H03H 21/0023
Comb filters
Official title: {Comb filters}
H03H21/0023 (Comb filters) appears on 10 US grants and 5 published applications in this corpus.
Search patents in H03H- Granted patents
- 10
- Published applications
- 5
- Assignees
- 7
- Inventors
- 14
- Latest grant
- 12 Mar 2019
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 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 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 0 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 2 |
| 2018 | 1 | 1 |
| 2019 | 2 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Nonlinear signal filtering12 Mar 2019US 10,230,353 B2Apsidon, Inc.
- Receiver, communication unit, and method for down-converting a radio frequency signal5 Feb 2019US 10,200,014 B2MediaTek Singapore Pte. Ltd.
- Discrete time filter, communication unit, and method for resonant charge transfer26 Jun 2018US 10,009,012 B2MediaTek Singapore Pte. Ltd.
- Circuit and apparatus having a delay unit for reducing periodic noise11 Oct 2011US 8,036,398 B2Sony Corporation
- Adaptive comb filter for separating at least one component of a video signal3 Mar 1992US 5,093,715 ASony Corporation
- Nonlinear signal filtering4 Jul 2019US 2019/0207589 A1Apsidon, Inc.
- Nonlinear signal filtering6 Sep 2018US 2018/0254769 A1Apsidon, Inc.
- Discrete time filter, communication unit, and method for resonant charge transfer12 Jan 2017US 2017/0012607 A1MediaTek Singapore Pte. Ltd.
- Receiver, communication unit, and method for down-converting a radio frequency signal12 Jan 2017US 2017/0012655 A1MediaTek Singapore Pte. Ltd.
- Signal processing circuit, method of processing signal, audio signal processing circuit, method of processing audio signal, imaging apparatus, method of processing audio signal with imaging apparatus, recording apparatus, method of recording, playing apparatus, and method of playing30 Nov 2006US 2006/0269252 A1Sony Corporation
Most cited
By later US patents
- Image filtering apparatus and method29US 4,783,839 ANational Research Development Corporation · 1988
- Adaptive comb filter23US 4,974,065 AMitsubishi Denki Kabushiki Kaisha · 1990
- Adaptive comb filter for artifact-free decoding9US 4,847,682 ANorth American Philips Corporation · 1989
- Adaptive comb filter for separating at least one component of a video signal6US 5,093,715 ASony Corporation · 1992
- Adaptive comb filter for artifact-free decoding5US 4,979,023 A1990