C09B 51/00
Nitro or nitroso dyes
C09B51/00 (Nitro or nitroso dyes) appears on 86 US grants and 31 published applications in this corpus.
Search patents in C09B- Granted patents
- 86
- Published applications
- 31
- Assignees
- 44
- Inventors
- 178
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 17 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 3 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 5 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 1 |
| 2002 | 0 | 1 |
| 2003 | 1 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 1 |
| 2009 | 0 | 1 |
| 2010 | 1 | 1 |
| 2011 | 0 | 2 |
| 2012 | 1 | 1 |
| 2013 | 1 | 1 |
| 2014 | 1 | 3 |
| 2015 | 2 | 2 |
| 2016 | 3 | 2 |
| 2017 | 1 | 0 |
| 2018 | 2 | 0 |
| 2019 | 1 | 2 |
| 2020 | 0 | 2 |
| 2021 | 0 | 0 |
| 2022 | 0 | 2 |
| 2023 | 1 | 1 |
| 2024 | 0 | 2 |
| 2025 | 2 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Simultaneously dyeing and flame-retardant finishing method for polyester based textile6 Oct 2026US 12,753,549 B2Daikyo Chemical Co., Ltd.
- Materials for organic electroluminescent devices30 Sep 2025US 12,433,160 B2Merck Patent GmbH
- Small tunable fluorophores for the detection and imaging of biomolecules16 Sep 2025US 12,415,926 B2The University Court of the University of Edinburgh
- Stilbene-based compound or salt thereof, and polarizing film, polarizing plate, and display device31 Oct 2023US 11,802,208 B2Nippon Kayaku Kabushiki Kaisha
- Non-aqueous inkjet orange ink composition and ink set using the same20 Aug 2019US 10,385,225 B2Sakata Inx Corporation
- Disperse dyes for dyeing polyester fibres8 Oct 2026US 2026/0308841 A1University of Leeds
- Fluorescent probes for magl20 Aug 2026US 2026/0241039 A1Hoffmann-La Roche Inc.
- Photosensitive surface treating agent, laminate, pattern formation substrate, transistor, pattern forming method and method of producing transistor5 Jun 2025US 2025/0180990 A1Nikon Corporation
- Probe for Hydrogen Sulfide Detection, Method for Manufacturing Same, and Composition for Hydrogen Sulfide Detection, Comprising Same16 May 2024US 2024/0158693 A1Korea Institute of Ocean Science & Technology
- Materials for organic electroluminescent devices14 Mar 2024US 2024/0090327 A1Merck Patent GmbH
Most cited
By later US patents
- Multilayer analytical element88US 4,066,403 AEastman Kodak Company · 1978
- Method for producing lightfast disperse dyestuffs containing a build-in photostabilizer [molecule] compound55US 4,902,787 ANorth Carolina State University · 1990
- Dyeing composition containing halogenated 2-nitroanilines36US 4,845,293 AL'oreal · 1989
- 2- and 5-Aminoalkylamino anthraquinone dyes useful as basic dyes in coloring hair33US 4,226,784 AL'oreal · 1980
- Nonlinear optical media of organosilicon crosslinked polymer33US 5,714,304 AHercules Incorporated · 1998