H03H 17/0216
Quefrency domain filters
Official title: {Quefrency domain filters}
H03H17/0216 (Quefrency domain filters) appears on 6 US grants and 5 published applications in this corpus.
Search patents in H03H- Granted patents
- 6
- Published applications
- 5
- Assignees
- 7
- Inventors
- 16
- Latest grant
- 19 Apr 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 1 |
| 2009 | 0 | 2 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 1 | 0 |
| 2013 | 1 | 1 |
| 2014 | 0 | 0 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 0 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Method of operating a hearing aid system and a hearing aid system19 Apr 2022US 11,310,607 B2Widex A/S
- Multipath interference cancellation through cepstrum analysis6 Oct 2015US 9,154,237 B2CommScope Technologies LLC
- Method and device for low delay processing26 Feb 2013US 8,385,864 B2Wolfson Dynamic Hearing Pty Ltd
- Code division multiple access (CDMA) system for calculating coefficients of filter and method for filtering a received signal25 Dec 2012US 8,341,202 B2Sunplus mMobile Inc.
- Reduction of digital filter delay13 Dec 2011US 8,078,659 B2Telefonaktiebolaget'l M Ericsson (Publ)
- Method of operating a hearing aid system and a hearing aid system2 Sep 2021US 2021/0274295 A1Widex A/S
- Multipath interference cancellation through cepstrum analysis25 Jul 2013US 2013/0189921 A1Andrew Corporation
- Method for calculating coefficients of filter and method for filtering25 Jun 2009US 2009/0164542 A1Sunplus mMobile Inc.
- Method and Device for Low Delay Processing15 Jan 2009US 2009/0017784 A1Wolfson Dynamic Hearing Pty Ltd
- Reduction of Digital Filter Delay16 Oct 2008US 2008/0256160 A1Telefonaktiebolaget'l M Ericsson (Publ)
Most cited
By later US patents
- Method and device for low delay processing33US 8,385,864 B2Wolfson Dynamic Hearing Pty Ltd · 2013
- Method for determining the transmittance of a filter circuit adapted to transform the impulse response of a filter into a minimal phase response and filter implementing this method2US 5,511,014 AAlcatel · 1996
- Code division multiple access (CDMA) system for calculating coefficients of filter and method for filtering a received signal1US 8,341,202 B2Sunplus mMobile Inc. · 2012
- Multipath interference cancellation through cepstrum analysis1US 9,154,237 B2CommScope Technologies LLC · 2015