G01R 1/22
Tong testers acting as secondary windings of current transformers
G01R1/22 (Tong testers acting as secondary windings of current transformers) appears on 241 US grants and 197 published applications in this corpus.
Search patents in G01R- Granted patents
- 241
- Published applications
- 197
- Assignees
- 126
- Inventors
- 375
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 4 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 1 | 0 |
| 1987 | 5 | 0 |
| 1988 | 2 | 0 |
| 1989 | 8 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 4 | 0 |
| 1996 | 5 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 2 | 0 |
| 2002 | 3 | 0 |
| 2003 | 5 | 3 |
| 2004 | 0 | 0 |
| 2005 | 2 | 3 |
| 2006 | 1 | 6 |
| 2007 | 6 | 7 |
| 2008 | 3 | 3 |
| 2009 | 3 | 7 |
| 2010 | 6 | 11 |
| 2011 | 5 | 9 |
| 2012 | 11 | 21 |
| 2013 | 7 | 18 |
| 2014 | 14 | 26 |
| 2015 | 23 | 11 |
| 2016 | 20 | 10 |
| 2017 | 11 | 6 |
| 2018 | 9 | 14 |
| 2019 | 12 | 12 |
| 2020 | 13 | 7 |
| 2021 | 5 | 5 |
| 2022 | 4 | 1 |
| 2023 | 5 | 6 |
| 2024 | 1 | 3 |
| 2025 | 5 | 4 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Measurement apparatus and measurement method19 May 2026US 12,631,673 B2Yokogawa Electric Corporation
- Clamp for measuring AC and DC leakage currents6 Jan 2026US 12,517,154 B2Chauvin Arnoux
- Method and apparatus for calibrating a measurement device25 Nov 2025US 12,481,015 B2Solaredge Technologies Ltd.
- Tool and method for handling a part5 Aug 2025US 12,381,340 B2Cantega Technologies Inc.
- Voltage detection probe and electrode mounting tool17 Jun 2025US 12,332,281 B2Daikin Industries, Ltd.
- Concentrator for a leakage current sensor30 Jul 2026US 2026/0219334 A1Allegro MicroSystems, LLC
- Smart Sensor Mount Systems23 Jul 2026US 2026/0211003 A1HellermannTyton Corporation
- Clamp sensor and measuring device16 Apr 2026US 2026/0104438 A1Hioki E. E. Corporation
- Non-invasive wire testing device5 Mar 2026US 2026/0063667 A1Horizon Global Americas Inc.
- Current sensor system21 Aug 2025US 2025/0264502 A1Analog Devices International Unlimited Company
Most cited
By later US patents
- System for rating electric power transmission lines and equipment329US 5,341,088 A1994
- Electrical power line and substation monitoring apparatus and systems325US 4,758,962 A1988
- Transponder unit for measuring temperature and current on live transmission lines313US 4,384,289 AGeneral Electric Company · 1983
- Current sensor assembly283US 7,557,563 B2Power Measurement Ltd. · 2009
- Electrical power line parameter measurement apparatus and systems, including compact, line-mounted modules254US 4,709,339 A1987