C09B 45/04
Azo compounds in general
C09B45/04 (Azo compounds in general) appears on 26 US grants and 8 published applications in this corpus.
Search patents in C09B- Granted patents
- 26
- Published applications
- 8
- Assignees
- 18
- Inventors
- 54
- Latest grant
- 12 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Azo iron complex dye, ink composition containing same, and method for producing azo iron complex dye12 Aug 2025US 12,384,920 B2Orient Chemical Industries, Ltd.
- Near-infrared absorbing and color compensation film composition for electronic devices25 Mar 2014US 8,679,725 B2Cheil Industries Inc.
- Near-infrared absorbing and color compensation film composition for electronic devices3 May 2011US 7,935,475 B2Cheil Industries Inc.
- Metal complex colorant comprising azo moiety29 Apr 2008US 7,364,597 B2Samsung Electronics Co., Ltd.
- Metal chelated dyestuff for inkjet recording and aqueous inkjet recording liquid using the same29 Jun 2004US 6,755,903 B2Mitsubishi Chemical Corporation
- Azo iron complex dye, ink composition containing same, and method for producing azo iron complex dye12 Dec 2024US 2024/0409746 A1Orient Chemical Industries, Ltd.
- Resin composition, film, optical filter, solid-state imaging element, and image display device25 May 2023US 2023/0159752 A1FUJIFILM Corporation
- Photosensitive Resin Composition and Color Filter Using the Same28 Jun 2012US 2012/0161087 A1Cheil Industries Inc.
- Near-infrared absorbing and color compensation film composition for electronic devices25 Aug 2011US 2011/0204303 A1Cheil Industries Inc.
- Metal Complex Diazo-Compound and Inks Containing Them13 Mar 2008US 2008/0063800 A1
Most cited
By later US patents
- Metal chelated dyestuff for inkjet recording and aqueous inkjet recording liquid using the same11US 6,755,903 B2Mitsubishi Chemical Corporation · 2004
- Betainic azo dyestuffs containing cobalt in complex union with a colorless, tridentate ligand10US 4,008,211 ACiba-Geigy Corporation · 1977
- 1:1 Chromiferous complex azo compounds having a bidentate chelating group and a monofunctional neutral ligand10US 4,123,429 AProduits Chimiques Ugine Kuhlmann · 1978
- Photographic products and processes employing nondiffusible azo dye-releasing compounds10US 4,148,643 AEastman Kodak Company · 1979
- Chromium mixed complex dyestuffs of phenyl-azo-pyrazole components10US 4,234,479 ABayer Aktiengesellschaft · 1980