F23N 2227/38
Electrical resistance ignition
F23N2227/38 (Electrical resistance ignition) appears on 62 US grants and 14 published applications in this corpus.
Search patents in F23N- Granted patents
- 62
- Published applications
- 14
- Assignees
- 39
- Inventors
- 109
- Latest grant
- 24 May 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 6 | 0 |
| 1991 | 4 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 2 |
| 2004 | 1 | 2 |
| 2005 | 1 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 1 |
| 2017 | 0 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 2 |
| 2020 | 1 | 0 |
| 2021 | 1 | 0 |
| 2022 | 1 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods and apparatus to thermally destruct volatile organic compounds24 May 2022US 11,338,243 B2Illinois Tool Works Inc.
- Method for operating a fuel-operated vehicle heater12 Oct 2021US 11,142,041 B2Eberspächer Climate Control Systems GmbH & Co. KG
- Pre-mixed fuel burner with perforated flame holder20 Oct 2020US 10,808,927 B2Clearsign Technologies Corporation
- Control system for the ignition of a gas burner12 Feb 2013US 8,371,844 B2Coprecitec, S. L.
- Electrothermal device for ignition and flame detection in gas burners14 Aug 2007US 7,256,344 B2
- Temperature control system for hot surface igniter21 May 2026US 2026/0139835 A1Chongqing Le-Mark Technology Co
- Pilot burner hot surface igniter apparatus,systems, and methods6 Nov 2025US 2025/0341365 A1Oxbow Calcining LLC
- Methods and systems for using flame rectification to detect the presence of a burner flame27 Apr 2023US 2023/0128530 A1Scp R&D, LLC
- Methods and apparatus to thermally destruct volatile organic compounds31 Oct 2019US 2019/0329178 A1Illinois Tool Works Inc.
- Exhaust detecting safety switch assembly18 Jul 2019US 2019/0219264 A1
Most cited
By later US patents
- Integrated appliance control system186US 6,059,195 ATridelta Industries, Inc. · 2000
- Thermally amplified and stimulated emission radiator fiber matrix burner66US 5,356,487 AThe Quantum Group, Inc. · 1994
- Distributed appliance control system having fault isolation63US 6,728,600 B1Honeywell International Inc. · 2004
- Self-powered gas appliance50US 4,906,178 AThe Quantum Group, Inc. · 1990
- Fan control arrangement for a two stage furnace49US 5,027,789 AInter-City Products Corporation (USA) · 1991