F23C 6/042
With fuel supply in stages
Official title: {with fuel supply in stages (for staged combustion F23C6/047)}
F23C6/042 (With fuel supply in stages) appears on 91 US grants and 71 published applications in this corpus.
Search patents in F23C- Granted patents
- 91
- Published applications
- 71
- Assignees
- 67
- Inventors
- 210
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 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 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 4 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 5 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 1 | 2 |
| 2005 | 3 | 5 |
| 2006 | 2 | 1 |
| 2007 | 1 | 2 |
| 2008 | 2 | 1 |
| 2009 | 1 | 1 |
| 2010 | 0 | 2 |
| 2011 | 1 | 0 |
| 2012 | 0 | 3 |
| 2013 | 1 | 2 |
| 2014 | 2 | 3 |
| 2015 | 2 | 11 |
| 2016 | 4 | 5 |
| 2017 | 5 | 1 |
| 2018 | 3 | 3 |
| 2019 | 5 | 8 |
| 2020 | 2 | 3 |
| 2021 | 3 | 1 |
| 2022 | 3 | 8 |
| 2023 | 4 | 3 |
| 2024 | 1 | 2 |
| 2025 | 3 | 3 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Metal curing ovens with quick heat-up and cool-down, and processes of using same14 Jul 2026US 12,678,823 B2EPCON Industrial Services, LP
- Method for production of elemental sulfur and sulfuric acid10 Feb 2026US 12,545,580 B2Haldor TopsøE A/S
- Low NOx, high efficiency, high temperature, staged recirculating burner and radiant tube combustion system8 Jul 2025US 12,352,433 B2Saint-Gobain Ceramics & Plastics, Inc.
- Combustion systems including heat modules, and associated devices and methods18 Mar 2025US 12,253,259 B2Modern Hydrogen, Inc.
- Method and device for flameless stepwise combustion4 Mar 2025US 12,241,626 B2WS Warmeprozesstechnik GmbH
- Ammonia combustion furnace2 Jul 2026US 2026/0185700 A1Kawasaki Jukogyo Kabushiki Kaisha
- Low nox, high efficiency, high temperature, staged recirculating burner and radiant tube combustion system23 Oct 2025US 2025/0327568 A1Saint-Gobain Ceramics & Plastics, Inc.
- Combustion systems including heat modules, and associated devices and methods12 Jun 2025US 2025/0189120 A1Modern Hydrogen, Inc.
- Burner system including a distal flame holder and a non-reactive fluid source20 Mar 2025US 2025/0093024 A1Clearsign Technologies Corporation
- Parallel process heating against serial combustion28 Nov 2024US 2024/0391768 A1
Most cited
By later US patents
- Method and system for reducing NO.sub.x and fuel emissions in a furnace149US 5,759,022 AGas Research Institute · 1998
- Process for generating power including a combustion process142US 6,298,664 B1Norsk Hydro ASA · 2001
- 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
- Reduced emission combustion process with resource conservation and recovery options "ZEROS" zero-emission energy recycling oxidation system97US 5,906,806 A1999
- Combustion chamber for gas turbine engine79US 5,626,017 AABB Research Ltd. · 1997