F23L 15/04
Arrangements of recuperators
F23L15/04 (Arrangements of recuperators) appears on 427 US grants and 317 published applications in this corpus.
Search patents in F23L- Granted patents
- 427
- Published applications
- 317
- Assignees
- 289
- Inventors
- 957
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 10 | 0 |
| 1978 | 10 | 0 |
| 1979 | 10 | 0 |
| 1980 | 7 | 0 |
| 1981 | 14 | 0 |
| 1982 | 7 | 0 |
| 1983 | 15 | 0 |
| 1984 | 17 | 0 |
| 1985 | 11 | 0 |
| 1986 | 20 | 0 |
| 1987 | 13 | 0 |
| 1988 | 10 | 0 |
| 1989 | 6 | 0 |
| 1990 | 10 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 5 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 13 | 1 |
| 2002 | 6 | 10 |
| 2003 | 5 | 6 |
| 2004 | 5 | 12 |
| 2005 | 5 | 7 |
| 2006 | 10 | 14 |
| 2007 | 2 | 5 |
| 2008 | 8 | 8 |
| 2009 | 2 | 13 |
| 2010 | 4 | 12 |
| 2011 | 9 | 12 |
| 2012 | 6 | 14 |
| 2013 | 7 | 14 |
| 2014 | 6 | 24 |
| 2015 | 2 | 14 |
| 2016 | 13 | 15 |
| 2017 | 16 | 15 |
| 2018 | 11 | 11 |
| 2019 | 19 | 17 |
| 2020 | 12 | 14 |
| 2021 | 17 | 10 |
| 2022 | 17 | 20 |
| 2023 | 8 | 16 |
| 2024 | 15 | 10 |
| 2025 | 11 | 13 |
| 2026 | 5 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Zero-power-consumption self-adaptive distributed waste heat recovery and utilization system for ethylene device8 Sep 2026US 12,729,854 B2Beijing Aerospace Energy Conservation and Environmental Protection Technology Co., Ltd
- Furnace operation method11 Aug 2026US 12,703,652 B2American Air Liquide, Inc.
- High-temperature ceramic combustor with thermophotovoltaic power generation11 Aug 2026US 12,706,559 B2Massachusetts Institute of Technology
- Thermal sludge to energy transformer14 Jul 2026US 12,680,695 B2Gate 5 Energy Partners, Inc.
- Radiant tube burner, radiant tube, and method of designing radiant tube burner14 Apr 2026US 12,601,476 B2Jfe Steel Corporation
- Furnace combustion gas sensing and control systems and methods1 Oct 2026US 2026/0298468 A1
- Flue gas circulation system for improving combustion characteristics and thermal characteristics of pulverized coal fired boiler3 Sep 2026US 2026/0258941 A1Xi'an Thermal Power Research Institute Co., Ltd.
- Forced Air Furnace with a Novel Multi-Path Heat Exchanger Section6 Aug 2026US 2026/0227096 A1
- Method for reducing nitrogen oxide emission and combustion system16 Jul 2026US 2026/0202054 A1China Petroleum & Chemical Corporation
- Apparatus and methods for boosting efficiency on recuperative radiant tube systems25 Jun 2026US 2026/0177239 A1Fives North American Combustion, Inc.
Most cited
By later US patents
- Single-ended recuperative radiant tube assembly and method157US 4,401,099 AW. B. Combustion, Inc. · 1983
- Recuperative burner with exhaust gas recirculation means118US 4,445,842 AThermal Systems Engineering, Inc. · 1984
- Heat recovery apparatus and methods of use107US 6,250,916 B1American Air Liquide, Inc. · 2001
- Method for apparatus for combusting fuel in a combustion chamber97US 5,154,599 A1992
- Ambient pressure gas turbine system96US 6,298,654 B12001