H04B 3/143
Using amplitude-frequency equalisers
Official title: {using amplitude-frequency equalisers}
H04B3/143 (Using amplitude-frequency equalisers) appears on 198 US grants and 118 published applications in this corpus.
Search patents in H04B- Granted patents
- 198
- Published applications
- 118
- Assignees
- 119
- Inventors
- 318
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 8 | 0 |
| 1978 | 7 | 0 |
| 1979 | 1 | 0 |
| 1980 | 6 | 0 |
| 1981 | 7 | 0 |
| 1982 | 4 | 0 |
| 1983 | 4 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 8 | 0 |
| 1999 | 1 | 0 |
| 2000 | 5 | 0 |
| 2001 | 5 | 3 |
| 2002 | 2 | 3 |
| 2003 | 9 | 6 |
| 2004 | 1 | 6 |
| 2005 | 6 | 5 |
| 2006 | 3 | 7 |
| 2007 | 3 | 7 |
| 2008 | 2 | 5 |
| 2009 | 9 | 5 |
| 2010 | 6 | 9 |
| 2011 | 5 | 4 |
| 2012 | 9 | 4 |
| 2013 | 9 | 4 |
| 2014 | 4 | 8 |
| 2015 | 8 | 6 |
| 2016 | 5 | 3 |
| 2017 | 10 | 10 |
| 2018 | 6 | 2 |
| 2019 | 4 | 3 |
| 2020 | 4 | 3 |
| 2021 | 2 | 2 |
| 2022 | 2 | 6 |
| 2023 | 4 | 1 |
| 2024 | 0 | 3 |
| 2025 | 2 | 1 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Equalizer with all-pass filter delay22 Sep 2026US 12,744,695 B2Cisco Technology, Inc.
- Systems and methods for frequency equalization and temperature compensation in radio frequency devices26 May 2026US 12,640,701 B2Smiths Interconnect Americas, Inc.
- Graphical user interface for controlling extended spectrum DOCSIS amplifier5 May 2026US 12,619,344 B2ARRIS Enterprises LLC
- Amplifier for extended spectrum DOCSIS9 Dec 2025US 12,493,403 B2ARRIS Enterprises LLC
- Receiver equalization circuitry using variable termination and T-coil12 Aug 2025US 12,388,490 B2Advanced Micro Devices, Inc.
- Equalizer with all-pass filter delay9 Jul 2026US 2026/0197212 A1Cisco Technology, Inc.
- Amplifier for extended spectrum docsis12 Mar 2026US 2026/0072583 A1ARRIS Enterprises LLC
- Systems and methods for frequency equalization and temperature compensation in radio frequency devices20 Feb 2025US 2025/0062737 A1Smiths Interconnect Americas, Inc.
- Amplifier for extended spectrum docsis8 Aug 2024US 2024/0267082 A1ARRIS Enterprises LLC
- Graphical user interface for controlling extended spectrum docsis amplifier1 Aug 2024US 2024/0256113 A1ARRIS Enterprises LLC
Most cited
By later US patents
- Analog receive equalizer for digital-subscriber-line communications system165US 6,226,322 B1Texas Instruments Incorporated · 2001
- Equalizer circuit, communication system, and method that is adaptive to varying launch amplitudes for reducing receiver error56US 7,620,101 B1Cypress Semiconductor Corporation · 2009
- Adaptive cable equalizer55US 5,978,417 ANational Semiconductor Corporation · 1999
- Variable equalizer49US 4,187,479 AHitachi, Ltd. · 1980
- Adaptive receive-side equalization46US 7,639,736 B2Rambus Inc. · 2009