G01R 31/2827
Testing of electronic protection circuits
Official title: {Testing of electronic protection circuits (testing switches G01R31/327; checking alarm systems G08B29/00; self test of summation current transformers H02H3/335)}
G01R31/2827 (Testing of electronic protection circuits) appears on 118 US grants and 129 published applications in this corpus.
Search patents in G01R- Granted patents
- 118
- Published applications
- 129
- Assignees
- 98
- Inventors
- 311
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 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 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 1 | 2 |
| 2009 | 1 | 0 |
| 2010 | 0 | 1 |
| 2011 | 1 | 2 |
| 2012 | 1 | 3 |
| 2013 | 0 | 4 |
| 2014 | 2 | 11 |
| 2015 | 6 | 7 |
| 2016 | 7 | 10 |
| 2017 | 15 | 10 |
| 2018 | 6 | 4 |
| 2019 | 10 | 10 |
| 2020 | 12 | 10 |
| 2021 | 6 | 11 |
| 2022 | 9 | 11 |
| 2023 | 15 | 10 |
| 2024 | 11 | 9 |
| 2025 | 5 | 7 |
| 2026 | 7 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Monitoring solutions for electrical systems18 Jun 2026US 2026/0169070 A1
- Monitoring solutions for electrical systems18 Jun 2026US 2026/0169071 A1
- Method performed by a differential relaying protection apparatus21 May 2026US 2026/0140173 A1Schneider Electric Industries SAS
- Testing device and testing method for energy dissipation device in power transmission system23 Apr 2026US 2026/0110729 A1State Grid Jiangsu Electric Power Co., Ltd. Research Institute
Most cited
By later US patents
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- Auto-monitoring redundancy for enhanced miniature circuit breaker reliability6US 10,326,264 B1Schneider Electric USA, Inc. · 2019
- Method and apparatus for calculating voltage drop6US 7,469,204 B2SimplexGrinnell LP · 2008
- Lightning protection for wind turbines6US 7,988,415 B2General Electric Company · 2011