F23N 2223/30
Switches
F23N2223/30 (Switches) appears on 24 US grants and 18 published applications in this corpus.
Search patents in F23N- Granted patents
- 24
- Published applications
- 18
- Assignees
- 17
- Inventors
- 48
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 2 | 2 |
| 2004 | 3 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 1 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 1 | 2 |
| 2015 | 0 | 1 |
| 2016 | 0 | 1 |
| 2017 | 1 | 0 |
| 2018 | 1 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 0 | 3 |
| 2022 | 0 | 1 |
| 2023 | 3 | 3 |
| 2024 | 2 | 1 |
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Control unit for detecting a flame in operation using flame monitors suitable for burners and flame monitoring system1 Sep 2026US 12,723,756 B2BFI Automation Mindermann GmbH
- Hybrid residential heater and control system therefor4 Mar 2025US 12,241,656 B2Flexchanger Technologies Inc.
- Minimum ignition period for gas burners23 Jul 2024US 12,044,406 B2Midea Group Co., Ltd.
- Control circuit for an electromagnetic valve, gas burning system, method for monitoring a switching state of an electromagnetic valve and method for operating a gas burning system2 Apr 2024US 11,946,652 B2Diehl Ako Stiftung & Co.KG
- Switching assembly, switching mechanism and gas cooker26 Dec 2023US 11,852,339 B2Electrolux Appliances Aktiebolag
- Hybrid residential heater and control system therefor25 Jan 2024US 2024/0027102 A1Flexchanger Technologies Inc.
- Electronic Gas/Air Burner Modulating Control15 Jun 2023US 2023/0184433 A1Wayne/Scott Fetzer Company
- Control unit for detecting a flame in operation using flame monitors suitable for burners and flame monitoring system25 May 2023US 2023/0160571 A1BFI Automation Mindermann GmbH
- Minimum ignition period for gas burners30 Mar 2023US 2023/0095549 A1Midea Group Co., Ltd.
- Switching assembly, switching mechanism and gas cooker27 Jan 2022US 2022/0026064 A1Electrolux Appliances Aktiebolag
Most cited
By later US patents
- Fault-tolerant multi-point flame sense circuit127US 6,794,771 B2Ranco Incorporated of Delaware · 2004
- Damper control device12US 6,749,124 B22004
- Smart gas burner system for cooking appliance12US 8,475,162 B2Whirlpool Corporation · 2013
- Furnace apparatus and process for control thereof10US 4,005,820 A1977
- Automatic safety gas heating device8US 4,429,682 A1984