C09B 1/02
Hydroxy-anthraquinones
Official title: Hydroxy-anthraquinones; Ethers or esters thereof {(C09B1/007 takes precedence)}
C09B1/02 (Hydroxy-anthraquinones) appears on 64 US grants and 29 published applications in this corpus.
Search patents in C09B- Granted patents
- 64
- Published applications
- 29
- Assignees
- 49
- Inventors
- 150
- Latest grant
- 28 Mar 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 5 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 5 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 1 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 3 |
| 2009 | 1 | 3 |
| 2010 | 5 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 2 |
| 2013 | 0 | 0 |
| 2014 | 2 | 2 |
| 2015 | 1 | 4 |
| 2016 | 4 | 1 |
| 2017 | 2 | 1 |
| 2018 | 2 | 1 |
| 2019 | 3 | 4 |
| 2020 | 1 | 2 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Organic materials with special optical effects28 Mar 2023US 11,613,513 B2Centre National de la Recherche Scientifique (CNRS)
- Leuco compounds1 Feb 2022US 11,236,235 B2Milliken & Company
- Aqueous ink and aqueous dye dispersion for aqueous ink25 Feb 2020US 10,570,302 B2Sanyo Color Works, Ltd.
- PGAM1 inhibitors and methods related thereto5 Nov 2019US 10,464,890 B2Emory University
- Microcrystal exfoliation by UV light irradiation16 Apr 2019US 10,259,941 B1King Abdullah International Medical Research Center
- Anthraquinonic derivatives and their use as colouring agents7 Oct 2021US 2021/0309860 A1Pili
- Coloring composition and color filter3 Sep 2020US 2020/0278608 A1DIC Corporation
- PGAM1 Inhibitors and Methods Related Thereto23 Jan 2020US 2020/0024230 A1Emory University
- Organic Materials with Special Optical Effects7 Nov 2019US 2019/0337885 A1Centre National de la Recherche Scientifique (CNRS)
- Leuco compounds18 Apr 2019US 2019/0112488 A1Milliken & Company
Most cited
By later US patents
- Anthraquinone and anthracene derivatives as inhibitors of the cell-adhesion molecules of the immune system43US 5,412,123 AGlycomed Incorporated · 1995
- Liquid crystals having pleochroic dyes41US 4,363,743 ASiemens Aktiengesellschaft · 1982
- Liquid crystal compositions including pleochroic dye33US 4,232,950 AMinnesota Mining and Manufacturing Company · 1980
- Anthraquinone compounds useful in photographic processes24US 4,110,355 APolaroid Corporation · 1978
- Liquid crystal compositions containing pleochroic dye24US 4,232,949 AMinnesota Mining and Manufacturing Company · 1980