
| 2018 | 2 | 2 |
| 2019 | 4 | 2 |
| 2020 | 2 | 6 |
| 2021 | 3 | 2 |
| 2022 | 5 | 3 |
| 2023 | 2 | 5 |
| 2024 | 4 | 6 |
| 2025 | 1 | 4 |
| 2026 | 0 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Light-emitting material, compound, long-persistent phosphor and light-emitting element26 Aug 2025US 12,402,532 B2Kyulux, Inc.
- Organic molecules for optoelectronic devices31 Dec 2024US 12,180,131 B2Samsung Display Co., Ltd.
- Organic compound and organic light-emitting device24 Dec 2024US 12,172,941 B2Canon Kabushiki Kaisha
- Tetralin and tetrahydroquinoline compounds as inhibitors of HIF-2alpha1 Oct 2024US 12,103,907 B2Arcus Biosciences, Inc.
- P-type dopant and organic light emitting diode9 Jan 2024US 11,871,663 B2Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
- 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.
- Light-emitting device including condensed cyclic compound, electronic apparatus and electronic device each including the light-emitting device, and the condensed cyclic compound7 May 2026US 2026/0130108 A1Samsung Display Co., Ltd.
- Compound, light-emitting device including same, and electronic apparatus and electronic equipment each including same30 Apr 2026US 2026/0123276 A1Samsung Display Co., Ltd.
- Light-emitting material, compound, long-persistent phosphor and light-emitting element13 Nov 2025US 2025/0351724 A1Kyulux, Inc.
- Tetralin and tetrahydroquinoline compounds as inhibitors of hif-2alpha3 Jul 2025US 2025/0214930 A1Arcus Biosciences, Inc.
Most cited
By later US patents
- Ring-substituted 2-amino-1,2,3,4-tetra-hydronaphthalenes34US 5,389,687 AEli Lilly and Company · 1995
- Cyanated perylene compounds25US 9,919,999 B2BASF SE · 2018
- Electrophotographic photosensitive member and image forming process20US 5,102,757 AFuji Xerox Co., Ltd. · 1992
- Benzochrysene derivative and organic electroluminescence device using the same14US 8,222,637 B2Idemitsu Kosan Co., Ltd. · 2012
- Fluorinated anthracenes, and their use in liquid-crystal mixtures12US 6,682,785 B2Clariant Finance (BVI) Limited · 2004