H02J 3/18
Arrangements for adjusting, eliminating or compensating reactive power in networks
H02J3/18 (Arrangements for adjusting, eliminating or compensating reactive power in networks) appears on 1,902 US grants and 1,778 published applications in this corpus.
Search patents in H02J- Granted patents
- 1,902
- Published applications
- 1,778
- Assignees
- 803
- Inventors
- 3,851
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 18 | 0 |
| 1977 | 15 | 0 |
| 1978 | 5 | 0 |
| 1979 | 5 | 0 |
| 1980 | 9 | 0 |
| 1981 | 12 | 0 |
| 1982 | 11 | 0 |
| 1983 | 16 | 0 |
| 1984 | 21 | 0 |
| 1985 | 14 | 0 |
| 1986 | 14 | 0 |
| 1987 | 14 | 0 |
| 1988 | 7 | 0 |
| 1989 | 10 | 0 |
| 1990 | 9 | 0 |
| 1991 | 7 | 0 |
| 1992 | 12 | 0 |
| 1993 | 13 | 0 |
| 1994 | 24 | 0 |
| 1995 | 22 | 0 |
| 1996 | 19 | 0 |
| 1997 | 28 | 0 |
| 1998 | 19 | 0 |
| 1999 | 30 | 0 |
| 2000 | 25 | 0 |
| 2001 | 16 | 4 |
| 2002 | 19 | 16 |
| 2003 | 20 | 28 |
| 2004 | 18 | 15 |
| 2005 | 19 | 21 |
| 2006 | 19 | 17 |
| 2007 | 14 | 22 |
| 2008 | 13 | 40 |
| 2009 | 20 | 37 |
| 2010 | 42 | 64 |
| 2011 | 33 | 64 |
| 2012 | 40 | 80 |
| 2013 | 49 | 101 |
| 2014 | 76 | 85 |
| 2015 | 56 | 88 |
| 2016 | 83 | 101 |
| 2017 | 83 | 117 |
| 2018 | 123 | 129 |
| 2019 | 145 | 108 |
| 2020 | 122 | 116 |
| 2021 | 120 | 124 |
| 2022 | 109 | 96 |
| 2023 | 70 | 85 |
| 2024 | 74 | 80 |
| 2025 | 85 | 81 |
| 2026 | 55 | 59 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Power switching system6 Oct 2026US 12,756,192 B2Delta Electronics, Inc.
- Method and device for changing a transformation ratio, an impedance, or a voltage used for excitation6 Oct 2026US 12,756,193 B2Reinhausen GmbH
- Microgrid network characterization6 Oct 2026US 12,756,195 B2Caterpillar Inc.
- System and method for optimal power grid reactive resource switching6 Oct 2026US 12,756,196 B2AspenTech Corporation
- Distributed-power-source control system29 Sep 2026US 12,749,899 B2Mitsubishi Electric Corporation
- Power supply tie transformer, and regulation and control method therefor8 Oct 2026US 2026/0312409 A1
- Flicker suppression device and flicker suppression control method1 Oct 2026US 2026/0302778 A1Mitsubishi Electric Corporation
- Transformer system1 Oct 2026US 2026/0302781 A1
- Portable synchronous condenser apparatus, system, method of operation, and method of manufacture1 Oct 2026US 2026/0302782 A1
- Grid Forming Over Distribution Grid with Renewable Sources and Loads1 Oct 2026US 2026/0302792 A1Smart Wires Inc.
Most cited
By later US patents
- Method for distributed power harvesting using DC power sources338US 8,013,472 B2Solaredge, Ltd. · 2011
- Non-contact power distribution system323US 5,898,579 AAuckland Uniservices Limited · 1999
- Apparatus and method for dynamic voltage restoration of utility distribution networks274US 5,329,222 AWestinghouse Electric Corp. · 1994
- Variable speed wind turbine with reduced power fluctuation and a static VAR mode of operation266US 5,225,712 AU.S. Windpower, Inc. · 1993
- Power conversion apparatus, power conversion system, and islanding operation detection method259US 6,801,442 B2Canon Kabushiki Kaisha · 2004