F23C 9/06
Combustion apparatus characterised by arrangements for returning combustion products or flue gases
Official title: for completing combustion
F23C9/06 (Combustion apparatus characterised by arrangements for returning combustion products or flue gases) appears on 54 US grants and 67 published applications in this corpus.
Search patents in F23C- Granted patents
- 54
- Published applications
- 67
- Assignees
- 53
- Inventors
- 156
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 1 | 3 |
| 2005 | 4 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 1 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 2 |
| 2012 | 1 | 3 |
| 2013 | 0 | 1 |
| 2014 | 1 | 1 |
| 2015 | 4 | 10 |
| 2016 | 3 | 7 |
| 2017 | 2 | 1 |
| 2018 | 4 | 5 |
| 2019 | 4 | 11 |
| 2020 | 6 | 1 |
| 2021 | 2 | 1 |
| 2022 | 2 | 7 |
| 2023 | 4 | 6 |
| 2024 | 2 | 2 |
| 2025 | 2 | 1 |
| 2026 | 3 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- CLC method and plant with recovery of gaseous oxygen produced by an oxygen carrier29 Sep 2026US 12,747,859 B2Ifp Energies Nouvelles
- Metal curing ovens with quick heat-up and cool-down, and processes of using same14 Jul 2026US 12,678,823 B2EPCON Industrial Services, LP
- Power generation process utilizing fuel, liquid air and/or oxygen with zero CO2 emissions28 Apr 2026US 12,613,064 B2Saipem S.P.A.
- Processes and apparatuses for burning a hydrogen fuel and a hydrocarbon fuel26 Aug 2025US 12,398,879 B2Uop LLC
- Regenerative burner system and method of use3 Jun 2025US 12,320,521 B2Fives North American Combustion, Inc.
- Catalytic burner and hydrogen boiler for water heating10 Apr 2025US 2025/0116398 A1Giacomini S.p. A.
- Clc method and plant with recovery of gaseous oxygen produced by an oxygen carrier15 Aug 2024US 2024/0271780 A1Ifp Energies Nouvelles
- Refractory block for low nox burners with internal flue gas recirculation28 Mar 2024US 2024/0102646 A1Honeywell International Inc.
- Power generation process utilizing fuel, liquid air and/or oxygen with zero co2 emissions28 Dec 2023US 2023/0417482 A1Saipem S.P.A.
- Metal curing ovens with quick heat-up and cool-down, and processes of using same7 Dec 2023US 2023/0390800 A1EPCON Industrial Systems, LP
Most cited
By later US patents
- Aspirating combustion system75US 5,062,789 A1991
- Burner with a perforated flame holder and pre-heat apparatus52US 9,377,190 B2Clearsign Combustion Corporation · 2016
- Method for flame location transition from a start-up location to a perforated flame holder49US 9,388,981 B2Clearsign Combustion Corporation · 2016
- Burner with a perforated reaction holder and heating apparatus29US 9,447,965 B2Clearsign Comubstion Corporation · 2016
- Low emission U-fired boiler combustion system24US 6,058,855 AD. B. Riley, Inc. · 2000