H01P 1/20345
Multilayer filters
Official title: {Multilayer filters}
H01P1/20345 (Multilayer filters) appears on 301 US grants and 288 published applications in this corpus.
Search patents in H01P- Granted patents
- 301
- Published applications
- 288
- Assignees
- 126
- Inventors
- 568
- Latest grant
- 30 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 6 | 0 |
| 1995 | 4 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 9 | 3 |
| 2002 | 9 | 8 |
| 2003 | 6 | 13 |
| 2004 | 8 | 8 |
| 2005 | 9 | 9 |
| 2006 | 8 | 9 |
| 2007 | 3 | 13 |
| 2008 | 10 | 6 |
| 2009 | 6 | 7 |
| 2010 | 7 | 15 |
| 2011 | 11 | 26 |
| 2012 | 14 | 24 |
| 2013 | 11 | 15 |
| 2014 | 21 | 11 |
| 2015 | 26 | 12 |
| 2016 | 14 | 13 |
| 2017 | 11 | 11 |
| 2018 | 13 | 4 |
| 2019 | 7 | 8 |
| 2020 | 10 | 8 |
| 2021 | 4 | 8 |
| 2022 | 9 | 11 |
| 2023 | 6 | 18 |
| 2024 | 6 | 14 |
| 2025 | 28 | 9 |
| 2026 | 6 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Tunable hybrid EBG-based electronic filter with discrete reactive elements30 Jun 2026US 12,671,158 B1Amazon Technologies, Inc.
- Filter device2 Jun 2026US 12,647,088 B2Murata Manufacturing Co., Ltd.
- Filter device and radio-frequency front-end circuit equipped with the same12 May 2026US 12,627,019 B2Murata Manufacturing Co., Ltd.
- Multilayered filter device24 Mar 2026US 12,586,881 B2TDK Corporation
- Filter17 Mar 2026US 12,580,289 B2TDK Corporation
- Circuits and methods for high frequency filters27 Aug 2026US 2026/0254083 A1Murata Manufacturing Co., Ltd.
- Filter Device25 Jun 2026US 2026/0180553 A1Kmw Inc.
- Electromagnetic bandgap filter implemented in pcb with through-hole vias16 Apr 2026US 2026/0106361 A1Amazon Technologies, Inc.
- Phase shifter and electronic device22 Jan 2026US 2026/0024903 A1Boe Technology Group Co., Ltd.
- Antenna device, electronic component and associated methods15 Jan 2026US 2026/0018791 A1Murata Manufacturing Co., Ltd.
Most cited
By later US patents
- High-frequency transmission line connection structure, circuit board, high-frequency module, and radar device229US 8,159,316 B2KYOCERA Corporation · 2012
- Disk drive comprising an interconnect with transmission lines forming an approximated lattice network134US 8,467,151 B1Western Digital Technologies, Inc. · 2013
- Dielectric filter having inter-resonator coupling including both magnetic and electric coupling95US 5,396,201 AMatsushita Electric Industrial Co., Ltd. · 1995
- Time division multiple access FDD wireless unit and time division multiple access FDD/TDD dual mode wireless unit77US 5,926,466 AMatsushita Electric Industrial Co., Ltd. · 1999
- Dielectric filter with multiple resonators74US 5,719,539 AMatsushita Electric Industrial Co., Ltd. · 1998