H03H 9/6409
Saw notch filters
Official title: {SAW notch filters}
H03H9/6409 (Saw notch filters) appears on 80 US grants and 81 published applications in this corpus.
Search patents in H03H- Granted patents
- 80
- Published applications
- 81
- Assignees
- 41
- Inventors
- 115
- Latest grant
- 28 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 1 | 1 |
| 2005 | 1 | 1 |
| 2006 | 1 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 3 |
| 2009 | 2 | 0 |
| 2010 | 1 | 3 |
| 2011 | 3 | 8 |
| 2012 | 3 | 5 |
| 2013 | 2 | 1 |
| 2014 | 6 | 3 |
| 2015 | 5 | 2 |
| 2016 | 4 | 4 |
| 2017 | 4 | 4 |
| 2018 | 4 | 8 |
| 2019 | 3 | 5 |
| 2020 | 6 | 11 |
| 2021 | 8 | 4 |
| 2022 | 5 | 5 |
| 2023 | 5 | 5 |
| 2024 | 4 | 2 |
| 2025 | 5 | 0 |
| 2026 | 0 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Programmable acoustic filter circuit28 Oct 2025US 12,456,964 B2Qorvo US, Inc.
- Electroacoustic filter with low phase delay for multiplexed signals7 Oct 2025US 12,438,520 B2RF360 Singapore Pte. Ltd.
- Acoustic wave resonator with multiple resonant frequencies18 Mar 2025US 12,255,616 B2Skyworks Solutions, Inc.
- Bridge-type filters18 Feb 2025US 12,231,112 B2RF360 Singapore Pte. Ltd.
- Hybridized wideband notch-filter topologies and methods14 Jan 2025US 12,199,653 B2Murata Manufacturing Co., Ltd.
- Acoustic wave device and multiplexer20 Aug 2026US 2026/0246451 A1Murata Manufacturing Co., Ltd.
- Enhancing spurious rejection in an acoustic filter circuit21 May 2026US 2026/0142648 A1Qorvo US, Inc.
- Dual resonance helper for radio-frequency filter26 Mar 2026US 2026/0088852 A1
- Multilayer piezoelectric substrate resonator reflector stopband setting29 Jan 2026US 2026/0031792 A1
- Hybridized Wideband Notch-Filter Topologies and Methods25 Apr 2024US 2024/0137058 A1pSemi Corporation
Most cited
By later US patents
- Notch filter62US 4,577,168 AR. F. Monolithics, Inc. · 1986
- Notch filter41US 4,694,266 AR. F. Monolithic, Inc. · 1987
- Notch filter incorporating saw devices and a delay line38US 6,201,457 B1CTS Corporation · 2001
- Band reject filters33US 6,924,715 B2Nortel Networks Limited · 2005
- Impedance element and band-rejection filter using the same26US 4,126,837 ANippon Telegraph & Telephone Public Corporation · 1978