C01B 21/0622
With iron, cobalt or nickel
Official title: {with iron, cobalt or nickel}
C01B21/0622 (With iron, cobalt or nickel) appears on 38 US grants and 43 published applications in this corpus.
Search patents in C01B- Granted patents
- 38
- Published applications
- 43
- Assignees
- 30
- Inventors
- 119
- Latest grant
- 10 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 2 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 1 | 2 |
| 2013 | 1 | 1 |
| 2014 | 0 | 5 |
| 2015 | 0 | 2 |
| 2016 | 2 | 4 |
| 2017 | 2 | 0 |
| 2018 | 4 | 3 |
| 2019 | 1 | 4 |
| 2020 | 3 | 4 |
| 2021 | 5 | 4 |
| 2022 | 0 | 1 |
| 2023 | 2 | 1 |
| 2024 | 4 | 3 |
| 2025 | 3 | 0 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Iron-rich permanent magnet10 Mar 2026US 12,573,551 B2Regents of the University of Minnesota
- Iron-nitride magnet by nitriding a porous structure23 Sep 2025US 12,424,358 B2Regents of the University of Minnesota
- Applied magnetic field synthesis and processing of iron nitride magnetic materials24 Jun 2025US 12,338,536 B2Regents of the University of Minnesota
- Cathode electrocatalyst for metal-air batteries and production process thereof22 Apr 2025US 12,283,683 B2National Kaohsiung University of Science and Technology
- Method for manufacturing nitride catalyst3 Sep 2024US 12,077,873 B2Industrial Technology Research Institute
- Methods for reducing metal oxides with ammonia gas10 Sep 2026US 2026/0265846 A1Trustees of Tufts College
- System for plasma dissociation of hydrocarbons5 Mar 2026US 2026/0061388 A1
- Iron-nitride magnet by nitriding a porous structure15 Jan 2026US 2026/0018322 A1Regents of the University of Minnesota
- Iron-nitride magnet by nitriding a porous structure31 Oct 2024US 2024/0363269 A1Regents of the University of Minnesota
- Iron-rich permanent magnet4 Apr 2024US 2024/0112855 A1Regents of the University of Minnesota
Most cited
By later US patents
- Process for producing ultra-fine ceramic particles84US 4,705,762 AToyota Jidosha Kabushiki Kaisha · 1987
- High specific surface area carbides and nitrides54US 4,515,763 ABoard of Trustees of Leland Stanford Jr. Univeristy · 1985
- Methods and compostions involving high specific surface area carbides and nitrides39US 4,851,206 AThe Board of Trustees of the Leland Stanford Junior University, Stanford University · 1989
- Magnetic material and production method thereof30US 6,319,485 B1Dowa Mining Co., Ltd. · 2001
- Method for producing iron-nitride powders21US 5,330,554 AAisin Seiki Kabushiki Kaisha · 1994