F23N 2231/22
Using warning lamps
Official title: using warning lamps
F23N2231/22 (Using warning lamps) appears on 46 US grants and 16 published applications in this corpus.
Search patents in F23N- Granted patents
- 46
- Published applications
- 16
- Assignees
- 36
- Inventors
- 84
- Latest grant
- 26 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 4 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 6 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 1 |
| 2003 | 2 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 2 |
| 2007 | 2 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 1 |
| 2014 | 0 | 0 |
| 2015 | 2 | 3 |
| 2016 | 0 | 1 |
| 2017 | 3 | 1 |
| 2018 | 4 | 3 |
| 2019 | 2 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Furnace shut off device26 Aug 2025US 12,398,889 B1
- Gas cooking appliance with ignition position indicator1 Nov 2022US 11,486,574 B2Midea Group Co., Ltd.
- Wireless carbon monoxide furnace shutoff system10 Sep 2019US 10,408,471 B1
- Low-powered system for driving a fuel control mechanism4 Jun 2019US 10,309,906 B2Ademco Inc.
- Multi-fuel-canister insect repellent system27 Nov 2018US 10,137,464 B2Thermacell Repellents, Inc.
- Gas cooking appliance with ignition position indicator9 Jun 2022US 2022/0178538 A1Midea Group Co., Ltd.
- Indication apparatus to indicate the output level of a pilot flame and method29 Jul 2021US 2021/0231305 A1Sit S.P.A.
- Low-powered system for driving a fuel control mechanism1 Nov 2018US 2018/0313766 A1Honeywell International Inc.
- Multi-fuel-canister insect repellent system3 May 2018US 2018/0117610 A1Thermacell Repellents, Inc.
- Low-powered system for driving a fuel control mechanism4 Jan 2018US 2018/0003643 A1Honeywell International Inc.
Most cited
By later US patents
- System for time programming of states by communicating time data via a continuously rotatable potentiometer153US 4,837,731 AHoneywell Inc. · 1989
- Gas heater with alarm system91US 5,807,098 ADESA International, Inc. · 1998
- Status indicator for self-energizing burner control system72US 4,770,629 AHoneywell Inc. · 1988
- Electronic gas cooktop control with simmer system and method thereof69US 7,255,100 B2CompuValve LLC · 2007
- Heater with flame powered logic supply circuit66US 4,984,981 AA. O. Smith Corporation · 1991