C09B 29/36
From heterocyclic compounds
Official title: from heterocyclic compounds
C09B29/36 (From heterocyclic compounds) appears on 592 US grants and 248 published applications in this corpus.
Search patents in C09B- Granted patents
- 592
- Published applications
- 248
- Assignees
- 152
- Inventors
- 942
- Latest grant
- 7 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 29 | 0 |
| 1977 | 41 | 0 |
| 1978 | 30 | 0 |
| 1979 | 21 | 0 |
| 1980 | 22 | 0 |
| 1981 | 36 | 0 |
| 1982 | 18 | 0 |
| 1983 | 18 | 0 |
| 1984 | 13 | 0 |
| 1985 | 20 | 0 |
| 1986 | 15 | 0 |
| 1987 | 5 | 0 |
| 1988 | 9 | 0 |
| 1989 | 11 | 0 |
| 1990 | 10 | 0 |
| 1991 | 14 | 0 |
| 1992 | 8 | 0 |
| 1993 | 5 | 0 |
| 1994 | 13 | 0 |
| 1995 | 12 | 0 |
| 1996 | 13 | 0 |
| 1997 | 10 | 0 |
| 1998 | 11 | 0 |
| 1999 | 7 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 2 |
| 2002 | 4 | 10 |
| 2003 | 8 | 13 |
| 2004 | 7 | 12 |
| 2005 | 6 | 11 |
| 2006 | 17 | 11 |
| 2007 | 9 | 10 |
| 2008 | 4 | 17 |
| 2009 | 9 | 18 |
| 2010 | 11 | 26 |
| 2011 | 18 | 18 |
| 2012 | 17 | 11 |
| 2013 | 5 | 7 |
| 2014 | 5 | 9 |
| 2015 | 12 | 16 |
| 2016 | 7 | 11 |
| 2017 | 13 | 13 |
| 2018 | 17 | 8 |
| 2019 | 5 | 6 |
| 2020 | 5 | 4 |
| 2021 | 5 | 6 |
| 2022 | 4 | 1 |
| 2023 | 1 | 4 |
| 2024 | 4 | 3 |
| 2025 | 3 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
- C09B 29/3604Containing only a nitrogen as heteroatom508
- C09B 29/3691Containing nitrogen and sulfur as heteroatom37
- C09B 29/3686Containing nitrogen and oxygen as heteroatom30
- C09B 29/3682Containing only sulfur as heteroatom11
- C09B 29/3695Containing other heterocyclic compounds10
- C09B 29/3678Containing only oxygen as heteroatom4
Recent patents
- Composition comprising hueing agent7 Oct 2025US 12,435,299 B2Milliken & Company
- Monoazo dichroic dye compound, polarizing plate composition comprising same, polarizing plate formed therefrom, and optical device comprising same26 Aug 2025US 12,398,326 B2LG Chem.Ltd.
- Heterocyclic red azo colorants for seed treatment applications29 Apr 2025US 12,286,412 B2Milliken & Company
- Monoazo dichroic dye compound, polarizing plate composition comprising same, polarizing plate formed therefrom, and optical device comprising same10 Dec 2024US 12,163,084 B2LG Chem.Ltd.
- Compound, composition for anisotropic dye films including the compound, anisotropic dye film, and optical element30 Jul 2024US 12,049,583 B2Mitsubishi Chemical Corporation
- Light absorption filter, optical filter, manufacturing method for optical filter, organic electroluminescent display device, inorganic electroluminescent display device, and liquid crystal display device17 Apr 2025US 2025/0123432 A1FUJIFILM Corporation
- Heterocyclic red azo colorants for seed treatment applications31 Oct 2024US 2024/0360090 A1Milliken & Company
- Composition Comprising Hueing Agent12 Sep 2024US 2024/0301330 A1Milliken & Company
- Coloring composition, film, color filter, display device, and structural body29 Aug 2024US 2024/0287310 A1FUJIFILM Corporation
- Monoazo dichroic dye compound, polarizing plate composition comprising same, polarizing plate formed therefrom, and optical device comprising same9 Nov 2023US 2023/0357638 A1LG Chem.Ltd.
Most cited
By later US patents
- Azo pyridone colorants103US 6,590,082 B1Xerox Corporation · 2003
- Ink, ink jet recording method and azo compound92US 6,878,196 B2Fuji Photo Film Co., Ltd. · 2005
- Method for manufacturing a semiconductor device and suppressing the generation of bulk microdefects near the substrate surface layer87US 4,931,405 AKabushiki Kaisha Toshiba · 1990
- Near-infrared reflecting composite pigments76US 6,521,038 B2Dainichiseika Color & Chemicals Mfg. Co., Ltd. · 2003
- Dichroic azo dyes59US 5,589,100 AHercules Incorporated · 1996