G01R 27/205
Measuring contact resistance of connections
Official title: {Measuring contact resistance of connections, e.g. of earth connections}
G01R27/205 (Measuring contact resistance of connections) appears on 178 US grants and 158 published applications in this corpus.
Search patents in G01R- Granted patents
- 178
- Published applications
- 158
- Assignees
- 150
- Inventors
- 400
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
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| 1976 | 2 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
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| 1983 | 1 | 0 |
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| 1992 | 4 | 0 |
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| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 4 | 0 |
| 2001 | 5 | 0 |
| 2002 | 2 | 1 |
| 2003 | 2 | 0 |
| 2004 | 4 | 6 |
| 2005 | 3 | 4 |
| 2006 | 11 | 7 |
| 2007 | 1 | 6 |
| 2008 | 2 | 5 |
| 2009 | 4 | 5 |
| 2010 | 5 | 3 |
| 2011 | 2 | 2 |
| 2012 | 4 | 3 |
| 2013 | 3 | 7 |
| 2014 | 1 | 6 |
| 2015 | 5 | 9 |
| 2016 | 7 | 5 |
| 2017 | 8 | 7 |
| 2018 | 12 | 7 |
| 2019 | 4 | 7 |
| 2020 | 6 | 12 |
| 2021 | 10 | 17 |
| 2022 | 16 | 7 |
| 2023 | 11 | 7 |
| 2024 | 4 | 9 |
| 2025 | 3 | 10 |
| 2026 | 3 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Automated electrical connector wear monitoring25 Aug 2026US 12,716,925 B2International Business Machines Corporation
- Electronic apparatus for performing a connection resistance test26 May 2026US 12,642,113 B2Samsung Display Co., Ltd.
- Apparatus, system and method of monitoring joints and switch conditions in an electrical network19 May 2026US 12,631,698 B2Eaton Intelligent Power Limited
- Battery test stand and method19 Aug 2025US 12,392,830 B2Hahn Automation GmbH
- Method and apparatus to generate an alert based on health of an earthing system15 Jul 2025US 12,360,146 B2
- Detection circuit and detection method24 Sep 2026US 2026/0287628 A1Novatek Microelectronics Corp.
- Apparatus and method for monitoring mobile grounding devices13 Aug 2026US 2026/0235652 A1Illinois Tool Works Inc.
- Contact Resistance Abnormality Diagnosis Method and Contact Resistance Abnormality Diagnosis System30 Jul 2026US 2026/0217128 A1LG Energy Solution, Ltd.
- Testing Method and Testing Loop for Contact Resistance2 Jul 2026US 2026/0186036 A1Yunnan Power Grid Co., Ltd. Lijiang Power Supply Bureau
- Method and devices for testing and monitoring the continuity of a pen conductor for a three-phase tn-c-s power supply system30 Apr 2026US 2026/0118445 A1Bender GmbH & Co. KG
Most cited
By later US patents
- Apparatus and method for electrical system measurements including battery condition, resistance of wires and connections, total electrical system quality and current flow139US 5,721,688 AMadill Technologies, Inc. · 1998
- Apparatus and method for detecting electrical resistance change in connectors to a remote mounted sensor91US 6,198,295 B1Honeywell Inc. · 2001
- Vehicle starting battery cold-cranking AMPS meter and method82US 6,097,193 AMadill Technologies, Inc. · 2000
- Thermal cycler for PCR69US 7,133,726 B1Applera Corporation · 2006
- Test probe assembly provides precise and repeatable contact forces35US 5,473,254 AAT&T Corp. · 1995