C09B 62/4411
Azo dyes
Official title: {Azo dyes}
C09B62/4411 (Azo dyes) appears on 223 US grants and 73 published applications in this corpus.
Search patents in C09B- Granted patents
- 223
- Published applications
- 73
- Assignees
- 38
- Inventors
- 243
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 3 | 0 |
| 1984 | 4 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 8 | 0 |
| 1988 | 6 | 0 |
| 1989 | 13 | 0 |
| 1990 | 7 | 0 |
| 1991 | 10 | 0 |
| 1992 | 13 | 0 |
| 1993 | 7 | 0 |
| 1994 | 12 | 0 |
| 1995 | 13 | 0 |
| 1996 | 12 | 0 |
| 1997 | 9 | 0 |
| 1998 | 18 | 0 |
| 1999 | 9 | 0 |
| 2000 | 5 | 0 |
| 2001 | 8 | 2 |
| 2002 | 6 | 4 |
| 2003 | 8 | 8 |
| 2004 | 4 | 12 |
| 2005 | 8 | 7 |
| 2006 | 7 | 6 |
| 2007 | 1 | 4 |
| 2008 | 4 | 10 |
| 2009 | 4 | 1 |
| 2010 | 2 | 5 |
| 2011 | 4 | 3 |
| 2012 | 0 | 4 |
| 2013 | 4 | 0 |
| 2014 | 1 | 2 |
| 2015 | 2 | 3 |
| 2016 | 2 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Mixture of reactive dyes and their use for the dyeing or printing of textile fibre materials21 Oct 2025US 12,448,519 B2Archroma (Switzerland) GmbH
- Method for continuously preparing water-soluble azo dye by coupling a nebulizer with a pipeline19 Jul 2016US 9,394,445 B2Dalian University of Technology
- Reactive dyes, their preparation and their use24 May 2016US 9,346,958 B2Huntsman International LLC
- Fibre-reactive dyes, their preparation and their use24 Nov 2015US 9,193,870 B2Huntsman International LLC
- Fiber-reactive copper complex disazo dyes23 Jun 2015US 9,062,208 B2DyStar Colours Distribution GmbH
- Mixture Of Reactive Dyes And Their Use For The Dyeing Or Printing Of Textile Fibre Materials1 Jun 2023US 2023/0167304 A1Archroma (Switzerland) GmbH
- Mixtures of reactive dyes and their use for the dying or printing fibre materials29 Mar 2018US 2018/0086918 A1Huntsman Advanced Materials (Switzerland) GmbH
- Reactive Dyes, Their Preparation and Their Use28 May 2015US 2015/0143639 A1Huntsman International LLC
- Fibre-Reactive Dyes, Their Preparation and Their Use9 Apr 2015US 2015/0096131 A1Huntsman International LLC
- Method for continuously preparing water-soluble azo dye by coupling a nebulizer with a pipeline12 Mar 2015US 2015/0073132 A1Dalian University of Technology
Most cited
By later US patents
- Reactive red dye having both monochlorotriazinyl- and vinylsulfone-type reactive groups26US 4,341,699 ASumitomo Chemical Company, Limited · 1982
- Reactive yellow dye having both monochlorotriazinyl and vinylsulfone type reactive groups25US 4,378,313 ASumitomo Chemical Company, Limited · 1983
- Ink compositions containing disazo dyes21US 5,820,661 AZeneca Limited · 1998
- Water-soluble disazo dyestuffs19US 4,323,497 AHoechst Aktiengesellschaft · 1982
- Reactive disazo compounds18US 4,425,270 ANippon Kayaku Kabushiki Kaisha · 1984