H02J 3/1835
With stepless control
Official title: with stepless control
H02J3/1835 (With stepless control) appears on 607 US grants and 529 published applications in this corpus.
Search patents in H02J- Granted patents
- 607
- Published applications
- 529
- Assignees
- 321
- Inventors
- 1,362
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 14 | 0 |
| 1977 | 8 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 2 | 0 |
| 1983 | 4 | 0 |
| 1984 | 5 | 0 |
| 1985 | 7 | 0 |
| 1986 | 5 | 0 |
| 1987 | 9 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 3 | 0 |
| 1992 | 8 | 0 |
| 1993 | 6 | 0 |
| 1994 | 8 | 0 |
| 1995 | 6 | 0 |
| 1996 | 10 | 0 |
| 1997 | 9 | 0 |
| 1998 | 6 | 0 |
| 1999 | 10 | 0 |
| 2000 | 9 | 0 |
| 2001 | 5 | 3 |
| 2002 | 4 | 6 |
| 2003 | 8 | 8 |
| 2004 | 4 | 7 |
| 2005 | 11 | 12 |
| 2006 | 8 | 7 |
| 2007 | 6 | 10 |
| 2008 | 7 | 13 |
| 2009 | 5 | 14 |
| 2010 | 16 | 13 |
| 2011 | 11 | 18 |
| 2012 | 15 | 29 |
| 2013 | 18 | 31 |
| 2014 | 26 | 30 |
| 2015 | 15 | 20 |
| 2016 | 25 | 26 |
| 2017 | 19 | 31 |
| 2018 | 35 | 37 |
| 2019 | 36 | 30 |
| 2020 | 39 | 34 |
| 2021 | 36 | 31 |
| 2022 | 31 | 24 |
| 2023 | 22 | 25 |
| 2024 | 10 | 22 |
| 2025 | 26 | 26 |
| 2026 | 15 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Utilization of distributed generator inverters as statcom22 Sep 2026US 12,744,380 B2
- Use of distributed generator (DG) inverters as STATCOMs for decreasing line losses18 Aug 2026US 12,710,780 B2
- Converter, method of installing a power system, and use of a converter4 Aug 2026US 12,700,734 B2Hitachi Energy Ltd
- Power supply system for arc furnace and associated arc furnace and method28 Jul 2026US 12,695,305 B2GE Energy Power Conversion Technology Limited
- High anti-interference microsystem based on system in package (SIP) for power grid14 Jul 2026US 12,683,400 B2Electric Power Research Institute of State Grid Zhejiang Electric Power Company
- 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
- Grid Forming Over Distribution Grid with Renewable Sources and Loads1 Oct 2026US 2026/0302792 A1Smart Wires Inc.
- Virtual synchronous control method and apparatus, device, and storage medium for energy storage system24 Sep 2026US 2026/0291240 A1Contemporary Amperex Future Energy Institute (Shanghai) Limited
- Method and system for dynamic adjustment of power synchronisation17 Sep 2026US 2026/0280294 A1GE Vernova Infrastructure Technology LLC
Most cited
By later US patents
- 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
- Variable speed wind turbine245US 5,083,039 AU.S. Windpower, Inc. · 1992
- System for reducing harmonics by harmonic current injection194US 5,499,178 ARegents of the University of Minnesota · 1996