G01R 31/40
Testing power supplies
Official title: Testing power supplies (testing photovoltaic devices H02S50/10)
G01R31/40 (Testing power supplies) appears on 2,326 US grants and 2,673 published applications in this corpus.
Search patents in G01R- Granted patents
- 2,326
- Published applications
- 2,673
- Assignees
- 1,079
- Inventors
- 5,506
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 4 | 0 |
| 1993 | 6 | 0 |
| 1994 | 11 | 0 |
| 1995 | 17 | 0 |
| 1996 | 22 | 0 |
| 1997 | 6 | 0 |
| 1998 | 20 | 0 |
| 1999 | 8 | 0 |
| 2000 | 9 | 0 |
| 2001 | 19 | 1 |
| 2002 | 11 | 5 |
| 2003 | 10 | 13 |
| 2004 | 11 | 22 |
| 2005 | 19 | 22 |
| 2006 | 12 | 17 |
| 2007 | 16 | 26 |
| 2008 | 22 | 39 |
| 2009 | 26 | 43 |
| 2010 | 24 | 57 |
| 2011 | 39 | 76 |
| 2012 | 56 | 88 |
| 2013 | 60 | 133 |
| 2014 | 76 | 158 |
| 2015 | 94 | 203 |
| 2016 | 170 | 190 |
| 2017 | 207 | 171 |
| 2018 | 150 | 164 |
| 2019 | 173 | 155 |
| 2020 | 192 | 174 |
| 2021 | 154 | 153 |
| 2022 | 156 | 146 |
| 2023 | 140 | 150 |
| 2024 | 124 | 196 |
| 2025 | 169 | 161 |
| 2026 | 69 | 110 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Instability fault monitoring method with self-learning strong generalization capability and instability fault monitoring apparatus15 Sep 2026US 12,736,593 B2Zhejiang University
- Distributed control device and distributed control system8 Sep 2026US 12,730,157 B2Seiko Epson Corporation
- Power supply system and abnormality determination method for precharge device in power supply system1 Sep 2026US 12,722,624 B2Toyota Jidosha Kabushiki Kaisha
- Method and device for detecting a short circuit of a semiconductor switch element in an inverter for energizing an electric drive in an electric vehicle or hybrid vehicle; inverter comprising such a device1 Sep 2026US 12,724,088 B2ZF Friedrichshafen AG
- Apparatus comprising a battery25 Aug 2026US 12,715,260 B2Thermo King Corporation
- Method and computer program for detecting a short-circuit in a power converter, controller for controlling a power converter, and computer-readable medium8 Oct 2026US 2026/0309803 A1
- Energy storage systems and methods for predictive health monitoring and fault detection for a power conversion system8 Oct 2026US 2026/0312404 A1LG Energy Solution, Ltd.
- Electrical isolation monitoring1 Oct 2026US 2026/0296243 A1Rivian IP Holdings, LLC
- Ground fault detection apparatus1 Oct 2026US 2026/0298996 A1General Electric Company
- Systems and methods for enhancement of digitally sampled electrical measurements1 Oct 2026US 2026/0302829 A1Schweitzer Engineering Laboratories, Inc.
Most cited
By later US patents
- Supervising and sequencing commonly driven power supplies with digital information1,026US 7,630,841 B2Texas Instruments Incorporated · 2009
- Device for testing solar home systems229US 6,351,130 B1Fraunhofer-Gesellschaft zur Foerderung der Angewandten Foschung E.V. · 2002
- Portable self powered line mountable device for measuring and transmitting ambient temperature191US 9,380,857 B22016
- Assembly for testing rectifiers and regulators of automotive alternators187US 5,336,993 A1994
- Voltage regulator tester185US 3,947,757 A1976