H03H 17/0277
Comprising recursive filters
Official title: {comprising recursive filters}
H03H17/0277 (Comprising recursive filters) appears on 24 US grants and 17 published applications in this corpus.
Search patents in H03H- Granted patents
- 24
- Published applications
- 17
- Assignees
- 25
- Inventors
- 48
- Latest grant
- 19 Jul 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 3 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 2 | 1 |
| 2007 | 2 | 3 |
| 2008 | 0 | 3 |
| 2009 | 1 | 0 |
| 2010 | 2 | 1 |
| 2011 | 0 | 0 |
| 2012 | 2 | 1 |
| 2013 | 0 | 0 |
| 2014 | 2 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 1 |
| 2017 | 1 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 2 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Method and system for ultra-narrowband filtering with signal processing using a concept called prism19 Jul 2022US 11,394,370 B2Oxford University Innovation Limited
- System aspects of an audio codec5 Jun 2018US 9,990,935 B2Dolby International AB
- Apparatuses and methodologies for decision feedback equalization using particle swarm optimization4 Apr 2017US 9,614,699 B2King Fahd University of Petroleum and Minerals
- Multi-standard multi-rate filter19 May 2015US 9,037,625 B2CSR Technology Inc.
- Parallel infinite impulse response filter13 May 2014US 8,725,785 B1L-3 Communications Corporation
- Parallel implementations of frame filters with recursive transfer functions9 Dec 2021US 2021/0384892 A1The MathWorks, Inc.
- Method and system for ultra-narrowband filtering with signal processing using a concept called prism29 Jul 2021US 2021/0234536 A1Oxford University Innovation Limited
- Apparatuses and methodologies for decision feedback equalization using particle swarm optimization16 Feb 2017US 2017/0048088 A1King Fahd University of Petroleum and Minerals
- System aspects of an audio codec7 Jul 2016US 2016/0196831 A1Dolby International AB
- Multi-standard multi-rate filter4 Oct 2012US 2012/0254272 A1CSR Technology Inc.
Most cited
By later US patents
- Method and apparatus for the transmission of time discrete signals between systems operating at different sampling rates26US 4,725,972 AANT Nachrichtentechnik GmbH · 1988
- Recursive filters for polyphase structures23US 5,926,455 ALucent Technologies Inc. · 1999
- Digital signal synthesizer17US 4,782,324 AGenRad, Inc. · 1988
- Multiplierless interpolator for a delta-sigma digital to analog converter17US 6,313,773 B1Sonic Innovations, Inc. · 2001
- Facility for reducing a data rate11US 6,163,787 A2000