H02H 3/325
Involving voltage comparison
Official title: {involving voltage comparison (H02H3/347 takes precedence)}
H02H3/325 (Involving voltage comparison) appears on 36 US grants and 48 published applications in this corpus.
Search patents in H02H- Granted patents
- 36
- Published applications
- 48
- Assignees
- 40
- Inventors
- 107
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 2 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 2 |
| 2013 | 0 | 0 |
| 2014 | 0 | 3 |
| 2015 | 1 | 1 |
| 2016 | 2 | 2 |
| 2017 | 1 | 4 |
| 2018 | 2 | 1 |
| 2019 | 3 | 3 |
| 2020 | 4 | 3 |
| 2021 | 3 | 2 |
| 2022 | 4 | 9 |
| 2023 | 4 | 5 |
| 2024 | 3 | 3 |
| 2025 | 5 | 2 |
| 2026 | 2 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Leakage protection circuit and lighting system1 Sep 2026US 12,726,013 B2Silergy Semiconductor Technology (Hangzhou) LTD
- Solid state breaker and power supply system14 Jul 2026US 12,683,381 B2Schneider Electric (China) Co., Ltd.
- Switch identification circuit and electric device27 May 2025US 12,313,702 B2Shenzhen Carku Technology Co., Limited
- Sensor with self supplied negative rail for battery pack measurement20 May 2025US 12,306,256 B2Caterpillar Inc.
- Bidirectional electronic circuit breaker22 Apr 2025US 12,283,807 B2Innomotics GmbH
- Selectable shunt voltage for circuit breaker6 Aug 2026US 2026/0229872 A1Vertiv Corporation
- Method and circuit arrangement for voltage protection18 Jun 2026US 2026/0171781 A1Analog Devices International Unlimited Company
- Fault type identification method in electrical power system21 May 2026US 2026/0142452 A1Hitachi Energy Ltd
- Leakage Protection Circuit, Electrical Equipment, and Leakage Protection Method30 Apr 2026US 2026/0121398 A1Joulwatt Technology Co., Ltd.
- Short-circuit protection circuit and lighting device19 Feb 2026US 2026/0051728 A1Shenzhen Billda Technology Co., Ltd
Most cited
By later US patents
- Electronic control equipment for motor vehicles, particularly, electronic brake control equipment22US 5,587,865 AKnorr-Bremse Systeme fur Nutzfahrzeuge GmbH · 1996
- System for detecting a falling electric power conductor and related methods18US 9,413,156 B2San Diego Gas & Electric Company · 2016
- Systems, methods, and devices for bipolar high voltage direct current ground fault detection6US 10,569,895 B2GE Aviation Systems LLC · 2020
- Switching power supply device and semiconductor device5US 10,879,811 B2Rohm Co., Ltd. · 2020
- Solid-state ground-fault circuit interrupter5US 11,721,508 B22023