F24H 9/0026
In combustion gas channels
Official title: {in combustion gas channels}
F24H9/0026 (In combustion gas channels) appears on 218 US grants and 242 published applications in this corpus.
Search patents in F24H- Granted patents
- 218
- Published applications
- 242
- Assignees
- 123
- Inventors
- 431
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 4 | 3 |
| 2003 | 1 | 3 |
| 2004 | 4 | 3 |
| 2005 | 3 | 2 |
| 2006 | 2 | 4 |
| 2007 | 2 | 0 |
| 2008 | 2 | 6 |
| 2009 | 1 | 11 |
| 2010 | 6 | 10 |
| 2011 | 2 | 5 |
| 2012 | 2 | 12 |
| 2013 | 4 | 6 |
| 2014 | 9 | 12 |
| 2015 | 2 | 8 |
| 2016 | 9 | 18 |
| 2017 | 8 | 13 |
| 2018 | 14 | 15 |
| 2019 | 15 | 17 |
| 2020 | 12 | 15 |
| 2021 | 17 | 16 |
| 2022 | 15 | 17 |
| 2023 | 14 | 15 |
| 2024 | 10 | 17 |
| 2025 | 11 | 5 |
| 2026 | 9 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Water heater having highly efficient and compact heat exchanger6 Oct 2026US RE51,053 E1A. O. Smith Corporation
- Water tank assembly for heating device, and heating device25 Aug 2026US 12,716,614 B2Wuhu Midea Kitchen and Bath Appliances Mfg. Co., Ltd.
- Burner and water heater comprising same25 Aug 2026US 12,716,615 B2Kyungdong Navien Co., Ltd.
- Condensation heat exchanger7 Jul 2026US 12,674,602 B2Sermeta
- Heat exchanger baffles and methods for manufacturing the same19 May 2026US 12,631,409 B2Bradford White Corporation
- Exhaust Flue for Water Heater24 Sep 2026US 2026/0287210 A1Rheem Manufacturing Company
- Exhaust adapter27 Aug 2026US 2026/0251300 A1Rinnai Corporation
- Single pass high-efficiency condensing water heater27 Aug 2026US 2026/0251350 A1Bradford White Corporation
- Combustion chamber assembly25 Jun 2026US 2026/0177284 A1Kyungdong Navien Co., Ltd.
- Fired process heater with a manifold support assembly11 Jun 2026US 2026/0160415 A1Zeeco, Inc.
Most cited
By later US patents
- Heat exchanger tube with integral restricting and turbulating structure35US 7,255,155 B2Beckett Gas, Inc. · 2007
- Multiple stage heating apparatus31US 5,989,020 ALochinvar, LLC · 1999
- Rib design for boiler tubes29US 4,314,587 ACombustion Engineering, Inc. · 1982
- Liquid fuel-fired water heating tank25US 4,380,215 A1983
- Water heater flue system21US 6,286,465 B1AOS Holding Company · 2001