H02M 5/257
Using semiconductor devices only
Official title: using semiconductor devices only
H02M5/257 (Using semiconductor devices only) appears on 428 US grants and 233 published applications in this corpus.
Search patents in H02M- Granted patents
- 428
- Published applications
- 233
- Assignees
- 265
- Inventors
- 714
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 8 | 0 |
| 1978 | 4 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 9 | 0 |
| 1982 | 17 | 0 |
| 1983 | 6 | 0 |
| 1984 | 4 | 0 |
| 1985 | 11 | 0 |
| 1986 | 7 | 0 |
| 1987 | 18 | 0 |
| 1988 | 5 | 0 |
| 1989 | 7 | 0 |
| 1990 | 7 | 0 |
| 1991 | 7 | 0 |
| 1992 | 3 | 0 |
| 1993 | 10 | 0 |
| 1994 | 10 | 0 |
| 1995 | 6 | 0 |
| 1996 | 6 | 0 |
| 1997 | 10 | 0 |
| 1998 | 16 | 0 |
| 1999 | 10 | 0 |
| 2000 | 6 | 0 |
| 2001 | 13 | 2 |
| 2002 | 4 | 4 |
| 2003 | 4 | 5 |
| 2004 | 9 | 13 |
| 2005 | 3 | 10 |
| 2006 | 8 | 4 |
| 2007 | 10 | 10 |
| 2008 | 7 | 7 |
| 2009 | 4 | 8 |
| 2010 | 10 | 9 |
| 2011 | 5 | 13 |
| 2012 | 5 | 11 |
| 2013 | 9 | 17 |
| 2014 | 9 | 17 |
| 2015 | 15 | 16 |
| 2016 | 18 | 11 |
| 2017 | 17 | 13 |
| 2018 | 12 | 12 |
| 2019 | 15 | 9 |
| 2020 | 13 | 11 |
| 2021 | 9 | 12 |
| 2022 | 6 | 4 |
| 2023 | 8 | 4 |
| 2024 | 8 | 5 |
| 2025 | 7 | 5 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Load control device for high-efficiency loads29 Sep 2026US 12,750,930 B2Lutron Technology Company LLC
- Controllable-load circuit for use with a load control device9 Jun 2026US 12,652,735 B2Lutron Technology Company LLC
- Control circuit and circuit of multi-speed ceiling fan with light30 Dec 2025US 12,512,680 B1Shenzhen Funpower General Technology Co., Ltd.
- Two-way AC power conversion device14 Oct 2025US 12,445,044 B2Chroma Ate Inc.
- Multi-voltage driving control method, apparatus, and device, and computer-readable storage medium22 Jul 2025US 12,368,377 B2Shenzhen Inteltron Intelligent Science & Technology Co., Ltd.
- Method of controlling bidirectional thyristor in image forming apparatus30 Apr 2026US 2026/0121550 A1Canon Kabushiki Kaisha
- Load Control Device for High-Efficiency Loads9 Oct 2025US 2025/0318028 A1Lutron Technology Company LLC
- Control systems2 Oct 2025US 2025/0309777 A1Viridis Solutions Ltd.
- Multi-voltage driving control method, apparatus, and device, and computer-readable storage medium20 Mar 2025US 2025/0096677 A1Shenzhen Inteltron Intelligent Science & Technology Co., Ltd.
- Two-way ac power conversion device13 Feb 2025US 2025/0055383 A1Chroma Ate Inc.
Most cited
By later US patents
- Programmed control module for inductive coupling to a wall switch244US 5,264,761 ABeacon Light Products, Inc. · 1993
- Load control system205US 4,833,339 ALutron Electronics Co., Inc. · 1989
- AC power supply apparatus with economy mode and methods of operation thereof135US 6,295,215 B1Powerware Corporation · 2001
- Energy saving power control system and method129US 5,754,036 ALTI International, Inc. · 1998
- Power stealing for a thermostat using a TRIAC with FET control128US 7,755,220 B2Carrier Corporation · 2010