G01R 19/16547
Voltage or current in ac supplies
Official title: {voltage or current in AC supplies (switching for protection H02H; circuits for emergency power supply H02J9/00)}
G01R19/16547 (Voltage or current in ac supplies) appears on 266 US grants and 297 published applications in this corpus.
Search patents in G01R- Granted patents
- 266
- Published applications
- 297
- Assignees
- 213
- Inventors
- 601
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 1 |
| 2003 | 1 | 0 |
| 2004 | 2 | 1 |
| 2005 | 0 | 2 |
| 2006 | 4 | 8 |
| 2007 | 5 | 5 |
| 2008 | 4 | 7 |
| 2009 | 1 | 9 |
| 2010 | 6 | 3 |
| 2011 | 4 | 3 |
| 2012 | 1 | 9 |
| 2013 | 6 | 7 |
| 2014 | 3 | 5 |
| 2015 | 6 | 11 |
| 2016 | 8 | 10 |
| 2017 | 11 | 13 |
| 2018 | 17 | 16 |
| 2019 | 20 | 45 |
| 2020 | 29 | 19 |
| 2021 | 26 | 30 |
| 2022 | 28 | 28 |
| 2023 | 16 | 20 |
| 2024 | 20 | 17 |
| 2025 | 20 | 16 |
| 2026 | 5 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Apparatus and method for detecting an electric current flow through a diode, and electric drive system22 Sep 2026US 12,741,540 B2Robert Bosch GmbH
- Integrated circuit for power supply and power supply system21 Jul 2026US 12,689,288 B2Fuji Electric Co., Ltd.
- Method and apparatus of performing failure detection on ac input voltage, and power supply system7 Jul 2026US 12,674,847 B2Murata Manufacturing Co., Ltd.
- Monitoring assembly and system having a monitoring assembly14 Apr 2026US 12,601,768 B2Truma Geraetetechnik GmbH & Co. KG
- Switch current sensors10 Mar 2026US 12,573,550 B2The University of North Carolina at Charlotte
- Enhanced motor identification and control based on current characteristic response8 Oct 2026US 2026/0309781 A1Tesla, Inc.
- Meter adapter and systems27 Aug 2026US 2026/0254237 A1Neworld Energy LLC
- Intermittent Ground Fault Detection For Stators in High-Impedance Grounded Generators13 Aug 2026US 2026/0235678 A1WiSys Technology Foundation, Inc.
- Frequency dependent ground fault interrupt13 Aug 2026US 2026/0235699 A1Pass & Seymour, Inc.
- Hardware fault monitoring circuit25 Jun 2026US 2026/0177638 A1Eaton Intelligent Power Limited
Most cited
By later US patents
- Power line communication and power distribution parameter measurement system and method296US 7,795,877 B2Current Technologies, LLC · 2010
- Utility monitor for detecting and storing power line disturbances60US 4,156,280 AInternational Business Machines Corporation · 1979
- Utility meter having primary and secondary communication circuits59US 6,665,620 B1Siemens Transmission & Distribution, LLC · 2003
- Power line disturbance detector circuit46US 4,245,150 AInternational Business Machines Corporation · 1981
- AC current sensor for measuring electric AC current in a conductor and an indicator system comprising such a sensor42US 8,421,475 B2Soren Thiim ApS · 2013