C21B 2100/64
Controlling the physical properties of the gas
Official title: Controlling the physical properties of the gas, e.g. pressure or temperature
C21B2100/64 (Controlling the physical properties of the gas) appears on 201 US grants and 126 published applications in this corpus.
Search patents in C21B- Granted patents
- 201
- Published applications
- 126
- Assignees
- 110
- Inventors
- 416
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 13 | 0 |
| 1978 | 6 | 0 |
| 1979 | 11 | 0 |
| 1980 | 11 | 0 |
| 1981 | 8 | 0 |
| 1982 | 4 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 5 | 0 |
| 1989 | 5 | 0 |
| 1990 | 6 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 5 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 5 | 0 |
| 2000 | 2 | 0 |
| 2001 | 9 | 3 |
| 2002 | 2 | 5 |
| 2003 | 7 | 3 |
| 2004 | 2 | 1 |
| 2005 | 0 | 1 |
| 2006 | 0 | 3 |
| 2007 | 1 | 0 |
| 2008 | 1 | 2 |
| 2009 | 1 | 8 |
| 2010 | 2 | 7 |
| 2011 | 4 | 6 |
| 2012 | 6 | 9 |
| 2013 | 8 | 3 |
| 2014 | 2 | 4 |
| 2015 | 7 | 3 |
| 2016 | 3 | 2 |
| 2017 | 2 | 0 |
| 2018 | 4 | 0 |
| 2019 | 1 | 2 |
| 2020 | 2 | 5 |
| 2021 | 2 | 2 |
| 2022 | 2 | 9 |
| 2023 | 1 | 13 |
| 2024 | 3 | 14 |
| 2025 | 10 | 12 |
| 2026 | 7 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Steel making plant with electric arc furnace21 Apr 2026US 12,607,409 B2SMS group GmbH
- Method and device for producing direct reduced metal7 Apr 2026US 12,595,521 B2Greeniron H2 AB
- Method for producing reduced iron7 Apr 2026US 12,595,522 B2Nippon Steel Corporation
- Gas production apparatus, gas production system, steel production system, chemical manufacturing system, and gas production method with reduced carbon dioxide emission24 Mar 2026US 12,582,941 B2Sekisui Chemical Co., Ltd.
- 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.
- Method of producing reduced iron16 Jul 2026US 2026/0201485 A1Jfe Steel Corporation
- Blast furnace gas pressure swing adsorption carbon dioxide capture system coupled with compressed energy storage9 Jul 2026US 2026/0192238 A1Hebei Chuangjie Environmental Protection Engineering Co., Ltd.
- Controlling temperature and nox content for a reduction gas11 Jun 2026US 2026/0159909 A1Primetals Technologies Austria GmbH
- Direct Reduced Iron Pellets and Use Thereof16 Apr 2026US 2026/0103768 A1HYBRIT Development AB
- Fluidized bed ironmaking process and system19 Mar 2026US 2026/0078457 A1Charm Industrial, Inc.
Most cited
By later US patents
- Method and system for energy-optimized and CO2 emission-optimized iron production101US 8,419,825 B2Siemens Vai Metals Technologies GmbH · 2013
- Process for production of elemental iron82US 7,931,731 B2Shell Oil Company · 2011
- Method for the direct reduction of iron ore61US 4,160,663 A1979
- 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 of producing reduced metals and apparatus for reducing metal oxides49US 6,797,034 B2Kabushiki Kaisha Seiko Sho · 2004