H04B 3/00
Line transmission systems
Official title: Line transmission systems (combined with near-field transmission systems H04B5/00)
H04B3/00 (Line transmission systems) appears on 10,507 US grants and 9,245 published applications in this corpus.
Search patents in H04B- Granted patents
- 10,507
- Published applications
- 9,245
- Assignees
- 2,858
- Inventors
- 14,701
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 85 | 0 |
| 1977 | 103 | 0 |
| 1978 | 61 | 0 |
| 1979 | 43 | 0 |
| 1980 | 59 | 0 |
| 1981 | 56 | 0 |
| 1982 | 47 | 0 |
| 1983 | 42 | 0 |
| 1984 | 64 | 0 |
| 1985 | 65 | 0 |
| 1986 | 78 | 0 |
| 1987 | 74 | 0 |
| 1988 | 65 | 0 |
| 1989 | 86 | 0 |
| 1990 | 64 | 0 |
| 1991 | 44 | 0 |
| 1992 | 46 | 0 |
| 1993 | 51 | 0 |
| 1994 | 67 | 0 |
| 1995 | 75 | 0 |
| 1996 | 95 | 0 |
| 1997 | 74 | 0 |
| 1998 | 126 | 0 |
| 1999 | 108 | 0 |
| 2000 | 108 | 0 |
| 2001 | 126 | 61 |
| 2002 | 129 | 180 |
| 2003 | 163 | 260 |
| 2004 | 173 | 271 |
| 2005 | 184 | 294 |
| 2006 | 265 | 283 |
| 2007 | 207 | 343 |
| 2008 | 205 | 305 |
| 2009 | 194 | 304 |
| 2010 | 290 | 355 |
| 2011 | 256 | 321 |
| 2012 | 378 | 384 |
| 2013 | 364 | 449 |
| 2014 | 450 | 536 |
| 2015 | 527 | 561 |
| 2016 | 604 | 624 |
| 2017 | 624 | 559 |
| 2018 | 593 | 531 |
| 2019 | 663 | 574 |
| 2020 | 608 | 461 |
| 2021 | 401 | 397 |
| 2022 | 365 | 340 |
| 2023 | 311 | 286 |
| 2024 | 292 | 244 |
| 2025 | 238 | 189 |
| 2026 | 111 | 133 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04B 3/02Details6,180
- H04B 3/54Systems for transmission via power distribution lines4,303
- H04B 3/52Systems for transmission between fixed stations via waveguides618
- H04B 3/50Systems for transmission between fixed stations via two-conductor transmission lines196
- H04B 3/60Systems for communication between relatively movable stations46
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Most cited
By later US patents
- Wired, wireless, infrared, and powerline audio entertainment systems1,763US 7,853,341 B2KSC Industries, Inc. · 2010
- Wired, wireless, infrared, and powerline audio entertainment systems1,762US 8,103,009 B2KSC Industries, Inc. · 2012
- System and method for data retrieval in AC power tools via an AC line cord1,103US 7,346,406 B2Black & Decker Inc. · 2008
- Power receptacle wireless access point devices for networked living and work spaces1,051US 9,325,516 B2Ubiquiti Networks, Inc. · 2016
- Patient care system886US 4,835,372 AClinCom Incorporated · 1989