C21B 2100/22
By reforming
Official title: by reforming
C21B2100/22 (By reforming) appears on 162 US grants and 120 published applications in this corpus.
Search patents in C21B- Granted patents
- 162
- Published applications
- 120
- Assignees
- 94
- Inventors
- 373
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 10 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 8 | 0 |
| 1982 | 5 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 6 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 4 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 1 | 0 |
| 1999 | 5 | 0 |
| 2000 | 3 | 0 |
| 2001 | 8 | 1 |
| 2002 | 3 | 3 |
| 2003 | 5 | 4 |
| 2004 | 0 | 1 |
| 2005 | 1 | 2 |
| 2006 | 0 | 2 |
| 2007 | 3 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 2 |
| 2010 | 1 | 3 |
| 2011 | 0 | 4 |
| 2012 | 2 | 6 |
| 2013 | 2 | 4 |
| 2014 | 4 | 6 |
| 2015 | 8 | 2 |
| 2016 | 4 | 4 |
| 2017 | 2 | 4 |
| 2018 | 5 | 1 |
| 2019 | 4 | 3 |
| 2020 | 1 | 2 |
| 2021 | 3 | 3 |
| 2022 | 0 | 9 |
| 2023 | 2 | 17 |
| 2024 | 5 | 11 |
| 2025 | 7 | 9 |
| 2026 | 3 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Hydrogen release/storage system, hydrogen release/storage method, ammonia production equipment, gas turbine, fuel cell, and steel mill24 Mar 2026US 12,582,953 B2Mitsubishi Heavy Industries, Ltd.
- Steelmaking line and method of producing reduced iron27 Jan 2026US 12,534,770 B2Jfe Steel Corporation
- Solid carbon production device and solid carbon production method20 Jan 2026US 12,528,701 B2Mitsubishi Heavy Industries, Ltd.
- Hydrogen release and storage system, hydrogen release and storage method, ammonia production apparatus, gas turbine, fuel cell, and steel mill23 Dec 2025US 12,503,362 B2Mitsubishi Heavy Industries, Ltd.
- System and method for producing steel23 Dec 2025US 12,503,735 B2Sekisui Chemical Co., Ltd.
- Method of producing reduced iron8 Oct 2026US 2026/0308705 A1Jfe Steel Corporation
- Plant and mehtod for the production of direct reduced iron10 Sep 2026US 2026/0265847 A1Danieli & C. Officine Meccaniche SpA
- Direct reduction system and method utilizing pre-reducing furnace and heat exchanger10 Sep 2026US 2026/0265849 A1Midrex Technologies, Inc.
- Systematic carbon emissions reduction method for whole process of production and casting3 Sep 2026US 2026/0258513 A1Jiqing Low Carbon Technology (Qinhuangdao) Co., Ltd.
- H2 rich gas injection to direct reduction shaft furnace upper section27 Aug 2026US 2026/0250793 A1Midrex Technologies, Inc.
Most cited
By later US patents
- Slagging coal combustor for cementitious slag production, metal oxide reduction, shale gas and oil recovery, enviromental remediation, emission control and CO2 sequestration77US 8,337,613 B22012
- Method for the gaseous reduction of metal ores using reducing gas produced by gasification of solid or liquid fossil fuels50US 4,246,024 AGrupo Industrial Alfa, S.A. · 1981
- Method and apparatus for producing reformed gases48US 6,524,356 B2Midrex Technologies, Inc. · 2003
- Synthetic gas production34US 4,153,426 AArthur G. McKee & Company · 1979
- Method for producing metallic iron particles27US 4,046,557 AMidrex Corporation · 1977