H04L 25/24
Relay circuits using discharge tubes or semiconductor devices
Official title: Relay circuits using discharge tubes or semiconductor devices {(H04L25/22 takes precedence)}
H04L25/24 (Relay circuits using discharge tubes or semiconductor devices) appears on 186 US grants and 103 published applications in this corpus.
Search patents in H04L- Granted patents
- 186
- Published applications
- 103
- Assignees
- 125
- Inventors
- 348
- Latest grant
- 3 Feb 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 5 | 0 |
| 1978 | 7 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 5 | 0 |
| 1982 | 7 | 0 |
| 1983 | 7 | 0 |
| 1984 | 6 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 5 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 6 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 4 | 8 |
| 2003 | 1 | 6 |
| 2004 | 6 | 9 |
| 2005 | 1 | 7 |
| 2006 | 4 | 5 |
| 2007 | 6 | 4 |
| 2008 | 1 | 7 |
| 2009 | 9 | 9 |
| 2010 | 8 | 11 |
| 2011 | 12 | 10 |
| 2012 | 5 | 6 |
| 2013 | 12 | 5 |
| 2014 | 8 | 7 |
| 2015 | 4 | 1 |
| 2016 | 2 | 0 |
| 2017 | 4 | 0 |
| 2018 | 2 | 0 |
| 2019 | 3 | 1 |
| 2020 | 0 | 0 |
| 2021 | 0 | 0 |
| 2022 | 3 | 2 |
| 2023 | 3 | 2 |
| 2024 | 1 | 2 |
| 2025 | 0 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Retimer with slicer level adjustment3 Feb 2026US 12,542,556 B2Texas Instruments Incorporated
- Quadrature circuit interconnect architecture with clock forwarding7 May 2024US 11,979,480 B2International Business Machines Corporation
- Phase interpolator circuitry for a bit-level mode retimer22 Aug 2023US 11,736,266 B2Diodes Incorporated
- Signal relay apparatus and method having frequency calibration mechanism23 May 2023US 11,658,852 B2Realtek Semiconductor Corp.
- Retiming circuit module, signal transmission system and signal transmission method7 Feb 2023US 11,575,496 B1Phison Electronics Corp.
- Retimer with slicer level adjustment9 Jul 2026US 2026/0197006 A1
- Quadrature circuit interconnect architecture with clock forwarding21 Mar 2024US 2024/0097872 A1International Business Machines Corporation
- Retimer with slicer level adjustment25 Jan 2024US 2024/0030926 A1Texas Instruments Incorporated
- Phase interpolator circuitry for a bit-level mode retimer20 Apr 2023US 2023/0122556 A1Diodes Incorporated
- Signal relay apparatus and method having frequency calibration mechanism16 Feb 2023US 2023/0046082 A1Realtek Semiconductor Corp.
Most cited
By later US patents
- Universal lan power line carrier repeater system and method163US 5,818,821 AIntelogis, Inc. · 1998
- Long subscriber loops using automatic gain control mid-span extender unit110US 7,142,619 B2Symmetricom, Inc. · 2006
- Loop extender with communications, control, and diagnostics109US 7,194,023 B22Wire, Inc. · 2007
- Network transceiver having circuitry for referencing transmit data to a selected input clock104US 6,430,695 B1Advanced Micro Devices, Inc. · 2002
- Integrated circuit with dual eye openers77US 7,099,382 B2Finisar Corporation · 2006