H04L 25/0278
Arrangements for impedance matching
Official title: {Arrangements for impedance matching}
H04L25/0278 (Arrangements for impedance matching) appears on 1,098 US grants and 902 published applications in this corpus.
Search patents in H04L- Granted patents
- 1,098
- Published applications
- 902
- Assignees
- 401
- Inventors
- 1,737
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 2 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 8 | 0 |
| 1995 | 12 | 0 |
| 1996 | 16 | 0 |
| 1997 | 14 | 0 |
| 1998 | 26 | 0 |
| 1999 | 10 | 0 |
| 2000 | 26 | 0 |
| 2001 | 37 | 6 |
| 2002 | 37 | 47 |
| 2003 | 26 | 29 |
| 2004 | 46 | 44 |
| 2005 | 48 | 50 |
| 2006 | 45 | 48 |
| 2007 | 43 | 42 |
| 2008 | 46 | 51 |
| 2009 | 44 | 45 |
| 2010 | 42 | 52 |
| 2011 | 49 | 41 |
| 2012 | 40 | 50 |
| 2013 | 52 | 40 |
| 2014 | 49 | 45 |
| 2015 | 58 | 46 |
| 2016 | 43 | 36 |
| 2017 | 46 | 29 |
| 2018 | 28 | 32 |
| 2019 | 43 | 37 |
| 2020 | 54 | 23 |
| 2021 | 24 | 22 |
| 2022 | 18 | 18 |
| 2023 | 12 | 19 |
| 2024 | 14 | 19 |
| 2025 | 20 | 18 |
| 2026 | 11 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Apparatus and methods for measuring signals440US 10,027,427 B2AT&T Intellectual Property I, L. P. · 2018
- Self-adjusting impedance matching driver325US 5,134,311 AInternational Business Machines Corporation · 1992
- Differential signal transmission circuit244US 6,208,161 B1Advantest Corporation · 2001
- Improving signal integrity in differential signal systems226US 6,886,065 B2Hewlett-Packard Development Company, L. P. · 2005
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