H03H 7/075
Ladder networks
Official title: Ladder networks, e.g. electric wave filters
H03H7/075 (Ladder networks) appears on 188 US grants and 187 published applications in this corpus.
Search patents in H03H- Granted patents
- 188
- Published applications
- 187
- Assignees
- 99
- Inventors
- 330
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 2 | 4 |
| 2003 | 6 | 5 |
| 2004 | 2 | 5 |
| 2005 | 2 | 2 |
| 2006 | 4 | 2 |
| 2007 | 1 | 3 |
| 2008 | 1 | 2 |
| 2009 | 5 | 4 |
| 2010 | 1 | 5 |
| 2011 | 5 | 6 |
| 2012 | 3 | 13 |
| 2013 | 4 | 3 |
| 2014 | 15 | 7 |
| 2015 | 6 | 13 |
| 2016 | 8 | 16 |
| 2017 | 16 | 12 |
| 2018 | 12 | 14 |
| 2019 | 19 | 15 |
| 2020 | 8 | 9 |
| 2021 | 8 | 13 |
| 2022 | 10 | 8 |
| 2023 | 7 | 10 |
| 2024 | 8 | 8 |
| 2025 | 11 | 5 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Electronic component12 May 2026US 12,628,271 B2TDK Corporation
- Semiconductor integrated circuit and radio-frequency module7 Apr 2026US 12,597,893 B2Murata Manufacturing Co., Ltd.
- Filter apparatus and radio-frequency front end circuit incorporating the same17 Mar 2026US 12,580,546 B2Murata Manufacturing Co., Ltd.
- Filter apparatus10 Feb 2026US 12,549,148 B2Murata Manufacturing Co., Ltd.
- Filter apparatus6 Jan 2026US 12,519,448 B2Murata Manufacturing Co., Ltd.
- Filter and multiplexer1 Oct 2026US 2026/0303051 A1Aniui Anuki Technologies Co., Ltd.
- Filter and multiplexer20 Aug 2026US 2026/0246441 A1Anhui Yunta Electronic Technologies Co., Ltd.
- Mixed radio frequency filter with capacitors and resonators14 May 2026US 2026/0135542 A1RichWave Technology Corp.
- Out-of-band rejection for acoustic-wave filters20 Nov 2025US 2025/0357952 A1Skyworks Solutions, Inc.
- Post-resonance circuits, devices, systems, and methods16 Oct 2025US 2025/0323615 A1
Most cited
By later US patents
- High frequency printed circuit board via98US 6,538,538 B2FormFactor, Inc. · 2003
- High frequency printed circuit board via74US 6,661,316 B2FormFactor, Inc. · 2003
- Liquid crystalline polymer and multilayer polymer-based passive signal processing components for RF/wireless multi-band applications54US 7,795,995 B2Georgia Tech Research Corporation · 2010
- Optical receiver circuit including a filter network to minimize noise43US 4,959,535 ABritish Telecommunication, plc · 1990
- High temperature superconductor lumped element band-reject filters42US 5,616,539 ASuperconductor Technologies, Inc. · 1997