C09C 1/26
Iron blues
C09C1/26 (Iron blues) appears on 16 US grants and 11 published applications in this corpus.
Search patents in C09C- Granted patents
- 16
- Published applications
- 11
- Assignees
- 17
- Inventors
- 61
- Latest grant
- 14 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 2 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 0 | 2 |
| 2023 | 0 | 0 |
| 2024 | 1 | 2 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Method for regulating particle size of Prussian white14 Jan 2025US 12,195,347 B2Guangdong Brunp Recycling Technology Co., Ltd.
- Three-dimensional printing with redox-active inorganic salts27 Aug 2024US 12,070,899 B2Hewlett-Packard Development Company, L. P.
- Inorganic pigment compositions comprising surface-modified nanoparticles, and methods of making30 Jun 2015US 9,067,782 B23M Innovative Properties Company
- Method for production of iron ioxide pigments16 Nov 2004US 6,818,052 B1Biopigment Ltd.
- Hydrophilic treatment of pigments2 Feb 1999US 5,865,885 AVideojet Systems International, Inc.
- Powders having improved dispersability and use thereof in compositions and articles of manufacture11 Sep 2025US 2025/0281372 A1Color Techniques, Inc.
- Method for regulating particle size of prussian white8 Aug 2024US 2024/0262702 A1Guangdong Brunp Recycling Technology Co., Ltd.
- Aqueous blend of pigment and an alkoxylated amine14 Mar 2024US 2024/0084156 A1
- Three-dimensional printing with redox-active inorganic salts1 Sep 2022US 2022/0274330 A1Hewlett-Packard Development Company, L. P.
- Pigments containing cellulose11 Aug 2022US 2022/0251393 A1Nissan Chemical Corporation
Most cited
By later US patents
- Process for the production of ferrocyanide blue41US 4,046,861 ADeutsche Gold- und Silber-Scheideanstalt vormals Roessler · 1977
- Iron blue pigment, process for making the same and use40US 4,378,995 ADegussa AG · 1983
- Process for the production of Berlin blue20US 3,985,571 ADeutsche Gold- und Silber-Scheideanstalt vormals Roessler · 1976
- Iron blue nacreous coated pigments9US 4,047,969 AThe Mearl Corporation · 1977
- Dispersible Berlin blue pigment8US 4,545,821 AMerck Patent GmbH · 1985