C09C 1/22
Compounds of iron
Official title: Compounds of iron {(C09C1/0009, C09C1/0015, C09C1/0078 take precedence)}
C09C1/22 (Compounds of iron) appears on 592 US grants and 527 published applications in this corpus.
Search patents in C09C- Granted patents
- 592
- Published applications
- 527
- Assignees
- 357
- Inventors
- 1,537
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 8 | 0 |
| 1977 | 6 | 0 |
| 1978 | 6 | 0 |
| 1979 | 11 | 0 |
| 1980 | 9 | 0 |
| 1981 | 11 | 0 |
| 1982 | 4 | 0 |
| 1983 | 11 | 0 |
| 1984 | 7 | 0 |
| 1985 | 4 | 0 |
| 1986 | 6 | 0 |
| 1987 | 11 | 0 |
| 1988 | 6 | 0 |
| 1989 | 7 | 0 |
| 1990 | 14 | 0 |
| 1991 | 16 | 0 |
| 1992 | 9 | 0 |
| 1993 | 11 | 0 |
| 1994 | 7 | 0 |
| 1995 | 5 | 0 |
| 1996 | 9 | 0 |
| 1997 | 7 | 0 |
| 1998 | 14 | 0 |
| 1999 | 10 | 0 |
| 2000 | 25 | 0 |
| 2001 | 17 | 4 |
| 2002 | 10 | 17 |
| 2003 | 15 | 27 |
| 2004 | 21 | 16 |
| 2005 | 11 | 25 |
| 2006 | 8 | 24 |
| 2007 | 15 | 32 |
| 2008 | 18 | 24 |
| 2009 | 6 | 19 |
| 2010 | 16 | 43 |
| 2011 | 7 | 19 |
| 2012 | 15 | 26 |
| 2013 | 16 | 22 |
| 2014 | 16 | 26 |
| 2015 | 19 | 23 |
| 2016 | 16 | 15 |
| 2017 | 14 | 24 |
| 2018 | 11 | 25 |
| 2019 | 21 | 31 |
| 2020 | 19 | 16 |
| 2021 | 21 | 17 |
| 2022 | 18 | 17 |
| 2023 | 11 | 10 |
| 2024 | 6 | 14 |
| 2025 | 7 | 7 |
| 2026 | 4 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method and system for multicolor photonic pigments from magneticially assembled nanorod arrays29 Sep 2026US 12,748,324 B2The Regents of the University of California
- Mesoporous silica wrapped nanoparticle composite material, preparation method thereof, and use thereof18 Aug 2026US 12,709,548 B2Wuyi University
- Magnetically tunable plasmon coupling of nanoshells enabled by space-free confined growth28 Jul 2026US 12,692,398 B2The Regents of the University of California
- Method for the production of metal oxide pigment composite of controlled agglomerating properties and respective product3 Feb 2026US 12,540,246 B2Prodotti Gianni S.R.L.
- Resin-coated metal powder, method for producing same and aqueous coating composition using same16 Dec 2025US 12,497,518 B2Shin-Etsu Chemical Co., Ltd.
- Infrared radiation-absorbing material fine particle dispersion liquid and infrared radiation-absorbing material fine particle dispersion body2 Jul 2026US 2026/0184887 A1Sumitomo Metal Mining Co., Ltd.
- Colorants with low levels of manganese oxide5 Feb 2026US 2026/0035567 A1BASF SE
- Security ink composition and machine-readable security feature derived therefrom22 Jan 2026US 2026/0022261 A1Sicpa Holding SA
- Pigment dispersion and ink composition22 Jan 2026US 2026/0022265 A1FUJIFILM Corporation
- Polymer-ceramic core-shell particle powders, and processes for making and articles comprising such powders13 Nov 2025US 2025/0346766 A1Shpp Global Technologies B.V.
Most cited
By later US patents
- High power ultrasonic reactor for sonochemical applications392US 7,157,058 B2Nano-Size Ltd. · 2007
- Electrophoretic particles and processes for the production thereof363US 6,822,782 B2E Ink Corporation · 2004
- Electrophoretic media and processes for the production thereof192US 7,230,750 B2E Ink Corporation · 2007
- Electrophoretic media and processes for the production thereof129US 7,375,875 B2E Ink Corporation · 2008
- Non-spherical nanopowder derived nanocomposites126US 6,916,872 B2NanoProducts Corporation · 2005