C09B 31/047
Containing acid groups
Official title: containing acid groups, e.g. —CO2H, —SO3H, —PO3H2, —OSO3H, —OPO2H2; Salts thereof
C09B31/047 (Containing acid groups) appears on 23 US grants and 5 published applications in this corpus.
Search patents in C09B- Granted patents
- 23
- Published applications
- 5
- Assignees
- 14
- Inventors
- 45
- Latest grant
- 24 Mar 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 1 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 1 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Water-resistant organic thin-film, method for producing water-resistant organic thin-film, and image display device including water-resistant organic thin-film24 Mar 2020US 10,598,829 B2Nitto Denko Corporation
- Dichroic azo compound and composition containing the same24 Dec 2019US 10,513,612 B2Sumitomo Chemical Company, Limited
- Azo compound and salts thereof, as well as dye-based polarization films and polarizing plates comprising the same2 Jul 2013US 8,477,268 B2Nippon Kayaku Kabushiki Kaisha
- Acid dyes20 Mar 2012US 8,137,416 B2Clariant Finance (BVI) Limited
- Disazo dyes containing two carbonylamino groups processes for their preparation and their use25 Nov 1997US 5,691,459 ACiba-Geigy Corporation
- Substituted diazenylanilines as fluorescence quencher and use thereof27 Feb 2025US 2025/0066866 A1Council of Scientific and Industrial Research An Indian Registered Body Incoporated Under the Regn.
- Compound and composition containing same15 Mar 2018US 2018/0072890 A1Sumitomo Chemical Company, Limited
- Water-resistant organic thin-film, method for producing water-resistant organic thin-film, and image display device including water-resistant organic thin-film21 May 2015US 2015/0141629 A1Nitto Denko Corporation
- Azo Compound And Salts Thereof, As Well As Dye-Based Polarization Films And Polarizing Plates Comprising The Same7 Jul 2011US 2011/0164208 A1Nippon Kayaku Kabushiki Kaisha
- Acid dyes29 Oct 2009US 2009/0269553 A1Clariant Finance (BVI) Limited
Most cited
By later US patents
- Process for the preparation of concentrated solutions of anionic dyestuffs5US 4,087,245 ABayer Aktiengesellschaft · 1978
- Azo compound and salts thereof, as well as dye-based polarization films and polarizing plates comprising the same5US 8,477,268 B2Nippon Kayaku Kabushiki Kaisha · 2013
- Monoazo dyes containing a 3-sulfoalkanoylamino or 3-sulfoalkylsulfonylaminoaniline coupling component4US 4,994,563 ACiba-Geigy Corporation · 1991
- Synthetic polyamide fibres colored with acid azobenzene dyestuffs, containing a N-alkyl (or substituted alkyl)-n-sulphophenoxyalkylamino radical in the para position to the azo linkage3US 4,063,881 AProduits Chimiques Ugine Kuhlmann · 1977
- Water-soluble acid azo dye3US 4,187,218 AMontedison S.p.A. · 1980