C01B 25/375
Of iron
Official title: {of iron}
C01B25/375 (Of iron) appears on 91 US grants and 158 published applications in this corpus.
Search patents in C01B- Granted patents
- 91
- Published applications
- 158
- Assignees
- 118
- Inventors
- 464
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 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 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 1 |
| 2004 | 1 | 1 |
| 2005 | 1 | 0 |
| 2006 | 0 | 2 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 2 | 2 |
| 2010 | 1 | 2 |
| 2011 | 1 | 7 |
| 2012 | 1 | 7 |
| 2013 | 6 | 5 |
| 2014 | 1 | 9 |
| 2015 | 11 | 11 |
| 2016 | 9 | 5 |
| 2017 | 6 | 4 |
| 2018 | 6 | 3 |
| 2019 | 5 | 2 |
| 2020 | 4 | 5 |
| 2021 | 0 | 1 |
| 2022 | 2 | 6 |
| 2023 | 2 | 14 |
| 2024 | 5 | 29 |
| 2025 | 10 | 20 |
| 2026 | 10 | 21 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Preparation method for iron phosphate powder by microporous filtration and concentration and preparation device thereof6 Oct 2026US 12,753,078 B2Zhejiang Dong'ou Filtering Machinery Manufacturing Co., Ltd.
- Anode, method for manufacturing same by using electrolytic deposition, and device for manufacturing same19 May 2026US 12,633,545 B2Industry-University Cooperation Foundation Hanyang University Erica Campus
- Comprehensive recycling method for waste lithium iron phosphate battery19 May 2026US 12,633,586 B2Hunan Jin Yuan New Materials Joint Stock Company Limited
- Preparation method of heterosite iron phosphate and application thereof12 May 2026US 12,626,965 B2Guangdong Brunp Recycling Technology Co., Ltd.
- Method for preparing carbon-coated lithium iron phosphate material from ferrous phosphate5 May 2026US 12,620,579 B2Hubei Rt Advanced Materials Group Company Limited
- High power electrode materials1 Oct 2026US 2026/0302226 A1A123 Systems, Inc.
- Olivine cathode active material for lithium secondary battery and manufacturing method thereof17 Sep 2026US 2026/0279800 A1Posco Holdings Inc.
- Cathode material, preparation method for cathode material, and secondary battery10 Sep 2026US 2026/0269246 A1Shenzhen Dynanonic Co., Ltd.
- Positive electrode active material and preparation method therefor, positive electrode sheet, battery, and electric device20 Aug 2026US 2026/0245898 A1Contemporary Amperex Technology Co., Limited
- Lithium iron phosphate cathode material, preparation method therefor, and lithium-ion battery13 Aug 2026US 2026/0237664 A1Guangdong Brunp Recycling Technology Co., Ltd.
Most cited
By later US patents
- Methods for production of calcium phosphate79US 5,939,039 AOrthovita, Inc. · 1999
- Minerals and methods for their production and use52US 6,325,987 B1Vita Licensing, Inc. · 2001
- Minerals and methods for their production and use30US 6,969,501 B2Vita Special Purpose Corporation · 2005
- Lithium manganese phosphate/carbon nanocomposites as cathode active materials for secondary lithium batteries20US 8,784,694 B2Dow Global Technologies LLC · 2014
- Hydrated iron phosphate electrode materials for rechargeable lithium battery cell systems15US 6,835,500 B2Rutgers University · 2004