F27D 17/20
Arrangements for treatment or cleaning of waste gases
F27D17/20 (Arrangements for treatment or cleaning of waste gases) appears on 305 US grants and 338 published applications in this corpus.
Search patents in F27D- Granted patents
- 305
- Published applications
- 338
- Assignees
- 268
- Inventors
- 905
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 6 | 0 |
| 1995 | 4 | 0 |
| 1996 | 8 | 0 |
| 1997 | 8 | 0 |
| 1998 | 10 | 0 |
| 1999 | 6 | 0 |
| 2000 | 4 | 0 |
| 2001 | 12 | 3 |
| 2002 | 4 | 1 |
| 2003 | 1 | 1 |
| 2004 | 3 | 11 |
| 2005 | 6 | 7 |
| 2006 | 3 | 3 |
| 2007 | 4 | 11 |
| 2008 | 2 | 13 |
| 2009 | 4 | 18 |
| 2010 | 10 | 22 |
| 2011 | 17 | 14 |
| 2012 | 10 | 21 |
| 2013 | 11 | 10 |
| 2014 | 15 | 28 |
| 2015 | 17 | 13 |
| 2016 | 12 | 15 |
| 2017 | 13 | 11 |
| 2018 | 15 | 15 |
| 2019 | 7 | 9 |
| 2020 | 9 | 11 |
| 2021 | 6 | 14 |
| 2022 | 5 | 11 |
| 2023 | 7 | 15 |
| 2024 | 8 | 17 |
| 2025 | 12 | 26 |
| 2026 | 12 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method for manufacturing direct reduced iron and DRI manufacturing equipment6 Oct 2026US 12,753,452 B2ArcelorMittal
- Apparatus and process for production of burnt lime or dolomite8 Sep 2026US 12,729,156 B2Fels-Werke GmbH
- Device for smelting and regenerating phosphogypsum using high-temperature ceramsite and method for using same8 Sep 2026US 12,729,157 B2Hubei Juhai Environmental Technology Co., Ltd.
- Powder-material flying melting furnace having dual regenerative chambers19 May 2026US 12,631,397 B2
- Steel making plant with electric arc furnace21 Apr 2026US 12,607,409 B2SMS group GmbH
- Method for manufacturing cement clinker10 Sep 2026US 2026/0265128 A1HSustainability GmbH
- Method of heating a steel semi-product in a heating furnace, and associated heating furnace3 Sep 2026US 2026/0259005 A1
- Remediation systems and thermal management systems13 Aug 2026US 2026/0233272 A1ASRC Energy Services, LLC
- Kiln exhaust gas regeneration apparatus and system, and kiln system16 Jul 2026US 2026/0199824 A1TDK Corporation
- Method of producing reduced iron16 Jul 2026US 2026/0201485 A1Jfe Steel Corporation
Most cited
By later US patents
- Particulate trap for vertical furnace349US 5,312,245 AInternational Business Machines Corporation · 1994
- Method and apparatus for injection of a liquid waste into a molten bath124US 5,436,210 AMolten Metal Technology, Inc. · 1995
- Method and system for injection of a vaporizable material into a molten bath112US 5,679,132 AMolten Metal Technology, Inc. · 1997
- Method for injecting feed streams into a molten bath112US 5,858,059 AMolten Metal Technology, Inc. · 1999
- Method and apparatus for producing a product in a regenerator furnace from impure waste containing a non-gasifiable impurity110US 5,640,709 AMolten Metal Technology, Inc. · 1997