H03H 9/0023
Networks for transforming balanced signals into unbalanced signals and vice versa
Official title: {Networks for transforming balanced signals into unbalanced signals and vice versa, e.g. baluns, or networks having balanced input and output}
H03H9/0023 (Networks for transforming balanced signals into unbalanced signals and vice versa) appears on 523 US grants and 474 published applications in this corpus.
Search patents in H03H- Granted patents
- 523
- Published applications
- 474
- Assignees
- 107
- Inventors
- 538
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 6 | 0 |
| 1997 | 5 | 0 |
| 1998 | 6 | 0 |
| 1999 | 13 | 0 |
| 2000 | 9 | 0 |
| 2001 | 8 | 9 |
| 2002 | 19 | 30 |
| 2003 | 13 | 30 |
| 2004 | 38 | 41 |
| 2005 | 28 | 26 |
| 2006 | 27 | 17 |
| 2007 | 23 | 30 |
| 2008 | 26 | 32 |
| 2009 | 27 | 32 |
| 2010 | 28 | 32 |
| 2011 | 30 | 17 |
| 2012 | 24 | 36 |
| 2013 | 23 | 21 |
| 2014 | 13 | 15 |
| 2015 | 34 | 17 |
| 2016 | 24 | 20 |
| 2017 | 16 | 8 |
| 2018 | 14 | 10 |
| 2019 | 10 | 10 |
| 2020 | 10 | 4 |
| 2021 | 10 | 5 |
| 2022 | 4 | 7 |
| 2023 | 8 | 13 |
| 2024 | 3 | 6 |
| 2025 | 10 | 2 |
| 2026 | 5 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Radio frequency signal splitting with differential filter and low noise amplifiers24 Mar 2026US 12,587,224 B2Skyworks Solutions, Inc.
- Bulk filter10 Mar 2026US 12,574,001 B2Guangdong Zhineng Technologies, Co. Ltd.
- Composite filter device10 Mar 2026US 12,574,013 B2Murata Manufacturing Co., Ltd.
- Wafer level package having enhanced thermal dissipation24 Feb 2026US 12,562,711 B2Skyworks Solutions, Inc.
- Biological information monitoring apparatus and MRI apparatus10 Feb 2026US 12,543,965 B2Canon Medical Systems Corporation
- Reconfigurable hybrid lattice filter system8 Oct 2026US 2026/0312562 A1Qorvo US, Inc.
- Radio frequency signal splitting with differential filter and low noise amplifiers2 Jul 2026US 2026/0189254 A1Skyworks Solutions, Inc.
- 5.5 ghz wi-fi 5g coexistence acoustic wave resonator rf filter circuit26 Feb 2026US 2026/0058640 A1Akoustis Technologies Corp.
- Hybrid lattice filter with acoustic balun15 Jan 2026US 2026/0019092 A1Qorvo US, Inc.
- Acoustic transformer in transmission chain28 Aug 2025US 2025/0274106 A1
Most cited
By later US patents
- Layer acoustic wave device and method of making the same290US 7,619,347 B1RF Micro Devices, Inc. · 2009
- Filters and duplexers utilizing thin film stacked crystal filter structures and thin film bulk acoustic wave resonators203US 5,910,756 ANokia Mobile Phones Ltd. · 1999
- Bulk acoustic wave resonator with two piezoelectric layers as balun in filters and duplexers180US 6,670,866 B2Nokia Corporation · 2003
- Method of making a monolithic thin film resonator lattice filter163US 5,692,279 AMotorola, Inc. · 1997
- Coupled resonator bulk acoustic wave filter163US 6,720,844 B1TFR Technologies, Inc. · 2004