C09B 3/58
Benzanthraquinones
C09B3/58 (Benzanthraquinones) appears on 9 US grants and 4 published applications in this corpus.
Search patents in C09B- Granted patents
- 9
- Published applications
- 4
- Assignees
- 5
- Inventors
- 14
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 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 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 0 | 0 |
| 2021 | 1 | 1 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Deuterated fluorophores17 Feb 2026US 12,552,938 B2Howard Hughes Medical Institute
- Deuterated fluorophores17 Oct 2023US 11,787,946 B2Howard Hughes Medical Institute
- Deuterated fluorophores17 Aug 2021US 11,091,643 B2Howard Hughes Medical Institute
- Anthracene-containing derivative, production process thereof and organic electroluminescent display device24 Jul 2018US 10,032,988 B2Boe Technology Group Co., Ltd.
- Photochromic naphthacenequinones, process for their preparation and the use thereof18 Apr 1995US 5,407,885 ACiba-Geigy Corporation
- Deuterated Fluorophores15 Feb 2024US 2024/0052169 A1Howard Hughes Medical Institute
- Deuterated fluorophores11 Nov 2021US 2021/0347994 A1Howard Hughes Medical Institute
- Deuterated fluorophores5 Dec 2019US 2019/0367736 A1Howard Hughes Medical Institute
- Anthracene-containing derivative, production process thereof and organic electroluminescent display device3 Mar 2016US 2016/0064668 A1Boe Technology Group Co., Ltd.
Most cited
By later US patents
- Photochromic naphthacenequinones, process for their preparation and the use thereof17US 5,407,885 ACiba-Geigy Corporation · 1995
- Photochromic naphthacenequinones, process for their preparation and the use thereof15US 5,208,354 ACiba-Geigy Corporation · 1993
- Coloring of the organic materials with naphthacenequinones14US 4,036,805 AMitsui Toatsu Chemicals, Inc. · 1977
- Coloring resins by mixing naphthacenequinones therewith3US 4,033,923 AMitsui Toatsu Chemicals, Inc. · 1977
- Deuterated fluorophores1US 11,091,643 B2Howard Hughes Medical Institute · 2021