C09B 45/24
Disazo or polyazo compounds
C09B45/24 (Disazo or polyazo compounds) appears on 127 US grants and 51 published applications in this corpus.
Search patents in C09B- Granted patents
- 127
- Published applications
- 51
- Assignees
- 38
- Inventors
- 180
- Latest grant
- 12 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 5 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 5 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 8 | 0 |
| 1986 | 3 | 0 |
| 1987 | 5 | 0 |
| 1988 | 2 | 0 |
| 1989 | 7 | 0 |
| 1990 | 1 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 5 | 0 |
| 1995 | 2 | 0 |
| 1996 | 5 | 0 |
| 1997 | 11 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 2 |
| 2003 | 1 | 4 |
| 2004 | 6 | 6 |
| 2005 | 3 | 10 |
| 2006 | 8 | 4 |
| 2007 | 5 | 5 |
| 2008 | 1 | 0 |
| 2009 | 2 | 1 |
| 2010 | 0 | 2 |
| 2011 | 0 | 3 |
| 2012 | 1 | 0 |
| 2013 | 2 | 0 |
| 2014 | 0 | 5 |
| 2015 | 2 | 0 |
| 2016 | 0 | 3 |
| 2017 | 0 | 1 |
| 2018 | 1 | 1 |
| 2019 | 4 | 0 |
| 2020 | 0 | 1 |
| 2021 | 1 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 2 |
| 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.
- Structure, method for producing structure, composition for forming absorption layer, solid-state imaging element, and image display device19 Oct 2021US 11,152,413 B2FUJIFILM Corporation
- Detailing agent for three-dimensional (3D) printing27 Aug 2019US 10,392,512 B2Hewlett-Packard Development Company, L. P.
- Achromatic dye-based polarization element, and polarization plate26 Feb 2019US 10,215,902 B2Nippon Kayaku Kabushiki Kaisha
- Achromatic dye-based highly-transmissive polarization element, and polarization plate19 Feb 2019US 10,209,417 B2Nippon Kayaku Kabushiki Kaisha
- Azo iron complex dye, ink composition containing same, and method for producing azo iron complex dye12 Dec 2024US 2024/0409746 A1Orient Chemical Industries, Ltd.
- Metal complex dyes for inkjet printing20 Jun 2024US 2024/0199881 A1Videojet Technologies Inc.
- Structure, method for producing structure, composition for forming absorption layer, solid-state imaging element, and image display device16 Apr 2020US 2020/0119071 A1FUJIFILM Corporation
- Detailing agent for three-dimensional (3d) printing25 Jan 2018US 2018/0022923 A1Hewlett-Packard Development Company, L. P.
- Achromatic Polarizing Plate With High-Transmissivity And High-Degree Of Polarization1 Jun 2017US 2017/0153361 A1Nippon Kayaku Kabushiki Kaisha
Most cited
By later US patents
- Water-soluble azo dyes and polarizing films using the dyes24US 5,318,856 AMitsui Toatsu Chemicals, Inc. · 1994
- 1:2-chromium complex dyes for tanned leather18US 4,820,309 ASandoz Ltd. · 1989
- Dye type polarizing plate16US 6,790,490 B1Nippon Kayaku Kabushiki Kaisha · 2004
- Azo compound and a polarizing film containing the same14US 5,700,296 ASumitomo Chemical Company, Limited · 1997
- Dye-containing light-polarizing film13US 5,310,509 ASumitomo Chemical Company, Limited · 1994