C09B 29/00
Monoazo dyes prepared by diazotising and coupling
C09B29/00 (Monoazo dyes prepared by diazotising and coupling) appears on 1,602 US grants and 566 published applications in this corpus.
Search patents in C09B- Granted patents
- 1,602
- Published applications
- 566
- Assignees
- 330
- Inventors
- 2,140
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 81 | 0 |
| 1977 | 101 | 0 |
| 1978 | 84 | 0 |
| 1979 | 54 | 0 |
| 1980 | 73 | 0 |
| 1981 | 89 | 0 |
| 1982 | 50 | 0 |
| 1983 | 65 | 0 |
| 1984 | 44 | 0 |
| 1985 | 45 | 0 |
| 1986 | 37 | 0 |
| 1987 | 26 | 0 |
| 1988 | 30 | 0 |
| 1989 | 32 | 0 |
| 1990 | 35 | 0 |
| 1991 | 31 | 0 |
| 1992 | 29 | 0 |
| 1993 | 25 | 0 |
| 1994 | 33 | 0 |
| 1995 | 26 | 0 |
| 1996 | 39 | 0 |
| 1997 | 27 | 0 |
| 1998 | 33 | 0 |
| 1999 | 23 | 0 |
| 2000 | 22 | 0 |
| 2001 | 14 | 3 |
| 2002 | 14 | 17 |
| 2003 | 20 | 22 |
| 2004 | 17 | 25 |
| 2005 | 10 | 21 |
| 2006 | 25 | 24 |
| 2007 | 17 | 21 |
| 2008 | 10 | 34 |
| 2009 | 16 | 32 |
| 2010 | 25 | 52 |
| 2011 | 40 | 41 |
| 2012 | 34 | 27 |
| 2013 | 26 | 19 |
| 2014 | 15 | 20 |
| 2015 | 21 | 40 |
| 2016 | 22 | 32 |
| 2017 | 31 | 27 |
| 2018 | 27 | 23 |
| 2019 | 16 | 21 |
| 2020 | 20 | 15 |
| 2021 | 12 | 16 |
| 2022 | 10 | 8 |
| 2023 | 6 | 11 |
| 2024 | 7 | 6 |
| 2025 | 11 | 6 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- C09B 29/34From other coupling components598
- C09B 29/06From coupling components containing amino as the only directing group504
- C09B 29/0025From diazotized amino heterocyclic compounds474
- C09B 29/0003From diazotized anilines330
- C09B 29/10From coupling components containing hydroxy as the only directing group226
- C09B 29/24From coupling components containing both hydroxyl and amino directing groups142
- C09B 29/32From coupling components containing a reactive methylene group119
- C09B 29/0014From diazotized aminonaphthalene35
All 10 subgroupsShow fewer
Recent patents
- Device for producing azo compound16 Jun 2026US 12,655,528 B2Dongjin Innochem Co., Ltd.
- Azo pigment, ink, paint, colorant for plastics, colored molded article, colorant for stationery and writing materials, printing agent, toner, dispersion and resist for color filters, and cosmetic material21 Apr 2026US 12,606,717 B2DIC Corporation
- Isomeric mixture of reactive dyes and their use for the dyeing or printing of textile fibre materials18 Nov 2025US 12,473,432 B2Archroma (Switzerland) GmbH
- Mixture of reactive dyes and their use for the dyeing or printing of textile fibre materials21 Oct 2025US 12,448,519 B2Archroma (Switzerland) GmbH
- Optical sheet and optical component14 Oct 2025US 12,442,954 B2Sumitomo Bakelite Co., Ltd.
- Disperse dyes for dyeing polyester fibres8 Oct 2026US 2026/0308841 A1University of Leeds
- New class of disperse azo dyes, a process for the preparation thereof and the use thereof13 Aug 2026US 2026/0234404 A1Archroma (Switzerland) GmbH
- Coloring composition for color filters and method of manufacturing the same, and color filter for image sensors manufactured using the coloring composition for color filters29 Jan 2026US 2026/0028483 A1Samsung Electronics Co., Ltd.
- 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
- Pigment composition, colorant, and liquid ink9 Oct 2025US 2025/0313700 A1DIC Corporation
Most cited
By later US patents
- Azo pyridone colorants103US 6,590,082 B1Xerox Corporation · 2003
- Ink, ink jet recording method and azo compound92US 6,878,196 B2Fuji Photo Film Co., Ltd. · 2005
- Method for manufacturing a semiconductor device and suppressing the generation of bulk microdefects near the substrate surface layer87US 4,931,405 AKabushiki Kaisha Toshiba · 1990
- 2-Hydroxy-5-phenylazobenzoic acid derivatives and method of treating ulcerative colitis therewith84US 4,412,992 ABiorex Laboratories Limited · 1983
- Colorant compounds84US 7,381,831 B1Xerox Corporation · 2008