D06P 3/3226
Dis-polyazo
Official title: {dis-polyazo}
D06P3/3226 (Dis-polyazo) appears on 27 US grants and 4 published applications in this corpus.
Search patents in D06P- Granted patents
- 27
- Published applications
- 4
- Assignees
- 14
- Inventors
- 64
- Latest grant
- 18 Jul 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 2 |
| 2023 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Cationic cyanuric chloride derivative tanning agent and preparation method thereof18 Jul 2023US 11,702,712 B2Shaanxi University of Science and Technology
- Stable colorant compositions27 Jun 2000US 6,080,209 ABASF SE
- Water-soluble polyazo dyestuffs28 Jan 1997US 5,597,387 AHoechst Aktiengesellschaft
- Process for the treatment of skins, hides or shett materials containing collagen by a dense, pressurized fluid30 Apr 1996US 5,512,058 ACentre Technique Cuir Chaussure Maroquinerie
- Basic disazo compounds containing sulphonic acid groups12 Mar 1996US 5,498,701 ASandoz Ltd.
- Cationic cyanuric chloride derivative tanning agent and preparation method thereof14 Jul 2022US 2022/0220569 A1Shaanxi University of Science and Technology
- Method of dyeing collagen staple fiber10 Mar 2022US 2022/0071355 A1ECCO Sko A/S
- Azo dyes11 Feb 2010US 2010/0031452 A1Université Catholique De Louvain
- Anionic azo dyes and the metal complexes thereof ofr colouring leather15 Feb 2007US 2007/0033749 A1BASF SE
Most cited
By later US patents
- Process for dyeing leather with an aqueous bath containing sulfonated carbon black and black anionic dye41US 5,152,801 ACiba-Geigy Corporation · 1992
- Process for the treatment of skins, hides or shett materials containing collagen by a dense, pressurized fluid22US 5,512,058 ACentre Technique Cuir Chaussure Maroquinerie · 1996
- Trisazo black dyes from 2-(4'-aminophenylazo)-7-amino-1-naphthol-3-sulfonic acid14US 4,737,240 ACiba-Geigy Corporation · 1988
- Sulfo group-containing basic azo compounds having a central 1,3,5-triazine ring and two terminal 1-hydroxynaphthyl-2 groups and 1:1 and 1:2 metal complexes therof12US 4,742,160 ASandoz Ltd. · 1988
- Metallized polyazo dyes derived from a coupling component obtained by acidic condensation of formaldehyde with at least one phenolic compound9US 4,123,428 ASandoz Ltd. · 1978