C09B 29/0029
The heterocyclic ring containing only nitrogen as heteroatom
Official title: {the heterocyclic ring containing only nitrogen as heteroatom}
C09B29/0029 (The heterocyclic ring containing only nitrogen as heteroatom) appears on 197 US grants and 126 published applications in this corpus.
Search patents in C09B- Granted patents
- 197
- Published applications
- 126
- Assignees
- 73
- Inventors
- 350
- Latest grant
- 2 Apr 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 10 | 0 |
| 1978 | 4 | 0 |
| 1979 | 6 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 7 | 0 |
| 1983 | 5 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 6 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 7 | 0 |
| 1997 | 1 | 0 |
| 1998 | 8 | 0 |
| 1999 | 4 | 0 |
| 2000 | 6 | 0 |
| 2001 | 7 | 1 |
| 2002 | 7 | 7 |
| 2003 | 3 | 11 |
| 2004 | 6 | 6 |
| 2005 | 2 | 3 |
| 2006 | 6 | 7 |
| 2007 | 3 | 4 |
| 2008 | 0 | 9 |
| 2009 | 5 | 8 |
| 2010 | 3 | 8 |
| 2011 | 9 | 18 |
| 2012 | 15 | 10 |
| 2013 | 9 | 4 |
| 2014 | 3 | 6 |
| 2015 | 7 | 4 |
| 2016 | 2 | 5 |
| 2017 | 5 | 3 |
| 2018 | 5 | 5 |
| 2019 | 2 | 1 |
| 2020 | 0 | 2 |
| 2021 | 1 | 1 |
| 2022 | 1 | 2 |
| 2023 | 1 | 1 |
| 2024 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
- C09B 29/0037Containing a five-membered heterocyclic ring with two nitrogen atoms100
- C09B 29/0033Containing a five-membered heterocyclic ring with one nitrogen atom41
- C09B 29/0048Containing a six-membered heterocyclic ring with one nitrogen atom41
- C09B 29/0051Containing a six-membered heterocyclic ring with two nitrogen atoms18
- C09B 29/004Containing a five-membered heterocyclic ring with three nitrogen atoms17
- C09B 29/0044Containing a five-membered heterocyclic ring with four nitrogen atoms0
Recent patents
- Disperse azo dyes, a process for the preparation thereof and the use thereof2 Apr 2024US 11,946,198 B2Huntsman Textile Effects (Switzerland) GmbH
- Heat sensitive transfer recording sheet31 Oct 2023US 11,801,703 B2Canon Kabushiki Kaisha
- Sensor dyes for real-time sensing of metal ions in aqueous environments15 Mar 2022US 11,275,071 B2UWM Research Foundation, Inc.
- Azo compound and black dye composition including the same5 Jan 2021US 10,882,995 B1National Chi Nan University
- Cationic direct dyes3 Dec 2019US 10,494,527 B2BASF SE
- Disperse azo dyes, a process for the preparation thereof and the use thereof16 Mar 2023US 2023/0082859 A1Huntsman Advanced Materials (Switzerland) GmbH
- Laundry detergent31 Mar 2022US 2022/0098520 A1Conopco, Inc., d/b/a UNILEVER
- Laundry detergent31 Mar 2022US 2022/0098525 A1Conopco, Inc., d/b/a UNILEVER
- Azo Compound and Black Dye Composition Including the Same7 Jan 2021US 2021/0002486 A1National Chi Nan University
- Heat sensitive transfer recording sheet31 Dec 2020US 2020/0407572 A1Canon Kabushiki Kaisha
Most cited
By later US patents
- Ink, ink jet recording method and azo compound92US 6,878,196 B2Fuji Photo Film Co., Ltd. · 2005
- Azo dyes derived from 3-amino pyridine in hair dye compositions80US 4,025,301 ASociete Anonyme dite: L'Oreal · 1977
- Azo derivatives or pyridine N-oxide for use in hair dye compositions72US 3,955,918 ASociete Anonyme dite: L'Oreal · 1976
- Newborn's growth adjustable absorbent diaper having variable overlapping and non-overlapping ears69US 5,489,282 AKimberly-Clark Corporation · 1996
- Fluorescent carbamate-modified phthalocyanine pigments46US 5,811,543 ACiba Speciality Chemicals Corporation · 1998