H02H 3/382
Involving phase comparison between current and voltage or between values derived from
Official title: {involving phase comparison between current and voltage or between values derived from current and voltage}
H02H3/382 (Involving phase comparison between current and voltage or between values derived from) appears on 74 US grants and 33 published applications in this corpus.
Search patents in H02H- Granted patents
- 74
- Published applications
- 33
- Assignees
- 58
- Inventors
- 151
- Latest grant
- 31 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 7 | 0 |
| 1979 | 1 | 0 |
| 1980 | 6 | 0 |
| 1981 | 4 | 0 |
| 1982 | 4 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 2 | 1 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 2 | 3 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 2 |
| 2011 | 3 | 0 |
| 2012 | 0 | 2 |
| 2013 | 1 | 0 |
| 2014 | 1 | 1 |
| 2015 | 1 | 3 |
| 2016 | 1 | 0 |
| 2017 | 1 | 4 |
| 2018 | 3 | 0 |
| 2019 | 0 | 1 |
| 2020 | 5 | 2 |
| 2021 | 0 | 3 |
| 2022 | 4 | 0 |
| 2023 | 0 | 2 |
| 2024 | 1 | 3 |
| 2025 | 2 | 1 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Network protector for secondary distribution network that includes distributed energy resources31 Mar 2026US 12,592,556 B2Eaton Intelligent Power Limited
- System for locating power faults based on a direction of current flow17 Jun 2025US 12,332,292 B2Cummins Power Generation Inc.
- Systems and methods for identifying grid fault type and faulted phase29 Apr 2025US 12,287,362 B2GE Infrastructure Technology LLC
- Fault detection in a power transmission system29 Oct 2024US 12,130,321 B2Hitachi Energy Ltd
- Systems and methods to improve distance protection in transmission lines25 Oct 2022US 11,480,601 B2General Electric Technology GmbH
- New energy power station grounding protection system, method, electronic device, and storage medium6 Aug 2026US 2026/0229871 A1Shanxi Yingrun New Energy Co., Ltd
- Complex fault protection method and system for single return line of arc suppression coil ground system23 Apr 2026US 2026/0112881 A1Guangzhou Power Suppy Bureau of Guangdong Power Grid Co., Ltd.
- Method of determining fault of power system16 Jan 2025US 2025/0020735 A1ABB Schweiz AG
- Method and system for protecting high-voltage direct-current line, device and storage medium26 Dec 2024US 2024/0429703 A1State Grid Sichuan Electric Power Research Institute
- Power system for identifying power faults23 May 2024US 2024/0168074 A1Cummins Power Generation Inc.
Most cited
By later US patents
- Pump control responsive to voltage-current phase angle138US 5,362,206 AAutomation Associates, Inc. · 1994
- Pump and electric motor protector94US 4,841,404 ASpring Valley Associates, Inc. · 1989
- Water pump protector unit86US 4,885,655 ASpring Valley Associates, Inc. · 1989
- Pump controller79US 6,534,947 B2Sta-Rite Industries, Inc. · 2003
- Electronic relay for calculating the power of a multiphase electric load based on a rectified wave signal and a phase current60US 5,777,833 ASchneider Electric SA · 1998