H03H 17/0213
Frequency domain filters using fourier transforms
Official title: {Frequency domain filters using Fourier transforms}
H03H17/0213 (Frequency domain filters using fourier transforms) appears on 110 US grants and 110 published applications in this corpus.
Search patents in H03H- Granted patents
- 110
- Published applications
- 110
- Assignees
- 86
- Inventors
- 207
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 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 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 2 |
| 2003 | 1 | 1 |
| 2004 | 0 | 2 |
| 2005 | 4 | 5 |
| 2006 | 2 | 3 |
| 2007 | 2 | 2 |
| 2008 | 3 | 3 |
| 2009 | 1 | 0 |
| 2010 | 1 | 6 |
| 2011 | 1 | 1 |
| 2012 | 4 | 3 |
| 2013 | 8 | 3 |
| 2014 | 2 | 7 |
| 2015 | 6 | 7 |
| 2016 | 6 | 7 |
| 2017 | 6 | 4 |
| 2018 | 5 | 12 |
| 2019 | 9 | 7 |
| 2020 | 11 | 6 |
| 2021 | 2 | 10 |
| 2022 | 4 | 9 |
| 2023 | 10 | 3 |
| 2024 | 3 | 4 |
| 2025 | 2 | 2 |
| 2026 | 2 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Reducing comb filtering for hearing devices19 May 2026US 12,634,641 B2Starkey Laboratories, Inc.
- Device and method for processing a digital signal5 May 2026US 12,620,977 B2Aktiebolaget Skf
- Digital filter arrangement for compensating group velocity dispersion in an optical transmission system4 Nov 2025US 12,463,723 B2Huawei Technologies Co., Ltd.
- Fractional Fourier Transform-based spectrum analyzer8 Jul 2025US 12,352,793 B2The Aerospace Corporation
- Method for filtering with reduced latency and associated devices13 Aug 2024US 12,061,664 B2Thales
- Reducing comb filtering for hearing devices10 Sep 2026US 2026/0270628 A1Starkey Laboratories, Inc.
- Apparatus including a detector25 Sep 2025US 2025/0300634 A1NXP B. V.
- Fractional Resampler22 May 2025US 2025/0165553 A1National Instruments Corporation
- Filter processing device, filter processing method, communication system, and recording medium14 Nov 2024US 2024/0380388 A1NEC Corporation
- Reducing comb filtering for hearing devices26 Sep 2024US 2024/0323618 A1Starkey Laboratories, Inc.
Most cited
By later US patents
- Digital filter tree68US 4,839,889 AANT Nachrichtentechnik GmbH · 1989
- Method and apparatus for filtering an electronic environment with improved accuracy and efficiency and short flow-through delay45US 5,502,747 ALake DSP Pty Limited · 1996
- Digital channelizer with arbitrary output sampling frequency37US 6,356,569 B1AT&T Corp. · 2002
- FDM demultiplexer using oversampled digital filters31US 4,785,447 ANEC Corporation · 1988
- Audio processing arrangement with multiple sources22US 7,146,012 B1Koninklijke Philips Electronics N. V. · 2006