G01R 31/1254
Of gas-insulated power appliances or vacuum gaps
Official title: {of gas-insulated power appliances or vacuum gaps (testing switches G01R31/327; detecting electrical or mechanical defects in encased switchgear H02B13/065)}
G01R31/1254 (Of gas-insulated power appliances or vacuum gaps) appears on 92 US grants and 76 published applications in this corpus.
Search patents in G01R- Granted patents
- 92
- Published applications
- 76
- Assignees
- 69
- Inventors
- 271
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 5 | 0 |
| 1993 | 4 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 2 |
| 2002 | 3 | 2 |
| 2003 | 1 | 1 |
| 2004 | 0 | 1 |
| 2005 | 1 | 2 |
| 2006 | 1 | 4 |
| 2007 | 3 | 0 |
| 2008 | 1 | 3 |
| 2009 | 1 | 1 |
| 2010 | 2 | 5 |
| 2011 | 2 | 4 |
| 2012 | 2 | 1 |
| 2013 | 0 | 3 |
| 2014 | 4 | 8 |
| 2015 | 3 | 9 |
| 2016 | 5 | 5 |
| 2017 | 8 | 3 |
| 2018 | 2 | 0 |
| 2019 | 7 | 0 |
| 2020 | 2 | 4 |
| 2021 | 1 | 4 |
| 2022 | 3 | 3 |
| 2023 | 2 | 4 |
| 2024 | 5 | 2 |
| 2025 | 5 | 4 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Gis partial discharge diagnosing method, model training method, device and system11 Aug 2026US 12,704,538 B2Zhuhai Electac High Technology Co., Ltd.
- Device for simulating high-frequency current propagation of partial discharge of GIL/GIS16 Sep 2025US 12,416,661 B2Jiangsu Electric Power Research Institute Co., Ltd.
- High voltage transformer, method for producing a high voltage transformer and test system and test signal device comprising a high voltage transformer10 Jun 2025US 12,327,676 B2Omicron Electronics GmbH
- Method for determining the state of an electrical switchgear assembly, monitoring unit for an electrical switchgear assembly, and electrical switchgear assembly29 Apr 2025US 12,288,967 B2Siemens Aktiengesellschaft
- Gas density relay with online self-checking function and checking method therefor15 Apr 2025US 12,276,699 B2Shanghai Roye Electric Co., Ltd.
- System for detecting a partial discharge and a method of operating thereof14 May 2026US 2026/0133241 A1Osensa Innovations Corp.
- Device for synchronizing a partial discharge monitoring system9 Oct 2025US 2025/0314689 A1GE Infrastructure Technology LLC
- Partial discharge detector5 Jun 2025US 2025/0180624 A1Jfe Steel Corporation
- Device for simulating high-frequency current propagation of partial discharge of gil/gis27 Feb 2025US 2025/0067787 A1Jiangsu Electric Power Research Institute Co., Ltd.
- Ultra-high frequency partial discharge detection sensor having leak-tight structure9 Jan 2025US 2025/0012841 A1Sunglim Heavy Electric Co., Ltd.
Most cited
By later US patents
- Detection and suppression of electrical arcing50US 7,514,936 B2APPLIED Materials.Inc. · 2009
- Treating arcs in a plasma process44US 10,297,431 B2Trumpf Huettinger Sp. Z O. O. · 2019
- Abnormality diagnosing system and method for a high voltage power apparatus40US 5,107,447 AHitachi, Ltd. · 1992
- Abnormality diagnosing system and method for a high voltage power apparatus37US 5,214,595 AHitachi, Ltd. · 1993
- Method and apparatus for locating an abnormality in a gas-insulated electric device34US 5,146,170 AHitachi, Ltd. · 1992