G01R 31/3272
Apparatus, systems or circuits therefor
Official title: {Apparatus, systems or circuits therefor (G01R31/3275 takes precedence)}
G01R31/3272 (Apparatus, systems or circuits therefor) appears on 329 US grants and 361 published applications in this corpus.
Search patents in G01R- Granted patents
- 329
- Published applications
- 361
- Assignees
- 191
- Inventors
- 838
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 6 | 0 |
| 2002 | 4 | 3 |
| 2003 | 1 | 3 |
| 2004 | 2 | 5 |
| 2005 | 5 | 5 |
| 2006 | 4 | 2 |
| 2007 | 5 | 3 |
| 2008 | 3 | 4 |
| 2009 | 2 | 3 |
| 2010 | 2 | 10 |
| 2011 | 1 | 9 |
| 2012 | 9 | 12 |
| 2013 | 6 | 7 |
| 2014 | 4 | 13 |
| 2015 | 9 | 14 |
| 2016 | 12 | 28 |
| 2017 | 25 | 30 |
| 2018 | 17 | 23 |
| 2019 | 27 | 16 |
| 2020 | 25 | 31 |
| 2021 | 18 | 28 |
| 2022 | 29 | 27 |
| 2023 | 25 | 24 |
| 2024 | 27 | 22 |
| 2025 | 22 | 24 |
| 2026 | 16 | 15 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Ion pump monitored vacuum interrupter6 Oct 2026US 12,755,626 B2Southern States, LLC
- Magnetic field-based detection method and system for circuit breaker switching operation and arc duration detection8 Sep 2026US 12,730,153 B2Georgia Tech Research Corporation
- Process for detection of degradation of a switching device comprising an electromagnetic actuator1 Sep 2026US 12,724,072 B2Schneider Electric Industries SAS
- Shutdown device detection and control method, and detector11 Aug 2026US 12,704,549 B2Altenergy Power System Inc.
- Device and thermal tester for thermal testing dies of an integrated circuit9 Jun 2026US 12,650,462 B2AEM Singapore Pte. Ltd.
- System and method for determining alignment faulted mobile irrigation tower8 Oct 2026US 2026/0305546 A1Lindsay Corporation
- Simulation verification method and apparatus for gas density relay27 Aug 2026US 2026/0251713 A1Shanghai Roye Electric Co., Ltd.
- Method and apparatus for calculating electric arc radiation energy of electric power switch device, and device20 Aug 2026US 2026/0243827 A1Electric Power Research Institute. China Southern Power Grid
- Current measuring system for switching devices arranged in a matrix configuration23 Jul 2026US 2026/0211011 A1Eaton Intelligent Power Limited
- Commissioning of a test arrangement21 May 2026US 2026/0140160 A1Omicron Electronics GmbH
Most cited
By later US patents
- Method and apparatus for testing an AFCI/GFCI circuit breaker121US 6,426,632 B12002
- Test circuit for an AFCI/GFCI circuit breaker81US 6,191,589 B12001
- Hand-held tester for receptacle ground fault circuit interrupters77US 5,642,052 AEtcon Corporation · 1997
- Method and device for testing differential protection relays or differential protection relay systems68US 6,396,279 B1Omicron Electronics GmbH · 2002
- Means and method for testing and monitoring a circuit breaker panel assembly62US 5,270,658 A1993