H02H 5/08
Responsive to abnormal fluid pressure, liquid level or liquid displacement
Official title: responsive to abnormal fluid pressure, liquid level or liquid displacement, e.g. Buchholz relays
H02H5/08 (Responsive to abnormal fluid pressure, liquid level or liquid displacement) appears on 196 US grants and 136 published applications in this corpus.
Search patents in H02H- Granted patents
- 196
- Published applications
- 136
- Assignees
- 118
- Inventors
- 335
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 6 | 0 |
| 1978 | 4 | 0 |
| 1979 | 1 | 0 |
| 1980 | 3 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 4 | 0 |
| 1988 | 3 | 0 |
| 1989 | 8 | 0 |
| 1990 | 7 | 0 |
| 1991 | 1 | 0 |
| 1992 | 7 | 0 |
| 1993 | 4 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 5 | 0 |
| 2000 | 4 | 0 |
| 2001 | 5 | 1 |
| 2002 | 3 | 8 |
| 2003 | 4 | 2 |
| 2004 | 5 | 6 |
| 2005 | 4 | 3 |
| 2006 | 1 | 6 |
| 2007 | 2 | 2 |
| 2008 | 6 | 4 |
| 2009 | 4 | 4 |
| 2010 | 4 | 3 |
| 2011 | 4 | 1 |
| 2012 | 2 | 2 |
| 2013 | 1 | 3 |
| 2014 | 2 | 10 |
| 2015 | 6 | 11 |
| 2016 | 4 | 8 |
| 2017 | 8 | 7 |
| 2018 | 8 | 8 |
| 2019 | 6 | 10 |
| 2020 | 12 | 10 |
| 2021 | 10 | 7 |
| 2022 | 8 | 7 |
| 2023 | 2 | 4 |
| 2024 | 4 | 3 |
| 2025 | 3 | 3 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Anti-explosion electronic device and method thereof22 Sep 2026US 12,744,373 B2Winmate Inc.
- Electric connection box16 Sep 2025US 12,416,541 B2Sumitomo Wiring Systems, Ltd.
- Waterproof detection circuit and battery pack15 Jul 2025US 12,362,555 B2Shanghai Baicheng Electric Equipment Manufacture Co., Ltd.
- Controller, air conditioner, and high-pressure protection circuit1 Apr 2025US 12,264,861 B2Hangzhou Leaderway Electronics Co., Ltd.
- Underwater device for acquiring images of the bed of a body of water9 Jul 2024US 12,030,601 B2Planblue GmbH
- Anti-explosion electronic device and method thereof4 Jun 2026US 2026/0155646 A1Winmate Inc.
- System and method for monitoring liquid coolant in an information handling system16 Apr 2026US 2026/0106450 A1Dell Products L. P.
- Power supply device12 Mar 2026US 2026/0074506 A1Chicony Power Technology Co., Ltd.
- Water ingress detection circuit and water ingress detection method20 Nov 2025US 2025/0357552 A1Shanghai Baicheng Electric Equipment Manufacture Co., Ltd.
- Monitoring device for a converter of a rail vehicle17 Jul 2025US 2025/0229635 A1Siemens Mobility GmbH
Most cited
By later US patents
- Reset lockout for circuit interrupting device193US 6,040,967 ALeviton Manufacturing Co., Inc. · 2000
- Circuit interrupting device with reverse wiring protection161US 6,246,558 B1Leviton Manufacturing Co., Inc. · 2001
- Circuit breaker with independent trip and reset lockout128US 6,288,882 B1Leviton Manufacturing Co., Inc. · 2001
- Safety devices118US 4,751,603 ASimatelex Manufactory Co., Ltd. · 1988
- Circuit interrupting device with reverse wiring protection118US 6,437,953 B2Leviton Manufacturing Co., Inc. · 2002