C09B 29/3617
Containing a six-membered heterocyclic with only one nitrogen as heteroatom
Official title: {containing a six-membered heterocyclic with only one nitrogen as heteroatom}
C09B29/3617 (Containing a six-membered heterocyclic with only one nitrogen as heteroatom) appears on 280 US grants and 102 published applications in this corpus.
Search patents in C09B- Granted patents
- 280
- Published applications
- 102
- Assignees
- 80
- Inventors
- 443
- Latest grant
- 26 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 20 | 0 |
| 1977 | 24 | 0 |
| 1978 | 13 | 0 |
| 1979 | 9 | 0 |
| 1980 | 10 | 0 |
| 1981 | 22 | 0 |
| 1982 | 9 | 0 |
| 1983 | 7 | 0 |
| 1984 | 4 | 0 |
| 1985 | 11 | 0 |
| 1986 | 7 | 0 |
| 1987 | 4 | 0 |
| 1988 | 5 | 0 |
| 1989 | 4 | 0 |
| 1990 | 6 | 0 |
| 1991 | 6 | 0 |
| 1992 | 5 | 0 |
| 1993 | 1 | 0 |
| 1994 | 8 | 0 |
| 1995 | 7 | 0 |
| 1996 | 3 | 0 |
| 1997 | 5 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 0 |
| 2003 | 3 | 1 |
| 2004 | 1 | 7 |
| 2005 | 2 | 1 |
| 2006 | 6 | 6 |
| 2007 | 5 | 5 |
| 2008 | 0 | 6 |
| 2009 | 5 | 11 |
| 2010 | 7 | 13 |
| 2011 | 6 | 8 |
| 2012 | 8 | 2 |
| 2013 | 2 | 3 |
| 2014 | 1 | 5 |
| 2015 | 4 | 7 |
| 2016 | 4 | 8 |
| 2017 | 6 | 6 |
| 2018 | 10 | 4 |
| 2019 | 3 | 2 |
| 2020 | 2 | 1 |
| 2021 | 1 | 2 |
| 2022 | 2 | 0 |
| 2023 | 0 | 2 |
| 2024 | 1 | 0 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- 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.
- 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.
- Colorant mixtures9 Aug 2022US 11,407,912 B2Huntsman International LLC
- Sensor dyes for real-time sensing of metal ions in aqueous environments15 Mar 2022US 11,275,071 B2UWM Research Foundation, Inc.
- Disperse azo dyes, a process for the preparation thereof and the use thereof2 Mar 2021US 10,934,435 B2Huntsman International LLC
- 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
- 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.
- Monoazo dichroic dye compound, polarizing plate composition comprising same, polarizing plate formed therefrom, and optical device comprising same26 Oct 2023US 2023/0340331 A1LG Chem.Ltd.
- Colorant Mixtures6 May 2021US 2021/0130631 A1Huntsman Advanced Materials (Switzerland) GmbH
- Monoazo dyes with cyclic amine as fluorescence quenchers18 Mar 2021US 2021/0079225 A1Enzo Biochem, Inc.
Most cited
By later US patents
- Azo pyridone colorants103US 6,590,082 B1Xerox Corporation · 2003
- 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
- Coloring compound and yellow toner containing the coloring compound59US 7,833,685 B2Canon Kabushiki Kaisha · 2010
- Pigment compositions41US 4,310,359 AToyo Ink Manufacturing Co., Ltd. · 1982
- Coloring compound, yellow toner, sheet for heat-sensitive transfer recording, and ink41US 8,211,606 B2Canon Kabushiki Kaisha · 2012