H05K 1/0253
Impedance adaptations of transmission lines by special lay-out of power planes
Official title: {Impedance adaptations of transmission lines by special lay-out of power planes, e.g. providing openings (H05K1/0251 takes precedence)}
H05K1/0253 (Impedance adaptations of transmission lines by special lay-out of power planes) appears on 406 US grants and 435 published applications in this corpus.
Search patents in H05K- Granted patents
- 406
- Published applications
- 435
- Assignees
- 191
- Inventors
- 764
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 6 | 0 |
| 1995 | 1 | 0 |
| 1996 | 2 | 0 |
| 1997 | 3 | 0 |
| 1998 | 5 | 0 |
| 1999 | 6 | 0 |
| 2000 | 3 | 0 |
| 2001 | 11 | 7 |
| 2002 | 8 | 10 |
| 2003 | 9 | 7 |
| 2004 | 6 | 9 |
| 2005 | 5 | 13 |
| 2006 | 8 | 16 |
| 2007 | 9 | 20 |
| 2008 | 16 | 20 |
| 2009 | 13 | 27 |
| 2010 | 11 | 17 |
| 2011 | 14 | 25 |
| 2012 | 24 | 23 |
| 2013 | 12 | 17 |
| 2014 | 27 | 43 |
| 2015 | 18 | 29 |
| 2016 | 27 | 19 |
| 2017 | 28 | 16 |
| 2018 | 24 | 12 |
| 2019 | 13 | 17 |
| 2020 | 16 | 16 |
| 2021 | 9 | 21 |
| 2022 | 20 | 5 |
| 2023 | 10 | 17 |
| 2024 | 12 | 12 |
| 2025 | 11 | 10 |
| 2026 | 6 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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Most cited
By later US patents
- Multi-layer circuit substrate having orthogonal grid ground and power planes188US 6,184,477 B2KYOCERA Corporation · 2001
- Multilayer wiring structure for attaining high-speed signal propagation143US 5,633,479 AKabushiki Kaisha Toshiba · 1997
- Magnetic disk drive having a suspension mounted transmission line including read and write conductors and a lower conductor121US 7,319,573 B2Hitachi Global Storage Technologies Japan, Ltd. · 2008
- Flexible circuit for establishing electrical connectivity with optical subassembly98US 7,439,449 B1Finisar Corporation · 2008
- Circuit board voltage plane impedance matching81US 6,150,895 ADell USA, L. P. · 2000