C21B 2100/44
Removing particles
Official title: Removing particles, e.g. by scrubbing, dedusting
C21B2100/44 (Removing particles) appears on 287 US grants and 180 published applications in this corpus.
Search patents in C21B- Granted patents
- 287
- Published applications
- 180
- Assignees
- 143
- Inventors
- 580
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 9 | 0 |
| 1978 | 5 | 0 |
| 1979 | 5 | 0 |
| 1980 | 10 | 0 |
| 1981 | 9 | 0 |
| 1982 | 6 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 6 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 8 | 0 |
| 1989 | 9 | 0 |
| 1990 | 13 | 0 |
| 1991 | 6 | 0 |
| 1992 | 2 | 0 |
| 1993 | 4 | 0 |
| 1994 | 3 | 0 |
| 1995 | 14 | 0 |
| 1996 | 5 | 0 |
| 1997 | 6 | 0 |
| 1998 | 4 | 0 |
| 1999 | 9 | 0 |
| 2000 | 10 | 0 |
| 2001 | 24 | 2 |
| 2002 | 8 | 4 |
| 2003 | 4 | 3 |
| 2004 | 3 | 4 |
| 2005 | 2 | 5 |
| 2006 | 1 | 4 |
| 2007 | 2 | 2 |
| 2008 | 2 | 6 |
| 2009 | 4 | 11 |
| 2010 | 3 | 7 |
| 2011 | 5 | 11 |
| 2012 | 10 | 10 |
| 2013 | 10 | 5 |
| 2014 | 4 | 8 |
| 2015 | 11 | 5 |
| 2016 | 4 | 5 |
| 2017 | 4 | 4 |
| 2018 | 4 | 6 |
| 2019 | 2 | 0 |
| 2020 | 5 | 3 |
| 2021 | 1 | 4 |
| 2022 | 2 | 5 |
| 2023 | 3 | 12 |
| 2024 | 3 | 24 |
| 2025 | 5 | 14 |
| 2026 | 5 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for manufacturing direct reduced iron and DRI manufacturing equipment6 Oct 2026US 12,753,452 B2ArcelorMittal
- Method of removing volatile constituents from an industrial dust, and valuable material-containing product12 May 2026US 12,624,417 B2MontanuniversitäT Leoben
- Steel making plant with electric arc furnace21 Apr 2026US 12,607,409 B2SMS group GmbH
- Method for producing reduced iron7 Apr 2026US 12,595,522 B2Nippon Steel Corporation
- Steelmaking line and method of producing reduced iron27 Jan 2026US 12,534,770 B2Jfe Steel Corporation
- Method of producing reduced iron8 Oct 2026US 2026/0308705 A1Jfe Steel Corporation
- Cold water, wide range wet venturi scrubber for a direct reduction plant1 Oct 2026US 2026/0297696 A1Midrex Technologies, Inc.
- Plant and mehtod for the production of direct reduced iron10 Sep 2026US 2026/0265847 A1Danieli & C. Officine Meccaniche SpA
- Cooling gas recirculation in the upper reduction zone of a direct reduction shaft furnace10 Sep 2026US 2026/0265848 A1Midrex Technologies, Inc.
- Direct reduction system and method utilizing pre-reducing furnace and heat exchanger10 Sep 2026US 2026/0265849 A1Midrex Technologies, 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
- Blast furnace iron production with integrated power generation70US 8,133,298 B2Air Products and Chemicals, Inc. · 2012
- Method for producing molten iron by submerged combustion69US 4,238,226 AMidrex Corporation · 1980
- Apparatus for producing molten iron by submerged combustion67US 4,270,740 AMidrex Corporation · 1981
- Method for the direct reduction of iron ore61US 4,160,663 A1979