F23C 6/04
In series connection
Official title: in series connection (consuming smoke or fumes in separate combustion apparatus F23G7/06)
F23C6/04 (In series connection) appears on 872 US grants and 570 published applications in this corpus.
Search patents in F23C- Granted patents
- 872
- Published applications
- 570
- Assignees
- 406
- Inventors
- 1,678
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 17 | 0 |
| 1978 | 3 | 0 |
| 1979 | 7 | 0 |
| 1980 | 5 | 0 |
| 1981 | 10 | 0 |
| 1982 | 13 | 0 |
| 1983 | 16 | 0 |
| 1984 | 13 | 0 |
| 1985 | 17 | 0 |
| 1986 | 11 | 0 |
| 1987 | 9 | 0 |
| 1988 | 14 | 0 |
| 1989 | 25 | 0 |
| 1990 | 17 | 0 |
| 1991 | 17 | 0 |
| 1992 | 15 | 0 |
| 1993 | 28 | 0 |
| 1994 | 23 | 0 |
| 1995 | 28 | 0 |
| 1996 | 24 | 0 |
| 1997 | 23 | 0 |
| 1998 | 35 | 0 |
| 1999 | 32 | 0 |
| 2000 | 19 | 0 |
| 2001 | 24 | 11 |
| 2002 | 18 | 23 |
| 2003 | 14 | 34 |
| 2004 | 28 | 29 |
| 2005 | 28 | 29 |
| 2006 | 11 | 25 |
| 2007 | 12 | 26 |
| 2008 | 14 | 21 |
| 2009 | 17 | 27 |
| 2010 | 17 | 32 |
| 2011 | 9 | 21 |
| 2012 | 12 | 29 |
| 2013 | 22 | 27 |
| 2014 | 29 | 24 |
| 2015 | 16 | 33 |
| 2016 | 17 | 32 |
| 2017 | 28 | 17 |
| 2018 | 20 | 18 |
| 2019 | 25 | 23 |
| 2020 | 15 | 12 |
| 2021 | 11 | 13 |
| 2022 | 14 | 20 |
| 2023 | 15 | 18 |
| 2024 | 12 | 11 |
| 2025 | 9 | 12 |
| 2026 | 8 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method and device for heating a furnace18 Aug 2026US 12,710,173 B2Linde Aktiengesellschaft
- Metal curing ovens with quick heat-up and cool-down, and processes of using same14 Jul 2026US 12,678,823 B2EPCON Industrial Services, LP
- Burner, apparatus and method for the firing of ceramic articles16 Jun 2026US 12,656,062 B2Sacmi Forni & Filter S.P.A.
- Flameless combustion burner for an endothermic reaction process9 Jun 2026US 12,649,135 B2Technip Energies France
- Multi-tube burner system for efficient mixing of fuel and air for combustion31 Mar 2026US 12,590,698 B2Sustainable Business & Engineering Solutions GmbH
- Ammonia combustion furnace2 Jul 2026US 2026/0185700 A1Kawasaki Jukogyo Kabushiki Kaisha
- Method of controlling deflagration combustion process in pistonless combustor30 Apr 2026US 2026/0117975 A1Finno Exergy Oy
- Low nox gas burner with cooled flue gas recycle5 Feb 2026US 2026/0036297 A1Honeywell International Inc.
- Low nox emission burner for firing liquid fuels and method of operation18 Dec 2025US 2025/0383083 A1Honeywell International Inc.
- Low nox emission burner for firing liquid fuels or fuel gas and method of operation18 Dec 2025US 2025/0383088 A1Honeywell International Inc.
Most cited
By later US patents
- Substoichiometric combustion of low heating value gases using different platinum catalysts283US 4,378,048 AGulf Research & Development Company · 1983
- Staged combustion of a low heating value fuel gas for driving a gas turbine166US 6,201,029 B1Marathon Oil Company · 2001
- Low NO.sub.x formation burner apparatus and methods152US 5,195,884 AJohn Zink Company, a Division of Koch Engineering Company, Inc. · 1993
- Method and system for reducing NO.sub.x and fuel emissions in a furnace149US 5,759,022 AGas Research Institute · 1998
- Gas turbine combustor146US 5,836,164 AHitachi, Ltd. · 1998