F23C 2202/00
Fluegas recirculation
F23C2202/00 (Fluegas recirculation) appears on 368 US grants and 334 published applications in this corpus.
Search patents in F23C- Granted patents
- 368
- Published applications
- 334
- Assignees
- 216
- Inventors
- 826
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 5 | 0 |
| 1984 | 6 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 5 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 6 | 0 |
| 1994 | 6 | 0 |
| 1995 | 13 | 0 |
| 1996 | 7 | 0 |
| 1997 | 5 | 0 |
| 1998 | 10 | 0 |
| 1999 | 15 | 0 |
| 2000 | 14 | 0 |
| 2001 | 8 | 6 |
| 2002 | 13 | 9 |
| 2003 | 8 | 21 |
| 2004 | 17 | 16 |
| 2005 | 19 | 10 |
| 2006 | 7 | 8 |
| 2007 | 6 | 8 |
| 2008 | 5 | 11 |
| 2009 | 5 | 10 |
| 2010 | 5 | 19 |
| 2011 | 7 | 14 |
| 2012 | 4 | 15 |
| 2013 | 17 | 28 |
| 2014 | 9 | 17 |
| 2015 | 10 | 11 |
| 2016 | 15 | 18 |
| 2017 | 17 | 11 |
| 2018 | 13 | 12 |
| 2019 | 16 | 9 |
| 2020 | 11 | 10 |
| 2021 | 6 | 7 |
| 2022 | 9 | 13 |
| 2023 | 5 | 14 |
| 2024 | 6 | 13 |
| 2025 | 11 | 17 |
| 2026 | 5 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F23C 2202/30Premixing fluegas with combustion airIndexing code135
- F23C 2202/10Premixing fluegas with fuel and combustion airIndexing code90
- F23C 2202/40Inducing local whirls around flameIndexing code76
- F23C 2202/20Premixing fluegas with fuelIndexing code73
- F23C 2202/50Control of recirculation rateIndexing code60
Recent patents
- Refractory block for low NOx burners with internal flue gas recirculation6 Oct 2026US 12,753,916 B2Honeywell International Inc.
- Process burner with distal flame holder25 Aug 2026US 12,716,582 B2
- Fuel-air mixing and flame stabilization device for a low emission burner with internal flue gas recirculation26 May 2026US 12,638,174 B2Honeywell International Inc.
- Power generation process utilizing fuel, liquid air and/or oxygen with zero CO2 emissions28 Apr 2026US 12,613,064 B2Saipem S.P.A.
- Device and method for supplying combustion air and for recirculating exhaust gas for a burner3 Mar 2026US 12,565,991 B2WS Warmeprozesstechnik GmbH
- A burner and a process for combusting metal powder3 Sep 2026US 2026/0258942 A1
- Burner assembly for gaseous fuels27 Aug 2026US 2026/0251296 A1Clearsign Technologies Corporation
- Combustion system capable of operating with a recycling of combustion fumes30 Jul 2026US 2026/0218900 A1Carbodown
- Method for reducing nitrogen oxide emission and combustion system16 Jul 2026US 2026/0202054 A1China Petroleum & Chemical Corporation
- Recuperative burner19 Mar 2026US 2026/0078899 A1Kueppers Solutions GmbH
Most cited
By later US patents
- Recuperated gas turbine engine system and method employing catalytic combustion170US 7,007,487 B2MES International, Inc. · 2006
- Method and apparatus to increase combustion efficiency and to reduce exhaust gas pollutants from combustion of a fuel158US 6,851,413 B1Ronnell Company, Inc. · 2005
- Thermal power plant with sequential combustion and reduced-CO2 emission, and a method for operating a plant of this type129US 7,503,178 B2ALSTOM Technology Ltd · 2009
- Methods and apparatus for burning fuel with low NO.sub.x formation123US 5,098,282 AJohn Zink Company · 1992
- Methods and apparatus for burning fuel with low NO.sub.x formation119US 5,154,596 AJohn Zink Company, a Division of Koch Engineering Company, Inc. · 1992