C09B 29/331
Containing acid groups
Official title: {containing acid groups, e.g. COOH, SO3H, PO3H2, OSO3H2, OPO2H2; salts thereof}
C09B29/331 (Containing acid groups) appears on 22 US grants and 12 published applications in this corpus.
Search patents in C09B- Granted patents
- 22
- Published applications
- 12
- Assignees
- 18
- Inventors
- 44
- Latest grant
- 7 Feb 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 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 | 1 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 2 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 3 |
| 2011 | 3 | 0 |
| 2012 | 0 | 2 |
| 2013 | 0 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 1 |
| 2020 | 1 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 0 |
| 2023 | 1 | 0 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Inkjet ink composition7 Feb 2023US 11,572,481 B2Hewlett-Packard Development Company, L. P.
- Pigment composition production method13 Oct 2020US 10,800,922 B2Kao Corporation
- Non-aqueous pigment dispersions using dispersion synergists28 Oct 2014US 8,871,015 B2Agfa Graphics NV
- Nanosized particles of benzimidazolone pigments10 May 2011US 7,938,903 B2National Research Council of Canada
- Nanosized particles of benzimidazolone pigments15 Mar 2011US 7,905,954 B2National Research Council of Canada
- Pigment composition, colorant, and liquid ink9 Oct 2025US 2025/0313700 A1DIC Corporation
- Inkjet ink composition16 Apr 2020US 2020/0115569 A1Hewlett-Packard Development Company, L. P.
- Pigment composition production method28 Feb 2019US 2019/0062559 A1Kao Corporation
- Color filter and image display apparatus having the same16 Aug 2012US 2012/0205599 A1FUJIFILM Corporation
- Non-aqueous pigment dispersions using dispersion synergists9 Aug 2012US 2012/0200650 A1Agfa-Gevaert
Most cited
By later US patents
- Compounds useful as pigments containing one or more 2,2,6,6-tetraalkylpiperidine groups11US 4,866,113 ASandoz Ltd. · 1989
- Methods of making nanosized particles of benzimidazolone pigments11US 7,883,574 B2Xerox Corporation · 2011
- Nanosized particles of benzimidazolone pigments10US 7,905,954 B2National Research Council of Canada · 2011
- Monoazo compounds, process for their manufacture and their use7US 4,312,807 AHoechst Aktiengesellschaft · 1982
- Nanosized particles of benzimidazolone pigments7US 7,938,903 B2National Research Council of Canada · 2011