C22B 5/18
Reducing step-by-step
C22B5/18 (Reducing step-by-step) appears on 36 US grants and 42 published applications in this corpus.
Search patents in C22B- Granted patents
- 36
- Published applications
- 42
- Assignees
- 42
- Inventors
- 113
- Latest grant
- 30 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 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 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 1 |
| 2002 | 1 | 1 |
| 2003 | 1 | 1 |
| 2004 | 2 | 4 |
| 2005 | 1 | 3 |
| 2006 | 1 | 1 |
| 2007 | 0 | 2 |
| 2008 | 1 | 0 |
| 2009 | 3 | 4 |
| 2010 | 2 | 4 |
| 2011 | 1 | 1 |
| 2012 | 3 | 1 |
| 2013 | 1 | 0 |
| 2014 | 1 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 2 |
| 2017 | 1 | 0 |
| 2018 | 2 | 2 |
| 2019 | 1 | 2 |
| 2020 | 1 | 1 |
| 2021 | 1 | 1 |
| 2022 | 2 | 1 |
| 2023 | 0 | 1 |
| 2024 | 1 | 3 |
| 2025 | 1 | 4 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process for magnesium metal extraction from mineral sources30 Dec 2025US 12,509,747 B2Magnesium Innovations Group Inc.
- Process for transition metal oxide reduction1 Oct 2024US 12,104,224 B2Helios Project Ltd.
- Method for producing alloy powders based on titanium metal13 Sep 2022US 11,440,096 B2RD Titan Group, TOV
- Method for preparing high-melting-point metal powder through multi-stage deep reduction8 Feb 2022US 11,241,740 B2Northeastern University
- Method for preparing reduced titanium powder by multistage deep reduction15 Jun 2021US 11,033,965 B2Northeastern University
- A process for transition metal oxide reduction30 Jul 2026US 2026/0218323 A1Helios Project Ltd.
- Process for magnesium metal extraction from mineral sources9 Apr 2026US 2026/0098322 A1Magnesium Innovations Group Inc.
- Extraction of elements and/or compounds from iron-containing materials such as iron-containing tailings, recovery of magnetically susceptible materials, and related systems and products2 Oct 2025US 2025/0305075 A1Phoenix Tailings, Inc.
- Method for metal production28 Aug 2025US 2025/0270671 A1Bradford Metallurgy Ltd
- Process for magnesium metal extraction from mineral sources26 Jun 2025US 2025/0207221 A1Magnesium Innovations Group Inc.
Most cited
By later US patents
- Niobium powder and a process for the production of niobium and/or tantalum powders87US 6,136,062 AH. C. Starck GmbH · 2000
- Combustion looping using composite oxygen carriers43US 7,767,191 B2The Ohio State University · 2010
- Process and an apparatus for producing metals and metal alloys36US 6,440,195 B1Technological Resources Pty. Limited · 2002
- Process for the reduction of complex metallic ores12US 3,997,333 AWestinghouse Electric Corp. · 1976
- Process for producing high-purity metals11US 4,477,277 ASAMIM Societa Azionaria Minero Metallurgica S.p.A. · 1984