H02H 9/002
Limiting inrush current on switching on of inductive loads subjected to remanence
Official title: {limiting inrush current on switching on of inductive loads subjected to remanence, e.g. transformers}
H02H9/002 (Limiting inrush current on switching on of inductive loads subjected to remanence) appears on 210 US grants and 222 published applications in this corpus.
Search patents in H02H- Granted patents
- 210
- Published applications
- 222
- Assignees
- 162
- Inventors
- 462
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 1 |
| 2002 | 2 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 2 |
| 2005 | 0 | 1 |
| 2006 | 2 | 1 |
| 2007 | 0 | 3 |
| 2008 | 0 | 2 |
| 2009 | 4 | 5 |
| 2010 | 1 | 3 |
| 2011 | 5 | 9 |
| 2012 | 6 | 10 |
| 2013 | 8 | 11 |
| 2014 | 6 | 18 |
| 2015 | 11 | 16 |
| 2016 | 13 | 7 |
| 2017 | 20 | 16 |
| 2018 | 10 | 14 |
| 2019 | 12 | 16 |
| 2020 | 16 | 17 |
| 2021 | 19 | 12 |
| 2022 | 16 | 13 |
| 2023 | 8 | 9 |
| 2024 | 13 | 14 |
| 2025 | 9 | 13 |
| 2026 | 7 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Power switching system6 Oct 2026US 12,756,192 B2Delta Electronics, Inc.
- Techniques for using an energy storage system as soft starter for large inductive devices25 Aug 2026US 12,719,263 B2Caterpillar Inc.
- Short-circuit detection device7 Jul 2026US 12,676,469 B2STMicroelectronics International N. V.
- Adaptive flux band for improving transfer times in a static transfer switch9 Jun 2026US 12,651,925 B1ABB Schweiz AG
- Solid state circuit breaker and control method therefor21 Apr 2026US 12,609,525 B2Ls Electric Co., Ltd.
- Rectifier with inrush protection bypass passing current in one direction only and method for starting up power supply to a rectifier27 Aug 2026US 2026/0254228 A1
- Inrush current suppression circuit6 Aug 2026US 2026/0229880 A1Anpec Electronics Corporation
- Pre-charge short circuit detection for use in solid state protection systems23 Jul 2026US 2026/0213521 A1Littelfuse, Inc.
- Charging circuit, power supply including the same, and charging method using the same18 Jun 2026US 2026/0171819 A1Hanwha Solutions Corporation
- Adaptive Flux Band for Improving Transfer Times in a Static Transfer Switch11 Jun 2026US 2026/0163401 A1ABB Schweiz AG
Most cited
By later US patents
- Method and circuit for controlling a hybrid contactor61US 4,356,525 AGeneral Electric Company · 1982
- Inrush current limiter49US 4,396,882 A1983
- Current inrush limiting apparatus40US 4,328,459 ATRW Inc. · 1982
- Bridge motor driver with short-circuit protection and motor-current limiting feature39US 5,457,364 AAllegro MicroSystems, LLC · 1995
- Process and device for reducing the inrush current when powering aninductive load33US 5,479,086 AFraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V. · 1995