H01H 9/50
Means for detecting the presence of an arc or discharge
H01H9/50 (Means for detecting the presence of an arc or discharge) appears on 69 US grants and 74 published applications in this corpus.
Search patents in H01H- Granted patents
- 69
- Published applications
- 74
- Assignees
- 57
- Inventors
- 171
- Latest grant
- 24 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 1 | 2 |
| 2008 | 1 | 2 |
| 2009 | 0 | 0 |
| 2010 | 1 | 4 |
| 2011 | 3 | 3 |
| 2012 | 3 | 2 |
| 2013 | 0 | 0 |
| 2014 | 0 | 5 |
| 2015 | 3 | 3 |
| 2016 | 4 | 1 |
| 2017 | 1 | 7 |
| 2018 | 4 | 7 |
| 2019 | 6 | 3 |
| 2020 | 5 | 4 |
| 2021 | 2 | 8 |
| 2022 | 8 | 5 |
| 2023 | 4 | 7 |
| 2024 | 4 | 2 |
| 2025 | 3 | 6 |
| 2026 | 1 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Arc flash mitigation device24 Feb 2026US 12,562,559 B2Eaton Intelligent Power Limited
- Method for partial discharge recognition in high voltage applications and unit using the method28 Oct 2025US 12,455,311 B2HSP Hochspannungsgeräte GmbH
- Circuit interrupting device having printed circuit board coils12 Aug 2025US 12,387,884 B2Hubbell Incorporated
- Systems and methods for detecting and identifying arcing based on numerical analysis20 May 2025US 12,308,632 B2Hubbell Incorporated
- Hybrid arc flash mitigation system17 Dec 2024US 12,170,439 B2Eaton Intelligent Power Limited
- Device for sensing partial discharge of transformer30 Jul 2026US 2026/0219308 A1Hd Hyundai Electric Co., Ltd.
- Arc flash mitigation device4 Jun 2026US 2026/0155644 A1Eaton Intelligent Power Limited
- Fault Arc Protection: Circuit Breaker System to Interrupt Faulty Section5 Mar 2026US 2026/0066644 A1ABB Schweiz AG
- Circuit interrupting device having printed circuit board coils27 Nov 2025US 2025/0364191 A1
- Apparatus, system, and computer-implemented method for automatically determining degradation of an electrical contactor6 Nov 2025US 2025/0341575 A1Honeywell International Inc.
Most cited
By later US patents
- Method and apparatus for detection and control of dc arc faults184US 8,179,147 B2Enphase Energy, Inc. · 2012
- Instantaneous trip device of a circuit breaker119US 5,103,198 AMerlin Gerin · 1992
- Circuit breaker fitted with a device for indicating a short circuit92US 4,375,022 AAlsthom-Unelec · 1983
- Detection of light-producing events31US 4,516,022 AASEA Aktiebolag · 1985
- Relay control apparatus16US 5,064,998 AWhirlpool Corporation · 1991