C01C 3/12
Simple or complex iron cyanides
C01C3/12 (Simple or complex iron cyanides) appears on 72 US grants and 86 published applications in this corpus.
Search patents in C01C- Granted patents
- 72
- Published applications
- 86
- Assignees
- 54
- Inventors
- 185
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 2 |
| 2009 | 1 | 1 |
| 2010 | 1 | 2 |
| 2011 | 1 | 1 |
| 2012 | 1 | 1 |
| 2013 | 1 | 0 |
| 2014 | 1 | 12 |
| 2015 | 0 | 7 |
| 2016 | 10 | 3 |
| 2017 | 12 | 4 |
| 2018 | 3 | 4 |
| 2019 | 1 | 2 |
| 2020 | 4 | 5 |
| 2021 | 2 | 5 |
| 2022 | 4 | 5 |
| 2023 | 5 | 8 |
| 2024 | 4 | 10 |
| 2025 | 4 | 4 |
| 2026 | 4 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electrolyte regeneration for organic redox flow batteries based on water-soluble phenazine-based compounds8 Sep 2026US 12,731,806 B2CMBlu Energy AG
- Prussian blue-based coagulant and microplastic coagulation method using the same19 May 2026US 12,630,449 B2Korea Institute of Science and Technology
- Process for removing cyanide from a cyanide-bearing aqueous fluid21 Apr 2026US 12,606,462 B2Commonwealth Scientific and Industrial Research Organisation
- Method for size-controlled synthesis of transition metal cyanide coordination compound6 Jan 2026US 12,515,959 B1Natron Energy, Inc.
- Positive electrode active material, sodium ion secondary battery comprising same and power consuming device16 Dec 2025US 12,500,231 B2Contemporary Amperex Technology (Hong Kong) Limited
- Cathode Material and Preparation Method Thereof, and Cathode Plate and Sodium-Ion Battery30 Jul 2026US 2026/0221447 A1Hubei Wanrun New Energy Technology Co., Ltd.
- Cathode for proton batteries and method of manufacture16 Jul 2026US 2026/0204567 A1Proton Systems Pty Limited
- Doped manganese-based prussian white positive-electrode materials, preparation methods therefor and uses thereof9 Jul 2026US 2026/0196502 A1Natfound Technology Co., Ltd.
- Prussian Blue Cathode Material and Preparation Method Therefor, Cathode Sheet and Sodium-Ion Battery2 Jul 2026US 2026/0188649 A1Hubei Wanrun New Energy Technology Co., Ltd.
- Porous metal cyanide-based framework material with cation gating effect, its preparation method, and application in carbon dioxide capture4 Jun 2026US 2026/0151727 A1Zhejiang University
Most cited
By later US patents
- Amperometric sensor194US 7,135,100 B1Drew Scientific Ventures LLC · 2006
- Hydrotalcites having a hexagonal needle-like crystal structure and process for production thereof46US 4,351,814 AKyowa Chemical Industry Co., Ltd. · 1982
- Calcium Potassium Ferrocyanide, a prophylactic mixture comprising this compound and the use thereof for decorporation of Radiocesium in subjects affected by nuclear radiation39US 7,935,366 B2Secretary, Department of Atomic Energy · 2011
- Process for the production of Berlin blue20US 3,985,571 ADeutsche Gold- und Silber-Scheideanstalt vormals Roessler · 1976
- Method for treating gas liquor17US 4,132,636 ANiigata Engineering Co., Ltd. · 1979