C09B 62/82
Azo dyes
C09B62/82 (Azo dyes) appears on 22 US grants and 4 published applications in this corpus.
Search patents in C09B- Granted patents
- 22
- Published applications
- 4
- Assignees
- 14
- Inventors
- 50
- Latest grant
- 17 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 1 |
| 2016 | 1 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Ophthalmic devices17 Feb 2026US 12,552,883 B2Bausch + Lomb Ireland Limited
- Particles for electrophoretic displays8 Nov 2016US 9,487,611 B2Merck Patent GmbH
- Fibre-reactive dyes, their preparation and their use24 Nov 2015US 9,193,870 B2Huntsman International LLC
- Bunte salt azo dye compound4 Feb 2003US 6,515,114 B1Clariant Finance (BVI) Limited
- Process of dyeing with disazo dyes containing a fluorosulphonyl group and use thereof21 Jul 1998US 5,782,934 AZeneca Limited
- Ophthalmic devices14 May 2026US 2026/0132232 A1Bausch + Lomb Ireland Limited
- Ophthalmic devices30 Mar 2023US 2023/0096315 A1Bausch + Lomb Ireland Limited
- Fibre-Reactive Dyes, Their Preparation and Their Use9 Apr 2015US 2015/0096131 A1Huntsman International LLC
- Particles for electrophoretic displays15 Aug 2013US 2013/0208344 A1Merck Patent GmbH
Most cited
By later US patents
- Disazo dyes having a 6-amino or substituted triazinylamino-1-hydroxynaphthalene-3-sulfonic acid coupling component radical33US 4,083,840 ASandoz Ltd. · 1978
- Disazo compounds containing an alkanolamine substituted triazine component16US 3,945,990 ASumitomo Chemical Company, Limited · 1976
- Quaternary basic azodyestuffs containing a propenyl amino radical11US 4,082,740 AHoechst Aktiengesellschaft · 1978
- Monoazo dyes which are free from water-solubilizing groups and which contain a fluorosulphonyl group and process for colouring polyamides and polyester materials therewith11US 5,739,299 AZeneca Limited · 1998
- Chromium mixed complex dyestuffs of phenyl-azo-pyrazole components10US 4,234,479 ABayer Aktiengesellschaft · 1980