H03H 9/547
Notch filters
Official title: {Notch filters, e.g. notch BAW or thin film resonator filters}
H03H9/547 (Notch filters) appears on 134 US grants and 161 published applications in this corpus.
Search patents in H03H- Granted patents
- 134
- Published applications
- 161
- Assignees
- 40
- Inventors
- 186
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2003 | 0 | 1 |
| 2004 | 1 | 1 |
| 2005 | 1 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 2 | 3 |
| 2011 | 2 | 6 |
| 2012 | 3 | 3 |
| 2013 | 1 | 5 |
| 2014 | 4 | 3 |
| 2015 | 4 | 5 |
| 2016 | 6 | 3 |
| 2017 | 5 | 0 |
| 2018 | 4 | 17 |
| 2019 | 5 | 18 |
| 2020 | 19 | 17 |
| 2021 | 17 | 22 |
| 2022 | 15 | 15 |
| 2023 | 11 | 20 |
| 2024 | 11 | 6 |
| 2025 | 17 | 8 |
| 2026 | 5 | 5 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Piezoelectric acoustic resonator with dielectric protective layer manufactured with piezoelectric thin film transfer process15 Sep 2026US 12,738,916 B2Akoustis Technologies Corp.
- Steep skirt combination microelectromechanical system cavity filter and bulk acoustic wave filter26 May 2026US 12,640,705 B2Skyworks Global Pte. Ltd.
- Piezoelectric acoustic resonator with improved TCF manufactured with piezoelectric thin film transfer process10 Mar 2026US 12,573,995 B2Akoustis Technologies Corp.
- Transversal lamb wave filter with improved out of band rejection24 Feb 2026US 12,562,714 B2Skyworks Solutions, Inc.
- Tuning multiplexer filters17 Feb 2026US 12,556,162 B2Skyworks Solutions, Inc.
- Multiplexer filter with reduced out of band impedance24 Sep 2026US 2026/0291465 A1Skyworks Solutions, Inc.
- Piezoelectric acoustic resonator with improved tcf manufactured with piezoelectric thin film transfer process25 Jun 2026US 2026/0180537 A1Akoustis Technologies Corp.
- Enhancing spurious rejection in an acoustic filter circuit21 May 2026US 2026/0142648 A1Qorvo US, Inc.
- Bulk acoustic wave filter5 Mar 2026US 2026/0066873 A1STMicroelectronics International N. V.
- Systems, structures, acoustic wave resonators, layers, and devices29 Jan 2026US 2026/0031790 A1Qxonix Inc.
Most cited
By later US patents
- Transversely-excited film bulk acoustic resonators with molybdenum conductors241US 10,826,462 B2Resonant Inc. · 2020
- Transversely-excited film bulk acoustic resonators with molybdenum conductors62US 11,114,996 B2Resonant Inc. · 2021
- Band reject filters33US 6,924,715 B2Nortel Networks Limited · 2005
- Acoustic wave device and fabrication method of the same27US 9,484,883 B2Taiyo Yuden Co., Ltd. · 2016
- Band elimination filter, filter device, antenna duplexer and communication apparatus24US 7,084,718 B2Matsushita Electric Industrial Co., Ltd. · 2006