C07C 63/42
Containing three or more condensed rings
Official title: containing three or more {condensed} rings
C07C63/42 (Containing three or more condensed rings) appears on 23 US grants and 17 published applications in this corpus.
Search patents in C07C- Granted patents
- 23
- Published applications
- 17
- Assignees
- 21
- Inventors
- 54
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 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 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 1 |
| 2014 | 1 | 1 |
| 2015 | 1 | 1 |
| 2016 | 2 | 3 |
| 2017 | 1 | 0 |
| 2018 | 0 | 2 |
| 2019 | 1 | 1 |
| 2020 | 1 | 1 |
| 2021 | 4 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Substrate processing apparatus, processing gas concentrating apparatus, and substrate processing method21 Apr 2026US 12,606,910 B2Tokyo Electron Limited
- Resist composition, method of forming resist pattern, compound, and acid diffusion control agent15 Jun 2021US 11,036,132 B2Tokyo Ohka Kogyo.Co., Ltd.
- Method for preparing donepezil pamoate25 May 2021US 11,014,885 B2Shanghai Aobo Pharmtech, Inc., Ltd.
- Electron donor for polyolefin polymerization catalysts and uses thereof11 May 2021US 11,001,650 B2Braskem America, Inc.
- Organic ligand and preparation method thereof, quantum dot structure material, quantum-dot-containing layer, and light emitting diode13 Apr 2021US 10,975,014 B2Boe Technology Group Co., Ltd.
- Novel monomer and chemically recyclable polymer material comprising the same26 Mar 2026US 2026/0085055 A1Korea Institute of Science and Technology
- Core-shell quantum dot, quantum dot light-emitting device, display apparatus and manufacturing method8 May 2025US 2025/0145883 A1Beijing BOE Technology Development Co., Ltd.
- Substrate processing apparatus, processing gas concentrating apparatus, and substrate processing method24 Nov 2022US 2022/0372623 A1Tokyo Electron Limited
- New method for preparing donepezil pamoate19 Mar 2020US 2020/0087256 A1Shanghai Aobo Pharmtech, Inc., Ltd.
- Resist composition, method of forming resist pattern, compound, and acid diffusion control agent4 Jul 2019US 2019/0204735 A1Tokyo Ohka Kogyo.Co., Ltd.
Most cited
By later US patents
- Monoalkali metal salts of perylene-3,4,9,10-tetracarboxylic acid monoanhydride and process for their manufacturing17US 4,501,906 AHoechst Aktiengesellschaft · 1985
- Soluble graphene nanostructures and assemblies therefrom15US 9,410,040 B2Indiana University Research and Technology Corporation · 2016
- Naphthyl or tetrahydronaphthyl-substituted naphthoic acid and derivatives10US 4,454,341 ASRI International · 1984
- Preparation of perylene-3,4-dicarboxylic anhydrides10US 5,981,773 ACiba Specialty Chemicals Corporation · 1999
- Disubstituted maleic anhydride compounds7US 4,596,867 AStandard Oil Company (Indiana) · 1986