H01F 38/48
Common mode inductor for reducing or eliminating common mode noise on parallel
Official title: {Common mode inductor for reducing or eliminating common mode noise on parallel lines}
H01F38/48 (Common mode inductor for reducing or eliminating common mode noise on parallel) appears on 457 US grants and 595 published applications in this corpus.
Search patents in H01F- Granted patents
- 457
- Published applications
- 595
- Assignees
- 160
- Inventors
- 939
- Latest grant
- 4 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 0 |
| 2002 | 4 | 6 |
| 2003 | 3 | 7 |
| 2004 | 3 | 13 |
| 2005 | 7 | 16 |
| 2006 | 18 | 15 |
| 2007 | 11 | 10 |
| 2008 | 12 | 16 |
| 2009 | 6 | 17 |
| 2010 | 8 | 7 |
| 2011 | 15 | 8 |
| 2012 | 6 | 5 |
| 2013 | 5 | 16 |
| 2014 | 8 | 35 |
| 2015 | 13 | 17 |
| 2016 | 21 | 35 |
| 2017 | 19 | 33 |
| 2018 | 31 | 47 |
| 2019 | 34 | 44 |
| 2020 | 25 | 49 |
| 2021 | 30 | 47 |
| 2022 | 36 | 32 |
| 2023 | 39 | 31 |
| 2024 | 43 | 36 |
| 2025 | 32 | 33 |
| 2026 | 12 | 20 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Common mode filter4 Aug 2026US 12,700,532 B2TDK Corporation
- Coil component16 Jun 2026US 12,658,350 B2Murata Manufacturing Co., Ltd.
- Winding-type coil component12 May 2026US 12,626,853 B2Murata Manufacturing Co., Ltd.
- Power modules with elevated inductors and capacitors arranged under the inductors14 Apr 2026US 12,603,210 B2Google Inc.
- Common mode filter14 Apr 2026US 12,603,214 B2Amogreentech Co., Ltd.
- Choke for a multi-conductor system8 Oct 2026US 2026/0311924 A1TDK Electronics Co., Ltd.
- Quick assembly common mode filter10 Sep 2026US 2026/0269121 A1Tai-Tech Advanced Electronics Co., Ltd.
- Laminated structure and method for manufacturing laminated structure13 Aug 2026US 2026/0233489 A1Tomoegawa Co., Ltd.
- Common mode filter circuit with cooler30 Jul 2026US 2026/0221329 A1IHI Corporation
- Power modules with elevated inductors and capacitors arranged under the inductors23 Jul 2026US 2026/0213058 A1Google Inc.
Most cited
By later US patents
- Signal isolators using micro-transformers151US 7,075,329 B2Analog Devices, Inc. · 2006
- Laminated chip common mode choke coil60US 5,250,923 AMurata Manufacturing Co., Ltd. · 1993
- Common mode filter connector with isolation53US 6,102,741 AAmphenol Corporation · 2000
- Coil device46US 6,710,694 B2Murata Manufacturing Co., Ltd. · 2004
- Signal isolators using micro-transformers45US 7,692,444 B2Analog Devices, Inc. · 2010