H01F 19/08
Transformers having magnetic bias
Official title: Transformers having magnetic bias, e.g. for handling pulses
H01F19/08 (Transformers having magnetic bias) appears on 153 US grants and 158 published applications in this corpus.
Search patents in H01F- Granted patents
- 153
- Published applications
- 158
- Assignees
- 138
- Inventors
- 340
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 3 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 3 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 3 | 2 |
| 2003 | 1 | 4 |
| 2004 | 5 | 18 |
| 2005 | 6 | 5 |
| 2006 | 12 | 9 |
| 2007 | 2 | 3 |
| 2008 | 3 | 14 |
| 2009 | 5 | 5 |
| 2010 | 12 | 16 |
| 2011 | 11 | 5 |
| 2012 | 4 | 2 |
| 2013 | 8 | 2 |
| 2014 | 2 | 3 |
| 2015 | 3 | 5 |
| 2016 | 5 | 3 |
| 2017 | 2 | 2 |
| 2018 | 4 | 2 |
| 2019 | 2 | 5 |
| 2020 | 1 | 9 |
| 2021 | 4 | 10 |
| 2022 | 9 | 8 |
| 2023 | 7 | 10 |
| 2024 | 8 | 9 |
| 2025 | 8 | 4 |
| 2026 | 2 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Insulation module and gate driver17 Mar 2026US 12,581,992 B2Rohm Co., Ltd.
- Isolator27 Jan 2026US 12,538,806 B2Kabushiki Kaisha Toshiba
- Monolithic or multi-die integrated circuit transformer30 Dec 2025US 12,512,252 B2Analog Devices, Inc.
- Isolator18 Nov 2025US 12,476,208 B2Kabushiki Kaisha Toshiba
- Low noise amplifier incorporating Sutardja transformer4 Nov 2025US 12,463,604 B2
- Insulation module and gate driver2 Jul 2026US 2026/0191086 A1Rohm Co., Ltd.
- Isolator16 Apr 2026US 2026/0107781 A1Kabushiki Kaisha Toshiba
- Low noise amplifier incorporating sutardja transformer26 Feb 2026US 2026/0058617 A1
- Planar transformer with improved reliability9 Oct 2025US 2025/0316418 A1STMicroelectronics International N. V.
- Methods, apparatus, and articles of manufacture to communicate multiple signals over an isolation channel5 Jun 2025US 2025/0184187 A1
Most cited
By later US patents
- Transmitter head and system for contactless energy transmission205US 7,492,247 B2Sew-Eurodrive GmbH & Co. KG · 2009
- Single unit integrated transformer assembly186US 6,483,203 B13Com Corporation · 2002
- Isolation transformer for medical equipment185US 5,615,091 ABiochem International Inc. · 1997
- Signal isolators using micro-transformers151US 7,075,329 B2Analog Devices, Inc. · 2006
- Repetitive power pulse generator with fast rising pulse135US 6,831,377 B2University of Southern California · 2004