F22B 37/42
Applications, arrangements or dispositions of alarm or automatic safety devices
Official title: Applications, arrangements or dispositions of alarm or automatic safety devices (for feed-water heaters F22D1/14 {; emergency feed-water supply F22D11/003})
F22B37/42 (Applications, arrangements or dispositions of alarm or automatic safety devices) appears on 103 US grants and 77 published applications in this corpus.
Search patents in F22B- Granted patents
- 103
- Published applications
- 77
- Assignees
- 92
- Inventors
- 287
- Latest grant
- 12 Aug 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 5 | 0 |
| 1987 | 4 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 4 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 3 | 0 |
| 2001 | 4 | 0 |
| 2002 | 2 | 1 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 2 |
| 2007 | 0 | 1 |
| 2008 | 2 | 5 |
| 2009 | 0 | 3 |
| 2010 | 1 | 1 |
| 2011 | 7 | 2 |
| 2012 | 1 | 3 |
| 2013 | 0 | 3 |
| 2014 | 1 | 1 |
| 2015 | 3 | 3 |
| 2016 | 4 | 5 |
| 2017 | 3 | 7 |
| 2018 | 4 | 3 |
| 2019 | 4 | 5 |
| 2020 | 5 | 6 |
| 2021 | 2 | 2 |
| 2022 | 3 | 11 |
| 2023 | 5 | 3 |
| 2024 | 4 | 5 |
| 2025 | 2 | 2 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- F22B 37/421Arrangements for detecting leaks39
- F22B 37/44Of safety valves19
- F22B 37/46Responsive to low or high water level16
- F22B 37/47Responsive to abnormal temperature6
- F22B 37/426Feed-water supply alarm devices using electric signals2
- F22B 37/428Feed-water supply alarm devices using dilatation of solids or liquids2
- F22B 37/423Valves for testing steam generators1
- F22B 37/425Feed-water supply alarm devices using floats0
Recent patents
- Anomaly detection device and display device12 Aug 2025US 12,385,635 B2IHI Corporation
- Circuit for detecting a leak in a water heater device and activating an alarm device18 Feb 2025US 12,228,311 B2Ademco Inc.
- Steam discharge pipe blowback protection system15 Oct 2024US 12,116,907 B1General Electric Company
- Method and apparatus for vaporizing a liquid27 Aug 2024US 12,072,065 B2L Air Liquide, Societe Anonyme Pour L'Etude et L'Exploitation des Procedes Georges Claude
- Intelligent prediction of boiler blowdown27 Aug 2024US 12,072,094 B2Saudi Arabian Oil Company
- Superheated steam generator21 May 2026US 2026/0139828 A1Tokuden Co., Ltd.
- Superheated steam generator21 May 2026US 2026/0139829 A1Tokuden Co., Ltd.
- Circuit for detecting a leak in a water heater device and activating an alarm device12 Jun 2025US 2025/0189171 A1Resideo LLC
- Foam detection technique-algorithm for steam boilers using lwco device6 Mar 2025US 2025/0075900 A1Fluid Handling LLC
- Steam generation system and steam apparatus19 Dec 2024US 2024/0416392 A1New Watt (Fujian) High-Tech Co. Ltd
Most cited
By later US patents
- Acoustic emission signal collector manifold53US 5,351,655 AThe Babcock & Wilcox Company · 1994
- Boiler system leak detection39US 5,320,967 ANalco Chemical Company · 1994
- Method for detecting steam leakage in heat-exchanger having circulation tubes surrounded by liquid sodium and devices for the application of said method28US 3,975,943 AElectricite de France (Service National) · 1976
- Passive safety device for emergency steam dump and heat removal for steam generators in nuclear power reactors27US 4,687,626 A1987
- Detecting leaks in a heat exchanger in operation27US 4,688,627 AElectricite de France · 1987