H03H 17/0248
Filters characterised by a particular frequency response or filtering method
Official title: {Filters characterised by a particular frequency response or filtering method}
H03H17/0248 (Filters characterised by a particular frequency response or filtering method) appears on 956 US grants and 709 published applications in this corpus.
Search patents in H03H- Granted patents
- 956
- Published applications
- 709
- Assignees
- 485
- Inventors
- 1,477
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 2 | 0 |
| 1980 | 3 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 4 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 10 | 0 |
| 1989 | 10 | 0 |
| 1990 | 9 | 0 |
| 1991 | 5 | 0 |
| 1992 | 12 | 0 |
| 1993 | 12 | 0 |
| 1994 | 16 | 0 |
| 1995 | 15 | 0 |
| 1996 | 9 | 0 |
| 1997 | 12 | 0 |
| 1998 | 15 | 0 |
| 1999 | 33 | 0 |
| 2000 | 18 | 0 |
| 2001 | 22 | 4 |
| 2002 | 26 | 27 |
| 2003 | 23 | 34 |
| 2004 | 17 | 30 |
| 2005 | 26 | 37 |
| 2006 | 38 | 39 |
| 2007 | 31 | 26 |
| 2008 | 36 | 34 |
| 2009 | 33 | 22 |
| 2010 | 22 | 20 |
| 2011 | 26 | 20 |
| 2012 | 21 | 28 |
| 2013 | 30 | 12 |
| 2014 | 31 | 37 |
| 2015 | 31 | 34 |
| 2016 | 38 | 33 |
| 2017 | 51 | 49 |
| 2018 | 44 | 38 |
| 2019 | 40 | 39 |
| 2020 | 42 | 26 |
| 2021 | 27 | 33 |
| 2022 | 29 | 23 |
| 2023 | 26 | 20 |
| 2024 | 25 | 24 |
| 2025 | 9 | 16 |
| 2026 | 9 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H03H 17/0264Filter sets with mutual related characteristics429
- H03H 17/0261Non linear filters140
- H03H 17/028Polynomial filters75
- H03H 17/0254Matched filters57
- H03H 17/0255Filters based on statistics54
- H03H 17/025Notch filters43
- H03H 17/026Averaging filters42
- H03H 17/0251Comb filters39
All 10 subgroupsShow fewer
Recent patents
- Signal processing apparatus for generating a plurality of output samples using combiner logic based on a hiearchical tree structure29 Sep 2026US 12,750,040 B2Advantest Corporation
- System and method for mapping risks in a warehouse environment25 Aug 2026US 12,718,165 B2Everseen Limited
- Receiver with transcoder and adaptive filter25 Aug 2026US 12,719,452 B1Marvell Asia Pte Ltd
- Method and apparatus for finite impulse response filter under constrained sampling rate2 Jun 2026US 12,647,105 B2Jabil Inc.
- Reducing comb filtering for hearing devices19 May 2026US 12,634,641 B2Starkey Laboratories, Inc.
- Reducing comb filtering for hearing devices10 Sep 2026US 2026/0270628 A1Starkey Laboratories, Inc.
- Detecting and capturing event data in a time series sensor signal30 Jul 2026US 2026/0219661 A1Eaton Intelligent Power Limited
- Imon reconstruction via kalman filter in digital quad controller14 May 2026US 2026/0135544 A1MaxLinear, Inc.
- Kalman filter based phase-locked loop with re-encoding based phase detector16 Apr 2026US 2026/0106782 A1Silicon Laboratories Inc.
- Device for reducing noise during the reproduction of an audio signal using a headphone or hearing aid, and corresponding method9 Oct 2025US 2025/0316256 A1Elevear GmbH
Most cited
By later US patents
- Filterbank structure and method for filtering and separating an information signal into different bands, particularly for audio signal in hearing aids227US 6,236,731 B1dspfactory Ltd. · 2001
- Systems and methods for adaptive filtering artifacts from composite signals171US 5,630,425 AEP Technologies, Inc. · 1997
- Systems and methods for filtering artifacts from composite signals167US 5,601,088 AEP Technologies, Inc. · 1997
- System for digital multiband filtering158US 4,691,292 ARCA Corporation · 1987
- Systems and methods for filtering signals derived from biological events141US 5,605,157 AEP Technologies, Inc. · 1997