F23N 2231/02
Fail safe: using electric energy accumulators
Official title: using electric energy accumulators
F23N2231/02 (Fail safe: using electric energy accumulators) appears on 45 US grants and 30 published applications in this corpus.
Search patents in F23N- Granted patents
- 45
- Published applications
- 30
- Assignees
- 28
- Inventors
- 78
- Latest grant
- 15 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 1 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 2 |
| 2008 | 0 | 2 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 1 |
| 2012 | 1 | 0 |
| 2013 | 0 | 3 |
| 2014 | 0 | 2 |
| 2015 | 3 | 3 |
| 2016 | 0 | 0 |
| 2017 | 2 | 4 |
| 2018 | 4 | 2 |
| 2019 | 2 | 2 |
| 2020 | 0 | 0 |
| 2021 | 0 | 3 |
| 2022 | 1 | 1 |
| 2023 | 2 | 1 |
| 2024 | 1 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Flame control device for burners15 Jul 2025US 12,359,821 B2Sit S.P.A.
- Flame module for a spectrometer9 Apr 2024US 11,953,203 B2Thermo Fisher Scientific (Bremen) GmbH
- Method and system for controlling an ignition sequence for an intermittent flame-powered pilot combustion system8 Aug 2023US 11,719,436 B2Ademco Inc.
- Method and system for controlling an intermittent pilot water heater system8 Aug 2023US 11,719,467 B2Ademco Inc.
- Method and system for controlling an intermittent pilot water heater system1 Feb 2022US 11,236,930 B2Ademco Inc.
- Method and System for Controlling an Intermittent Pilot Water Heater System30 May 2024US 2024/0175605 A1Ademco Inc.
- Flame control device for burners5 Jan 2023US 2023/0003389 A1Sit S.P.A.
- Method and system for controlling an intermittent pilot water heater system12 May 2022US 2022/0146149 A1Ademco Inc.
- Indication apparatus to indicate the output level of a pilot flame and method29 Jul 2021US 2021/0231305 A1Sit S.P.A.
- Flame module for a spectrometer8 Jul 2021US 2021/0207802 A1Thermo Fisher Scientific (Bremen) GmbH
Most cited
By later US patents
- Hardwired or battery powered digital thermostat238US 6,315,211 B1Emerson Electric Co. · 2001
- Heater with flame powered logic supply circuit66US 4,984,981 AA. O. Smith Corporation · 1991
- Thermally amplified and stimulated emission radiator fiber matrix burner66US 5,356,487 AThe Quantum Group, Inc. · 1994
- Self-powered intermittent ignition and control system for gas combustion appliances65US 4,778,378 AThe Quantum Group, Inc. · 1988
- Self-contained electric igniter with rechargeable battery54US 4,131,413 AA. O. Smith Corporation · 1978