C01G 49/06
Ferric oxide [fe2o3]
Official title: Ferric oxide [Fe2O3]
C01G49/06 (Ferric oxide [fe2o3]) appears on 555 US grants and 465 published applications in this corpus.
Search patents in C01G- Granted patents
- 555
- Published applications
- 465
- Assignees
- 369
- Inventors
- 1,426
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 13 | 0 |
| 1977 | 16 | 0 |
| 1978 | 21 | 0 |
| 1979 | 10 | 0 |
| 1980 | 10 | 0 |
| 1981 | 10 | 0 |
| 1982 | 8 | 0 |
| 1983 | 10 | 0 |
| 1984 | 7 | 0 |
| 1985 | 8 | 0 |
| 1986 | 9 | 0 |
| 1987 | 6 | 0 |
| 1988 | 8 | 0 |
| 1989 | 4 | 0 |
| 1990 | 6 | 0 |
| 1991 | 13 | 0 |
| 1992 | 5 | 0 |
| 1993 | 5 | 0 |
| 1994 | 10 | 0 |
| 1995 | 6 | 0 |
| 1996 | 7 | 0 |
| 1997 | 11 | 0 |
| 1998 | 8 | 0 |
| 1999 | 10 | 0 |
| 2000 | 11 | 0 |
| 2001 | 11 | 4 |
| 2002 | 11 | 12 |
| 2003 | 8 | 11 |
| 2004 | 10 | 15 |
| 2005 | 2 | 9 |
| 2006 | 5 | 16 |
| 2007 | 6 | 8 |
| 2008 | 3 | 27 |
| 2009 | 7 | 16 |
| 2010 | 12 | 17 |
| 2011 | 12 | 12 |
| 2012 | 13 | 14 |
| 2013 | 8 | 12 |
| 2014 | 10 | 23 |
| 2015 | 8 | 26 |
| 2016 | 19 | 31 |
| 2017 | 20 | 17 |
| 2018 | 20 | 24 |
| 2019 | 15 | 28 |
| 2020 | 15 | 23 |
| 2021 | 20 | 23 |
| 2022 | 19 | 27 |
| 2023 | 20 | 21 |
| 2024 | 24 | 26 |
| 2025 | 17 | 14 |
| 2026 | 8 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Sodium ion battery cathode material, and a preparation method and application therefor6 Oct 2026US 12,753,088 B2Hubei Wanrun New Energy Technology Co., Ltd.
- Water treatment and purification method25 Aug 2026US 12,715,781 B2Imam Abdulrahman Bin Faisal University
- Method for separating iron element in brine and application thereof26 May 2026US 12,637,360 B2BYD Company Limited
- Method for producing reduced form of metal oxides14 Apr 2026US 12,601,030 B2K.K. Sun Metalon
- Ferrite powder, ferrite resin composite material, and electromagnetic shielding material, electronic material, or electronic component7 Apr 2026US 12,595,188 B2Powdertech Co., Ltd.
- Mixed ferrite nanoparticles and uses thereof27 Aug 2026US 2026/0250149 A1Institut National De La Recherche Scientifique
- Comprehensive utilization method for steel making slag13 Aug 2026US 2026/0234753 A1Yuanchu Technology (Beijing) Co., Ltd.
- Method for producing reduced form of metal oxide23 Jul 2026US 2026/0209886 A1K.K. Sun Metalon
- Method of synthesizing core-shell iron oxide nbrief description anoparticles through continuous synthesis of core and shell in single reaction chamber2 Jul 2026US 2026/0184593 A1UIF (University Industry Foundation), Yonsei University
- Method for recycling used or waste permanent magnets2 Jul 2026US 2026/0184594 A1Caremag
Most cited
By later US patents
- High power ultrasonic reactor for sonochemical applications392US 7,157,058 B2Nano-Size Ltd. · 2007
- Very high purity fine powders and methods to produce such powders142US 6,569,397 B12003
- High purity fine metal powders and methods to produce such powder117US 6,786,950 B2NanoProducts Corporation · 2004
- Process for making surfactant capped nanocrystals88US 6,440,213 B1The Regents of the University of California · 2002
- Process for reducing sulfur emissions with calcium-containing sorbents75US 5,368,617 AGenesis Research Corporation · 1994