C09B 31/041
Containing acid groups
Official title: {containing acid groups, e.g. -CO2H, -SO3H, -PO3H2, -OSO3H, -OPO2H2; Salts thereof}
C09B31/041 (Containing acid groups) appears on 9 US grants and 4 published applications in this corpus.
Search patents in C09B- Granted patents
- 9
- Published applications
- 4
- Assignees
- 10
- Inventors
- 24
- Latest grant
- 4 Aug 2020
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
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| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
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| 1996 | 0 | 0 |
| 1997 | 0 | 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 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 1 |
| 2019 | 0 | 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
- Composition4 Aug 2020US 10,731,078 B2Sumitomo Chemical Company, Limited
- Dyes and blends for shading during laundry19 Nov 2013US 8,585,780 B2BASF SE
- Disulfonic phenyl-azo-naphthyl-azo-phenyl alkoxy dyes for polyamides25 Aug 1981US 4,285,864 ACrompton & Knowles Corporation
- New water-insoluble azo dyes24 Mar 1981US 4,257,942 AAziende Colori Nazionali Affini ACNA S.p.A.
- Polyamides dyed with rubine disazo acid dyes and process therefore12 Aug 1980US 4,217,102 AToms River Chemical 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.
- Composition1 Feb 2018US 2018/0030354 A1Sumitomo Chemical Company, Limited
- Manufacture method of polarization and color filter function integration film and liquid crystal display panel1 Jun 2017US 2017/0153496 A1Shenzhen China Star Optoelectronics Technology Co., Ltd.
- Dyes and blends for shading during laundry26 Sep 2013US 2013/0247309 A1BASF SE
Most cited
By later US patents
- Disazo acid compounds containing one sulphonic acid group and one phosphonic or methyl-phosphinic acid group9US 3,947,435 AProduits Chimiques Ugine Kuhlmann · 1976
- Polyamides dyed with rubine disazo acid dyes and process therefore3US 4,217,102 AToms River Chemical Corporation · 1980
- Rubine disazo acid dyes for polyamides2US 4,173,565 AToms River Chemical Corporation · 1979
- New water-insoluble azo dyes2US 4,257,942 AAziende Colori Nazionali Affini ACNA S.p.A. · 1981
- Water-soluble disazo dyestuffs and process for coloring synthetic polyamide fibres with them1US 4,194,883 AHoechst Aktiengesellschaft · 1980