G01R 31/52
Testing for short-circuits, leakage current or ground faults
G01R31/52 (Testing for short-circuits, leakage current or ground faults) appears on 3,353 US grants and 3,689 published applications in this corpus.
Search patents in G01R- Granted patents
- 3,353
- Published applications
- 3,689
- Assignees
- 1,558
- Inventors
- 7,620
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 9 | 0 |
| 1977 | 17 | 0 |
| 1978 | 13 | 0 |
| 1979 | 19 | 0 |
| 1980 | 14 | 0 |
| 1981 | 11 | 0 |
| 1982 | 8 | 0 |
| 1983 | 14 | 0 |
| 1984 | 10 | 0 |
| 1985 | 21 | 0 |
| 1986 | 15 | 0 |
| 1987 | 21 | 0 |
| 1988 | 11 | 0 |
| 1989 | 27 | 0 |
| 1990 | 13 | 0 |
| 1991 | 24 | 0 |
| 1992 | 18 | 0 |
| 1993 | 12 | 0 |
| 1994 | 11 | 0 |
| 1995 | 24 | 0 |
| 1996 | 18 | 0 |
| 1997 | 22 | 0 |
| 1998 | 27 | 0 |
| 1999 | 27 | 0 |
| 2000 | 19 | 0 |
| 2001 | 37 | 8 |
| 2002 | 37 | 17 |
| 2003 | 22 | 30 |
| 2004 | 27 | 36 |
| 2005 | 28 | 37 |
| 2006 | 49 | 36 |
| 2007 | 27 | 44 |
| 2008 | 24 | 53 |
| 2009 | 34 | 71 |
| 2010 | 48 | 87 |
| 2011 | 58 | 94 |
| 2012 | 67 | 105 |
| 2013 | 78 | 120 |
| 2014 | 76 | 149 |
| 2015 | 111 | 183 |
| 2016 | 137 | 205 |
| 2017 | 192 | 178 |
| 2018 | 166 | 183 |
| 2019 | 194 | 199 |
| 2020 | 199 | 212 |
| 2021 | 222 | 251 |
| 2022 | 229 | 240 |
| 2023 | 213 | 275 |
| 2024 | 223 | 309 |
| 2025 | 276 | 297 |
| 2026 | 154 | 270 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Self-test auto monitor ground fault circuit interrupter (GFCI) with power denial6 Oct 2026US 12,754,232 B2Hubbell Incorporated
- Low current leakage measurement on a high current unified static and dynamic characterization platform29 Sep 2026US 12,748,145 B2Keithley Instruments, LLC
- Battery internal-short-circuit detection method, electronic device, and storage medium29 Sep 2026US 12,748,162 B2Dongguan NVT Technology Limited
- Integrated active isolation measurement22 Sep 2026US 12,742,804 B2Infineon Technologies AG
- System and method for diagnosing vehicle power distribution using battery-terminal and ECU-reported voltage correlation22 Sep 2026US 12,742,833 B1Innova Electronics Corporation
- Method and computer program for detecting a short-circuit in a power converter, controller for controlling a power converter, and computer-readable medium8 Oct 2026US 2026/0309803 A1
- Detecting power grid shorts on regulated voltage domains1 Oct 2026US 2026/0299000 A1International Business Machines Corporation
- Battery Diagnosis Apparatus and Operating Method Thereof1 Oct 2026US 2026/0299043 A1LG Energy Solution, Ltd.
- Trailer lighting monitoring, inspection, diagnostic, and compliance system24 Sep 2026US 2026/0285226 A1
- Flux gate-type residual current detection device and control method of same device24 Sep 2026US 2026/0287620 A1Ls Electric Co., Ltd.
Most cited
By later US patents
- Method and system for continuity testing of medical electrodes286US 7,766,905 B2Covidien LP · 2010
- Electrosurgical safety circuit and method of using same235US 4,094,320 AValleylab, Inc. · 1978
- Electrosurgical apparatus for laparoscopic and like procedures227US 5,688,269 AElectroscope, Inc. · 1997
- Battery measurement method204US 5,760,587 AFord Global Technologies, LLC · 1998
- Load analysis system for fault detection203US 5,600,526 AThe Texas A&M University System · 1997