C09B 69/045
Of anionic azo dyes
Official title: {of anionic azo dyes}
C09B69/045 (Of anionic azo dyes) appears on 55 US grants and 40 published applications in this corpus.
Search patents in C09B- Granted patents
- 55
- Published applications
- 40
- Assignees
- 40
- Inventors
- 186
- Latest grant
- 23 Sep 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 2 |
| 2003 | 3 | 2 |
| 2004 | 2 | 1 |
| 2005 | 0 | 2 |
| 2006 | 1 | 3 |
| 2007 | 2 | 5 |
| 2008 | 2 | 4 |
| 2009 | 2 | 3 |
| 2010 | 1 | 10 |
| 2011 | 1 | 1 |
| 2012 | 2 | 0 |
| 2013 | 3 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 1 |
| 2018 | 1 | 0 |
| 2019 | 1 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Organic ammonium salts with traceability and detergent dispersant properties to liquid fuels and processes for their synthesis23 Sep 2025US 12,421,186 B2Instituto Mexicano Del Petroleo
- Storage-stable dye solutions27 Aug 2019US 10,392,514 B2Archroma IP GmbH
- Anionic direct dye having a tetraalkylammonium counterion, dyeing composition comprising them and method for dyeing keratinous fibres starting from these dyes15 May 2018US 9,968,534 B2L'oreal
- Water-resistant polarizing film, process for producing water-resistant polarizing film, and image display device15 Oct 2013US 8,559,106 B2Nitto Denko Corporation
- Optical information recording medium and azo metal complex dye12 Mar 2013US 8,394,481 B2FUJIFILM Corporation
- Organic ammonium salts with traceability and detergent dispersant properties to liquid fuels and processes for their synthesis30 Oct 2025US 2025/0333374 A1Instituto Mexicano Del Petroleo
- Organic ammonium salts with traceability and detergent dispersant properties to liquid fuels and processes for their synthesis13 Jun 2024US 2024/0190812 A1Instituto Mexicano Del Petroleo
- Enhanced fluorescence readout and reduced inhibition for nucleic acid amplification tests25 Apr 2019US 2019/0119737 A1The Regents of the University of California
- Storage-stable dye solutions26 Jan 2017US 2017/0022366 A1Archroma IP GmbH
- Methine dyes with large organic counter anion for dye sensitized solar cells2 Jun 2016US 2016/0155575 A1BASF SE
Most cited
By later US patents
- Process for the preparation of concentrated stable liquid dye solutions of CI Direct Yellow 11 utilizing an extended surface silica filter aid during a desalting procedure55US 4,617,380 ACiba-Geigy Corporation · 1986
- Bis(perfluorosulfonyl)methane salts, and a process for preparing same33US 5,446,134 ACentre National De La Recherche Scientifique · 1995
- Magenta inks comprising copper complex azo dyes based on 1-naphthol-di- or tri-sulfonic acids19US 6,521,032 B1Ciba Specialty Chemicals Corporation · 2003
- Fluidizing agents17US 6,641,655 B1Avecia Limited · 2003
- Amine salts of azo dyestuffs of the pyridone series15US 4,359,418 ACiba-Geigy Corporation · 1982