C07C 50/18
Anthraquinones, i.e. c14h8o2
Official title: Anthraquinones, i.e. C14H8O2
C07C50/18 (Anthraquinones, i.e. c14h8o2) appears on 14 US grants and 8 published applications in this corpus.
Search patents in C07C- Granted patents
- 14
- Published applications
- 8
- Assignees
- 13
- Inventors
- 43
- Latest grant
- 4 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 1 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 1 | 1 |
| 2019 | 1 | 0 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
| 2022 | 0 | 0 |
| 2023 | 1 | 1 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Electroactive species and method for electrochemical gas separation4 Nov 2025US 12,458,922 B2Verdox, Inc.
- Senna obtusifolia seed extract and a method for comprehensive development and utilization of Senna obtusifolia seeds23 May 2023US 11,654,378 B2Henan Zhongda Hengyuan Biotechnology Stock Co., Ltd.
- Conductive surface coating based on modified and unmodified particles and method of preparation thereof6 Jul 2021US 11,056,250 B1University of New Brunswick
- Preparation of 2,6- and 2,7-disubstituted anthraquinone derivates12 Mar 2019US 10,227,281 B2BASF SE
- Preparation of 2,6- and 2,7-disubstituted anthraquinone derivatives5 Jun 2018US 9,988,268 B2BASF SE
- Charge transfer complex4 Apr 2024US 2024/0109869 A1Adeka Corporation
- Electroactive species and method for electrochemical gas separation19 Jan 2023US 2023/0012689 A1Verdox, Inc.
- Senna obtusifolia seed extract and a method for comprehensive development and utilization of senna obtusifolia seeds30 Dec 2021US 2021/0402324 A1Henan Zhongda Hengyuan Biotechnology Stock Co., Ltd.
- Preparation of 2,6- and 2,7-disubstituted anthraquinone derivates2 Aug 2018US 2018/0215694 A1BASF SE
- Preparation of 2,6- and 2,7-disubstituted anthraquinone derivatives13 Jul 2017US 2017/0197830 A1BASF SE
Most cited
By later US patents
- Method for preparing anthraquinones13US 5,723,675 AKorea Kumho Petrochemical Co., Ltd. · 1998
- Polycyclic aromatic ring cleavage (PARC) process10US 5,288,390 ASun Company, Inc. (R&M) · 1994
- Multi-chromophoric quencher constructs for use in high sensitivity energy transfer probes6US 8,586,718 B2Applied Biosystems, LLC · 2013
- Process for the purification of high-melting organic products5US 4,141,799 ABayer Aktiengesellschaft · 1979
- Triple ions of 1,2- and 1,4-dicarbonyl compounds and analogs thereof containing nitrogen and containing two strategic oxygen or nitrogen groups and process for producing same3US 4,201,638 AQueen's University at Kingston · 1980