C21B 7/002
Evacuating and treating of exhaust gases
Official title: {Evacuating and treating of exhaust gases}
C21B7/002 (Evacuating and treating of exhaust gases) appears on 93 US grants and 97 published applications in this corpus.
Search patents in C21B- Granted patents
- 93
- Published applications
- 97
- Assignees
- 83
- Inventors
- 338
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 5 | 0 |
| 1978 | 1 | 0 |
| 1979 | 7 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 2 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 6 |
| 2011 | 2 | 4 |
| 2012 | 6 | 9 |
| 2013 | 4 | 2 |
| 2014 | 2 | 7 |
| 2015 | 6 | 5 |
| 2016 | 2 | 10 |
| 2017 | 4 | 5 |
| 2018 | 5 | 2 |
| 2019 | 2 | 1 |
| 2020 | 7 | 1 |
| 2021 | 0 | 2 |
| 2022 | 0 | 4 |
| 2023 | 1 | 8 |
| 2024 | 2 | 10 |
| 2025 | 3 | 12 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- 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.
- System and method for producing steel23 Dec 2025US 12,503,735 B2Sekisui Chemical Co., Ltd.
- Systems and methods for improved carbon capture associated with molten metal production25 Mar 2025US 12,258,640 B28 Rivers Capital, LLC
- Reactors and methods for production of sustainable chemicals using carbon emissions of metallurgical furnaces25 Mar 2025US 12,258,671 B2Dioxycle
- Ironmaking method and associated plant17 Sep 2026US 2026/0275433 A1
- Method and system for decarbonizing a process involving combustion of hydrocarbon-based fuel27 Aug 2026US 2026/0250852 A1
- Carbon dioxide recovery system18 Jun 2026US 2026/0166472 A1Mitsubishi Heavy Industries, Ltd.
- Method for operating a smelting furnace installation28 May 2026US 2026/0146300 A1Paul Wurth S. A.
- Blast Furnace - Converter Steel Production Method Based on Carbon Cycling12 Feb 2026US 2026/0043097 A1Cisdi Engineering Co., Ltd
Most cited
By later US patents
- Blast furnace iron production with integrated power generation70US 8,133,298 B2Air Products and Chemicals, Inc. · 2012
- Process for cooling and cleaning gas, particularly blast furnace or producer gas, containing ultrafine particles, and apparatus for performing the same30US 5,453,115 ADeutsche Voest-Alpine Industrieanlagenbau GmbH · 1995
- Pressure equalization valve and technique for shaft furnace27US 4,190,074 APaul Wurth S. A. · 1980
- Process of afterburning and purifying process exhaust gases27US 4,539,188 AMetallgesellschaft Aktiengesellschaft · 1985
- Method of cleaning gas from solid and gaseous matter and apparatus materializing same25US 4,957,512 A1990