C09B 5/00
Dyes with an anthracene nucleus condensed with one or more heterocyclic rings
Official title: Dyes with an anthracene nucleus condensed with one or more heterocyclic rings with or without carbocyclic rings
C09B5/00 (Dyes with an anthracene nucleus condensed with one or more heterocyclic rings) appears on 543 US grants and 372 published applications in this corpus.
Search patents in C09B- Granted patents
- 543
- Published applications
- 372
- Assignees
- 229
- Inventors
- 1,130
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 20 | 0 |
| 1977 | 12 | 0 |
| 1978 | 9 | 0 |
| 1979 | 7 | 0 |
| 1980 | 15 | 0 |
| 1981 | 10 | 0 |
| 1982 | 11 | 0 |
| 1983 | 13 | 0 |
| 1984 | 7 | 0 |
| 1985 | 12 | 0 |
| 1986 | 7 | 0 |
| 1987 | 7 | 0 |
| 1988 | 9 | 0 |
| 1989 | 4 | 0 |
| 1990 | 5 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 7 | 0 |
| 1995 | 7 | 0 |
| 1996 | 6 | 0 |
| 1997 | 4 | 0 |
| 1998 | 13 | 0 |
| 1999 | 10 | 0 |
| 2000 | 20 | 0 |
| 2001 | 13 | 3 |
| 2002 | 12 | 5 |
| 2003 | 7 | 9 |
| 2004 | 5 | 14 |
| 2005 | 11 | 15 |
| 2006 | 13 | 20 |
| 2007 | 11 | 16 |
| 2008 | 10 | 31 |
| 2009 | 9 | 23 |
| 2010 | 26 | 42 |
| 2011 | 14 | 23 |
| 2012 | 16 | 14 |
| 2013 | 33 | 16 |
| 2014 | 12 | 20 |
| 2015 | 24 | 13 |
| 2016 | 18 | 18 |
| 2017 | 9 | 22 |
| 2018 | 15 | 11 |
| 2019 | 13 | 18 |
| 2020 | 7 | 12 |
| 2021 | 13 | 6 |
| 2022 | 11 | 7 |
| 2023 | 4 | 6 |
| 2024 | 4 | 3 |
| 2025 | 3 | 1 |
| 2026 | 5 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C09B 5/62Cyclic imides or amidines of peri-dicarboxylic acids of the anthracene, benzanthrene, or304
- C09B 5/02The heterocyclic ring being only condensed in peri position138
- C09B 5/24The heterocyclic rings being only condensed with an anthraquinone nucleus in 1-294
- C09B 5/002The heterocyclic rings being condensed in peri position and in 1-2 or16
Recent patents
- Simultaneously dyeing and flame-retardant finishing method for polyester based textile6 Oct 2026US 12,753,549 B2Daikyo Chemical Co., Ltd.
- Optical device with transmission inhibition plateau in blue spectral range28 Jul 2026US 12,693,551 B2
- Detecting compounds in airborne particles using ion exchange19 May 2026US 12,631,586 B2Gentex Corporation
- Plant cultivation method12 May 2026US 12,622,432 B2BASF SE
- Compound, photosensitive fluorescent resin composition comprising same, color conversion film prepared using same, backlight unit, and display device24 Mar 2026US 12,584,020 B2LG Chem.Ltd.
- Disperse dyes for dyeing polyester fibres8 Oct 2026US 2026/0308841 A1University of Leeds
- Optical device with transmission inhibition plateau in blue spectral range1 Oct 2026US 2026/0299319 A1ColorBoost Inc.
- Novel anthraquinone-based nir absorbers26 Feb 2026US 2026/0055115 A1BASF SE
- Compounds and their applications15 Jan 2026US 2026/0015655 A1Sfc Co., Ltd.
- Novel fluorescent compound, and lipid bilayer dyeing method and endocytosis detection method using said compound25 Dec 2025US 2025/0388756 A1Dojindo Laboratories
Most cited
By later US patents
- Dichroic light polarizers162US 6,049,428 AOptiva, Inc. · 2000
- Method and materials for thermostable and lightfast dichroic light polarizers82US 5,739,296 ARussian Technology Group · 1998
- Fluorescent aryloxy-substituted perylene-3,4,9,10-tetracarboxylic acid diimides74US 4,845,223 ABASF SE · 1989
- Concentration of light over a particular area, and novel perylene-3,4,9,10-tetracarboxylic acid diimides63US 4,667,036 ABASF SE · 1987
- Method and apparatus for displaying indications of instructions in previously recorded messages63US 4,677,501 ADictaphone Corporation · 1987