C09B 62/447
Azo dyes
C09B62/447 (Azo dyes) appears on 42 US grants and 2 published applications in this corpus.
Search patents in C09B- Granted patents
- 42
- Published applications
- 2
- Assignees
- 12
- Inventors
- 46
- Latest grant
- 17 Sep 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 6 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 1 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 1 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Reactive dyes and preparation methods thereof17 Sep 2024US 12,091,552 B2Nantong University
- Quenching dye for labeling biomolecules and method for preparing the same6 Dec 2016US 9,512,315 B2Dkc Corporation
- Reactive colorants, mixtures of reactive colorants and production and use thereof25 Mar 2003US 6,537,332 B1Ciba Speciality Chemicals Corporation
- Azo dyes, their preparation and their use12 Dec 2000US 6,160,101 ACiba Specialty Chemicals Corporation
- Mixtures of reactive dyes and their use15 Dec 1998US 5,849,887 ACiba Specialty Chemicals Corporation
Most cited
By later US patents
- Non-bleeding indicator and dyes therefor149US 4,029,598 AE. Merck A. G. · 1977
- Non-bleeding indicators and dyes therefor used in pH determination process31US 4,029,597 AE. Merck A. G. · 1977
- Monoazo and disazo dyes containing at least one sulfo group and at least two basic or cationic groups24US 4,273,707 ASandoz Ltd. · 1981
- Monoazo dyes containing at least one sulfo group and at least two basic or cationic groups21US 4,363,761 ASandoz Ltd. · 1982
- Heavy metal complex azo dyes containing a benzothiophene-1,1-dioxide, 2,1-benzothiazine-2,2-dioxide, 1,4-benzothiazine-1,1-dioxide or thienopyridine-1,1-dioxide coupling component20US 4,960,870 ACiba-Geigy Corporation · 1990