G03G 9/091
Azo dyes
Official title: {Azo dyes}
G03G9/091 (Azo dyes) appears on 329 US grants and 270 published applications in this corpus.
Search patents in G03G- Granted patents
- 329
- Published applications
- 270
- Assignees
- 83
- Inventors
- 788
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 7 | 0 |
| 1987 | 2 | 0 |
| 1988 | 5 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 7 | 0 |
| 1994 | 5 | 0 |
| 1995 | 3 | 0 |
| 1996 | 7 | 0 |
| 1997 | 7 | 0 |
| 1998 | 16 | 0 |
| 1999 | 9 | 0 |
| 2000 | 15 | 0 |
| 2001 | 5 | 3 |
| 2002 | 6 | 10 |
| 2003 | 7 | 13 |
| 2004 | 6 | 7 |
| 2005 | 4 | 15 |
| 2006 | 7 | 14 |
| 2007 | 16 | 10 |
| 2008 | 10 | 11 |
| 2009 | 3 | 10 |
| 2010 | 6 | 15 |
| 2011 | 6 | 7 |
| 2012 | 12 | 13 |
| 2013 | 13 | 12 |
| 2014 | 11 | 10 |
| 2015 | 8 | 18 |
| 2016 | 10 | 12 |
| 2017 | 21 | 16 |
| 2018 | 18 | 18 |
| 2019 | 8 | 12 |
| 2020 | 16 | 13 |
| 2021 | 5 | 5 |
| 2022 | 5 | 5 |
| 2023 | 4 | 5 |
| 2024 | 1 | 6 |
| 2025 | 4 | 1 |
| 2026 | 5 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Yellow toner19 May 2026US 12,631,980 B2Canon Kabushiki Kaisha
- Pigment composition, coloring composition, paint, ink, ink set, printed article, and packaging material21 Apr 2026US 12,606,707 B2artience Co., Ltd.
- Electrostatic charge image developing green toner, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method7 Apr 2026US 12,596,313 B2FUJIFILM Business Innovation Corp.
- Electrostatic charge image developing toner, electrostatic charge image developer, toner cartridge, process cartridge, image forming apparatus, and image forming method7 Apr 2026US 12,596,314 B2FUJIFILM Business Innovation Corp.
- Toner20 Jan 2026US 12,529,973 B2Canon Kabushiki Kaisha
- Electrostatic charge image developing toner, electrostatic charge image developer, toner cartridge, process cartridge, and image forming apparatus1 Oct 2026US 2026/0299450 A1FUJIFILM Business Innovation Corp.
- Electrostatic charge image developing toner set, electrostatic charge image developer set, toner cartridge set, process cartridge, and image forming apparatus1 Oct 2026US 2026/0299451 A1FUJIFILM Business Innovation Corp.
- Image forming apparatus and image forming method17 Sep 2026US 2026/0277128 A1FUJIFILM Business Innovation Corp.
- Positively-chargeable toner for developing electrostatic images, toner set and image forming method3 Sep 2026US 2026/0259516 A1Zeon Corporation
- Toner for developing electrostatic charge image, method for producing toner for developing electrostatic charge image, electrostatic charge image developer, toner cartridge, process cartridge, and image forming apparatus27 Aug 2026US 2026/0251993 A1FUJIFILM Business Innovation Corp.
Most cited
By later US patents
- Ferromagnetic toner containing water-soluble or water-solubilizable resin(s)73US 4,105,572 AE. I. Du Pont de Nemours and Company · 1978
- Coloring compound and yellow toner containing the coloring compound59US 7,833,685 B2Canon Kabushiki Kaisha · 2010
- AZO compound, and pigment dispersant, pigment composition, pigment dispersion and toner including the azo compound56US 8,377,616 B2Canon Kabushiki Kaisha · 2013
- Toner55US 8,916,319 B2Canon Kabushiki Kaisha · 2014
- Toner including compound having bisazo skeleton53US 8,815,484 B2Canon Kabushiki Kaisha · 2014