H01F 30/10
Single-phase transformers
Official title: Single-phase transformers (H01F30/16 takes precedence)
H01F30/10 (Single-phase transformers) appears on 196 US grants and 166 published applications in this corpus.
Search patents in H01F- Granted patents
- 196
- Published applications
- 166
- Assignees
- 150
- Inventors
- 481
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 3 | 0 |
| 1988 | 4 | 0 |
| 1989 | 8 | 0 |
| 1990 | 10 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 7 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 6 | 0 |
| 1998 | 3 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 3 |
| 2002 | 5 | 4 |
| 2003 | 4 | 3 |
| 2004 | 2 | 5 |
| 2005 | 4 | 2 |
| 2006 | 2 | 4 |
| 2007 | 4 | 4 |
| 2008 | 2 | 2 |
| 2009 | 1 | 2 |
| 2010 | 3 | 1 |
| 2011 | 0 | 3 |
| 2012 | 1 | 1 |
| 2013 | 3 | 1 |
| 2014 | 0 | 1 |
| 2015 | 0 | 6 |
| 2016 | 4 | 2 |
| 2017 | 4 | 9 |
| 2018 | 4 | 17 |
| 2019 | 14 | 13 |
| 2020 | 9 | 17 |
| 2021 | 10 | 10 |
| 2022 | 10 | 12 |
| 2023 | 11 | 8 |
| 2024 | 9 | 22 |
| 2025 | 11 | 8 |
| 2026 | 2 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Transformer, power conversion device, product group of transformer, and manufacturing method for transformer18 Aug 2026US 12,712,115 B2Mitsubishi Electric Corporation
- Magnetic integrated device10 Mar 2026US 12,573,543 B2Lite-On Electronics (Guangzhou) Limited
- Coil component16 Dec 2025US 12,500,025 B2Sumida Corporation
- Heater for aerosol-generating device with connectors11 Nov 2025US 12,465,087 B2Altria Client Services LLC
- Transformer4 Nov 2025US 12,462,967 B2Autonetworks Technologies, Ltd.
- Integrated magnetic assembly for a multiphase dc-to-dc power converter13 Aug 2026US 2026/0237554 A1Delta Electronics (Thailand) Public Co., Ltd.
- Three-dimensional vertical inductors with magnetic core11 Jun 2026US 2026/0162861 A1Microchip Technology Incorporated
- Three-dimensional inductors with vertical winding11 Jun 2026US 2026/0162885 A1Microchip Technology Incorporated
- Three-dimensional differential inductor with vertical winding11 Jun 2026US 2026/0162886 A1Microchip Technology Incorporated
- Heater for aerosol-generating device with connect5 Feb 2026US 2026/0033548 A1Altria Client Services LLC
Most cited
By later US patents
- Switching electrical power supply utilizing miniature inductors integrally in a PCB210US 4,622,627 ATheta-J Corporation · 1986
- Transformer having fractional turn windings135US 6,348,848 B12002
- Integrated planar magnetics and connector126US 5,631,822 AInterpoint Corporation · 1997
- Three coil bridge transformer109US 5,225,971 AInternational Business Machines Corporation · 1993
- High voltage switch with isolated power80US 10,607,814 B2Eagle Harbor Technologies, Inc. · 2020