H04B 3/144
Fixed equalizers
Official title: {fixed equalizers}
H04B3/144 (Fixed equalizers) appears on 21 US grants and 16 published applications in this corpus.
Search patents in H04B- Granted patents
- 21
- Published applications
- 16
- Assignees
- 19
- Inventors
- 41
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 2 | 1 |
| 2004 | 0 | 3 |
| 2005 | 2 | 1 |
| 2006 | 0 | 0 |
| 2007 | 1 | 1 |
| 2008 | 0 | 1 |
| 2009 | 1 | 1 |
| 2010 | 2 | 1 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 1 | 0 |
| 2014 | 0 | 2 |
| 2015 | 2 | 1 |
| 2016 | 1 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 0 |
| 2019 | 0 | 0 |
| 2020 | 1 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
| 2025 | 0 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for frequency equalization and temperature compensation in radio frequency devices26 May 2026US 12,640,701 B2Smiths Interconnect Americas, Inc.
- Low frequency reduced passive equalizer26 May 2020US 10,667,384 B2Quanta Computer Inc.
- Closed-loop high-speed channel equalizer adaptation21 Mar 2017US 9,602,318 B2Texas Instruments Incorporated
- Method and apparatus for signal detection and baseline wander cancellation1 Nov 2016US 9,485,120 B1Marvell International Ltd.
- Closed-loop high-speed channel equalizer adaptation8 Sep 2015US 9,130,792 B2Texas Instruments Incorporated
- Systems and methods for frequency equalization and temperature compensation in radio frequency devices20 Feb 2025US 2025/0062737 A1Smiths Interconnect Americas, Inc.
- Systems and methods for frequency equalization and temperature compensation in radio frequency devices27 Jun 2024US 2024/0213948 A1
- Systems and methods for frequency equalization and temperature compensation in radio frequency devices15 Dec 2022US 2022/0399870 A1Smiths Interconnect Americas, Inc.
- Low frequency reduced passive equalizer23 Jan 2020US 2020/0029422 A1Quanta Computer Inc.
- Closed-loop high-speed channel equalizer adaptation26 Nov 2015US 2015/0341194 A1Texas Instruments Incorporated
Most cited
By later US patents
- Cable connector assembly with an equalization circuit board37US 6,617,939 B1Tyco Electronics Corporation · 2003
- High speed data link with transmitter equalization and receiver equalization25US 7,586,987 B2Broadcom Corporation · 2009
- Amplitude and phase equalizer19US 4,314,288 AAmpex Corporation · 1982
- Frequency characteristic adjusting circuit7US 4,336,501 ANippon Columbia Co., Ltd. · 1982
- Transistor ratio controlled CMOS transmission line equalizer5US 5,805,031 AAdvanced Micro Devices, Inc. · 1998