F23N 2231/18
Detecting fluid leaks
F23N2231/18 (Detecting fluid leaks) appears on 77 US grants and 54 published applications in this corpus.
Search patents in F23N- Granted patents
- 77
- Published applications
- 54
- Assignees
- 40
- Inventors
- 174
- Latest grant
- 26 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 1 | 0 |
| 2003 | 1 | 1 |
| 2004 | 0 | 2 |
| 2005 | 1 | 2 |
| 2006 | 0 | 2 |
| 2007 | 1 | 1 |
| 2008 | 0 | 3 |
| 2009 | 0 | 4 |
| 2010 | 4 | 5 |
| 2011 | 1 | 6 |
| 2012 | 4 | 9 |
| 2013 | 1 | 1 |
| 2014 | 3 | 1 |
| 2015 | 4 | 4 |
| 2016 | 2 | 3 |
| 2017 | 4 | 2 |
| 2018 | 4 | 3 |
| 2019 | 2 | 0 |
| 2020 | 1 | 1 |
| 2021 | 0 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Furnace shut off device26 Aug 2025US 12,398,889 B1
- Systems and methods for predicting fuel circuit leaks18 Feb 2020US 10,563,594 B2General Electric Company
- System for a valve setup10 Dec 2019US 10,502,340 B2Honeywell International Inc.
- Low-powered system for driving a fuel control mechanism4 Jun 2019US 10,309,906 B2Ademco Inc.
- Valve operation and diagnosis14 Aug 2018US 10,048,160 B2Siemens Aktiengesellschaft
- Circuit including supercapacitor for supplying power to leak detection circuitry and controller in water heater12 Feb 2026US 2026/0043587 A1Ademco Inc.
- Fire pit incorporating safety features6 Apr 2023US 2023/0109646 A1Noble House Home Furnishing, LLC
- Automatic Smoke/Carbon Monoxide Power Cut-Off Method and System22 Jul 2021US 2021/0222877 A1
- Hvac monitoring apparatus and method20 Feb 2020US 2020/0056793 A1Sobie Systems Inc.
- Low-powered system for driving a fuel control mechanism1 Nov 2018US 2018/0313766 A1Honeywell International Inc.
Most cited
By later US patents
- Gas heater with alarm system91US 5,807,098 ADESA International, Inc. · 1998
- Leak test system68US 5,827,950 AWoodbury Leak Advisor Co. · 1998
- Thermally amplified and stimulated emission radiator fiber matrix burner66US 5,356,487 AThe Quantum Group, Inc. · 1994
- Device for detecting leakage in a fuel supply66US 5,715,786 ARobert Bosch GmbH · 1998
- Gas appliance detection apparatus65US 5,280,802 A1994