G01R 31/3275
Fault detection or status indication
Official title: {Fault detection or status indication}
G01R31/3275 (Fault detection or status indication) appears on 261 US grants and 298 published applications in this corpus.
Search patents in G01R- Granted patents
- 261
- Published applications
- 298
- Assignees
- 189
- Inventors
- 792
- Latest grant
- 1 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 3 | 0 |
| 2003 | 1 | 2 |
| 2004 | 2 | 1 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 4 |
| 2011 | 1 | 3 |
| 2012 | 1 | 4 |
| 2013 | 2 | 7 |
| 2014 | 4 | 9 |
| 2015 | 7 | 8 |
| 2016 | 8 | 17 |
| 2017 | 14 | 23 |
| 2018 | 13 | 22 |
| 2019 | 24 | 18 |
| 2020 | 19 | 28 |
| 2021 | 18 | 27 |
| 2022 | 26 | 32 |
| 2023 | 23 | 28 |
| 2024 | 27 | 25 |
| 2025 | 28 | 25 |
| 2026 | 17 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Process for detection of degradation of a switching device comprising an electromagnetic actuator1 Sep 2026US 12,724,072 B2Schneider Electric Industries SAS
- End of life monitoring for a solid-state circuit breaker11 Aug 2026US 12,706,267 B2Siemens Industry, Inc.
- Apparatus and method for diagnosing a failure of an inverter23 Jun 2026US 12,665,492 B2Ajou University Industry-Academic Cooperation Foundation
- Electronic circuit to verify the integrity of a switch16 Jun 2026US 12,658,908 B2Borgwarner Orsenigo S.R.L.
- Fault current limiting solid-state switching device26 May 2026US 12,640,557 B2
- System and method for determining alignment faulted mobile irrigation tower8 Oct 2026US 2026/0305546 A1Lindsay Corporation
- Electric testing systems8 Oct 2026US 2026/0309779 A1
- System and method for fault diagnosis for cascaded h-bridge (chb) converter based switched reluctance motor (srm) drive systems20 Aug 2026US 2026/0243828 A1Enedym Inc.
- System and method for detecting failures of solid-state switches in a main circuit28 May 2026US 2026/0147043 A1Schneider Electric Industries SAS
- Battery monitoring system and method28 May 2026US 2026/0147054 A1Pratt & Whitney Canada Corp.
Most cited
By later US patents
- Method of precisely determining the location of a fault on an electrical transmission system74US 6,822,457 B22004
- Remote sensor and method for detecting the on/off status of an automatically controlled appliance57US 5,506,573 AServer Technology, Inc. · 1996
- Device for monitoring the functon of an electric load, its drive and the associated connections44US 5,311,138 ARobert Bosch GmbH · 1994
- Vibro-acoustic signature treatment process in high-voltage electromechanical switching system34US 6,215,408 B1Hydro-Quebec · 2001
- Monitoring of the wear of sliding electrical contacts and its application to the state-dependent and/or predictive maintenance of a device having sliding electrical contacts33US 6,034,531 AEurocopter · 2000