H04L 25/03127
Using only passive components
Official title: {using only passive components (H04L25/03121 takes precedence)}
H04L25/03127 (Using only passive components) appears on 33 US grants and 25 published applications in this corpus.
Search patents in H04L- Granted patents
- 33
- Published applications
- 25
- Assignees
- 31
- Inventors
- 74
- Latest grant
- 3 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 2 | 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 | 1 | 0 |
| 2004 | 0 | 2 |
| 2005 | 1 | 0 |
| 2006 | 0 | 2 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 2 | 1 |
| 2011 | 1 | 0 |
| 2012 | 1 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 2 |
| 2016 | 1 | 1 |
| 2017 | 0 | 0 |
| 2018 | 1 | 2 |
| 2019 | 3 | 4 |
| 2020 | 1 | 1 |
| 2021 | 5 | 5 |
| 2022 | 3 | 1 |
| 2023 | 1 | 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
- Equalization method, equalization device and receiving system3 Mar 2026US 12,568,007 B2NTT, Inc.
- Front-end circuitry for a data receiver and related systems, methods, and devices7 Nov 2023US 11,811,568 B2Microchip Technology Incorporated
- Circuitry for increasing bandwidth and reducing interference in memory signals20 Sep 2022US 11,451,415 B2Micron Technology, Inc.
- Front-end circuitry for a data receiver and related systems, methods, and devices9 Aug 2022US 11,411,783 B2Microchip Technology Incorporated
- Continuous time linear equalization circuit18 Jan 2022US 11,228,470 B2NXP B. V.
- Equalization method, equalization device and receiving system5 Jun 2025US 2025/0184192 A1Nippon Telegraph and Telephone Corporation
- Apparatus and method for equalizing a digital input signal, receiver, base station and mobile device22 Aug 2024US 2024/0283678 A1Intel Corporation
- Front-end circuitry for a data receiver and related systems, methods, and devices1 Dec 2022US 2022/0385504 A1Microchip Technology Incorporated
- Front-end circuitry for a data receiver and related systems, methods, and devices25 Nov 2021US 2021/0367816 A1Microchip Technology Incorporated
- Continuous time linear equalization circuit18 Nov 2021US 2021/0359884 A1NXP B. V.
Most cited
By later US patents
- Method and apparatus converting digital signals to analog signals and simultaneous transmission of AC power and signals over wire conductors74US 5,065,133 AThe Siemon Company · 1991
- High density digital transmission system60US 4,135,057 AArthur A. Collins, Inc. · 1979
- Decision feedback equalizing apparatus20US 4,520,489 ARockwell International Corporation · 1985
- Decision feedback equalizing apparatus15US 4,583,234 ARockwell International Corporation · 1986
- Demodulator comprising a phase shift circuit for controlling outputs of an automatic equalizer13US 4,035,735 ANippon Electric Co., Ltd. · 1977