C21B 7/22
Dust arresters
C21B7/22 (Dust arresters) appears on 20 US grants and 16 published applications in this corpus.
Search patents in C21B- Granted patents
- 20
- Published applications
- 16
- Assignees
- 17
- Inventors
- 63
- Latest grant
- 26 Jul 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 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 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 2 |
| 2012 | 4 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 1 |
| 2015 | 1 | 3 |
| 2016 | 1 | 0 |
| 2017 | 1 | 1 |
| 2018 | 1 | 1 |
| 2019 | 0 | 1 |
| 2020 | 0 | 1 |
| 2021 | 0 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Dry dust removal from furnace gas26 Jul 2022US 11,397,051 B2Danieli Corus B.V.
- Monitoring system for annular scrubbers18 Dec 2018US 10,155,195 B2Primetals Technologies Austria GmbH
- Method and system for operating a blast furnace with top-gas recycle and a fired tubular heater28 Mar 2017US 9,605,326 B2Hyl Technologies S,A, De C.V.
- Method and device for introducing fine particle-shaped material into the fluidised bed of a fluidised bed reduction unit6 Dec 2016US 9,512,496 B2Primetals Technologies Austria GmbH
- Cyclone with a plurality of inlet ducts3 Feb 2015US 8,945,264 B2Siemens Aktiengesellschaft
- 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.
- Process for reducing fossil co2 emissions17 Jul 2025US 2025/0229224 A1Paul Wurth S. A.
- Blast furnace plant and shutdown process26 Jan 2023US 2023/0026068 A1Danieli Corus B.V.
- Dry dust removal from furnace gas30 Jul 2020US 2020/0240711 A1Danieli Corus B.V.
- A cyclonic adaptor24 Oct 2019US 2019/0321763 A1Primetals Technologies, Limited
Most cited
By later US patents
- Dust suppression method and composition32US 4,136,050 ABetz Laboratories, Inc. · 1979
- Dust suppression method and composition24US 4,171,276 ABetz Laboratories, Inc. · 1979
- Method and device for removing solid residues from a gas purification installation23US 5,489,166 APaul Wurth S. A. · 1996
- Apparatus for cleaning blast-furnace exhaust gases9US 4,052,042 AGottfried Bischoff Bau kompl. Gasreiningungs-und Wasserruckkuhlungs-Anlag en Kommanditengesellschaft · 1977
- Pneumatic bulk material removal apparatus and method6US 4,124,409 A1978