H04B 7/015
Reducing echo effects
H04B7/015 (Reducing echo effects) appears on 55 US grants and 40 published applications in this corpus.
Search patents in H04B- Granted patents
- 55
- Published applications
- 40
- Assignees
- 40
- Inventors
- 128
- Latest grant
- 23 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 4 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 3 | 0 |
| 1999 | 2 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 3 |
| 2010 | 0 | 1 |
| 2011 | 1 | 1 |
| 2012 | 1 | 0 |
| 2013 | 2 | 2 |
| 2014 | 1 | 4 |
| 2015 | 2 | 11 |
| 2016 | 7 | 4 |
| 2017 | 4 | 1 |
| 2018 | 3 | 1 |
| 2019 | 0 | 0 |
| 2020 | 2 | 2 |
| 2021 | 2 | 1 |
| 2022 | 1 | 1 |
| 2023 | 1 | 4 |
| 2024 | 3 | 2 |
| 2025 | 3 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Adaptive biasing procedure to increase auxiliary PA efficiency for an integrated echo canceller23 Dec 2025US 12,506,515 B2Zebra Technologies Corporation
- Method and system for eliminating echo in the reproduction of radio signals transmitted via a radio channel25 Nov 2025US 12,483,660 B2Frequentis AG
- Method and apparatus for eliminating same-frequency and adjacent-frequency interference in analog domain8 Apr 2025US 12,273,156 B2Anywave Communication Technologies Co., Ltd.
- Echo cancellation method and transceiver12 Nov 2024US 12,143,146 B2Huawei Technologies Co., Ltd.
- Communication device and method for echo signals management14 May 2024US 11,984,945 B2Movandi Corporation
- Adaptive Biasing Procedure to Increase Auxiliary PA Efficiency for an Integrated Echo Canceller10 Jul 2025US 2025/0226856 A1Zebra Technologies Corporation
- Mimo interference cancellation28 Nov 2024US 2024/0396600 A1Forefront RF Ltd
- Electronic device and method for detecting error of a signal18 Apr 2024US 2024/0127784 A1Samsung Electronics Co., Ltd.
- Communication device and method for echo signals management17 Aug 2023US 2023/0261698 A1Movandi Corporation
- Method and apparatus for eliminating same-frequency and adjacent-frequency interference in analog domain22 Jun 2023US 2023/0198577 A1Anywave Communication Technologies Co., Ltd.
Most cited
By later US patents
- Adaptive noise cancelling arrangement, a noise reduction system and a transceiver175US 5,740,256 AU. S. Philips Corporation · 1998
- Echo canceller for non-linear circuits175US 5,796,819 AEricsson Inc. · 1998
- Technique for high rate digital transmission over a dynamic dispersive channel107US 4,365,338 AHarris Corporation · 1982
- Digital subscriber loop interface unit94US 5,617,450 AFujitsu Limited · 1997
- Fast adapting fading channel equalizer88US 4,328,585 ASignatron, Inc. · 1982