G01R 31/1272
Of cable, line or wire insulation
Official title: {of cable, line or wire insulation, e.g. using partial discharge measurements (locating faults in cables G01R31/083)}
G01R31/1272 (Of cable, line or wire insulation) appears on 574 US grants and 643 published applications in this corpus.
Search patents in G01R- Granted patents
- 574
- Published applications
- 643
- Assignees
- 417
- Inventors
- 1,485
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 3 | 0 |
| 1989 | 0 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 3 | 0 |
| 1995 | 8 | 0 |
| 1996 | 4 | 0 |
| 1997 | 3 | 0 |
| 1998 | 10 | 0 |
| 1999 | 4 | 0 |
| 2000 | 4 | 0 |
| 2001 | 8 | 4 |
| 2002 | 3 | 6 |
| 2003 | 9 | 10 |
| 2004 | 10 | 9 |
| 2005 | 10 | 8 |
| 2006 | 15 | 13 |
| 2007 | 12 | 9 |
| 2008 | 5 | 8 |
| 2009 | 4 | 14 |
| 2010 | 5 | 17 |
| 2011 | 11 | 20 |
| 2012 | 11 | 23 |
| 2013 | 14 | 10 |
| 2014 | 24 | 31 |
| 2015 | 10 | 31 |
| 2016 | 24 | 32 |
| 2017 | 26 | 36 |
| 2018 | 26 | 29 |
| 2019 | 37 | 37 |
| 2020 | 33 | 45 |
| 2021 | 44 | 43 |
| 2022 | 37 | 40 |
| 2023 | 41 | 42 |
| 2024 | 30 | 45 |
| 2025 | 44 | 44 |
| 2026 | 24 | 37 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Polyolefin formulation containing combination of voltage stabilizer compounds29 Sep 2026US 12,747,334 B2Dow Global Technologies LLC
- Automated electrical connector wear monitoring25 Aug 2026US 12,716,925 B2International Business Machines Corporation
- Insulation detection method and apparatus for conversion system25 Aug 2026US 12,716,931 B2Delta Electronics (Shanghai) Co., Ltd.
- Partial discharge monitoring system and partial discharge monitoring method18 Aug 2026US 12,710,465 B2Ls Cable & System Ltd.
- Method and apparatus for performing a surge test of electrical insulation11 Aug 2026US 12,704,551 B2Megger Instruments Limited
- Insulation monitoring device (imd), system for monitoring insulation and method for monitoring insulation of imd24 Sep 2026US 2026/0291216 A1Ls Electric Co., Ltd.
- Method for detecting presence of an electric arc and associated device17 Sep 2026US 2026/0276691 A1Centre National De La Recherche Scientifique
- Bushing diagnostic system17 Sep 2026US 2026/0276692 A1Samsung Electronics Co., Ltd.
- Arc fault protection for vehicles10 Sep 2026US 2026/0269599 A1GM Global Technology Operations LLC
- Test device and method for testing a high-voltage or medium-voltage cable and method for testing a transformer arranged in a test device27 Aug 2026US 2026/0251728 A1B2 Electronics GmbH
Most cited
By later US patents
- Non-intrusive cable fault detection and methods218US 9,103,864 B2University of South Carolina · 2015
- Method and apparatus for detecting arcing in AC power systems by monitoring high frequency noise203US 5,729,145 ASiemens Energy & Automation, Inc. · 1998
- Method and apparatus for detecting arcing in alternating-current power systems by monitoring high-frequency noise158US 5,434,509 A1995
- Trip indicators for circuit protection devices143US 5,847,913 ASquare D Company · 1998
- Method and apparatus for detecting arcing in electrical connections by monitoring high frequency noise130US 5,223,795 A1993