H04B 3/54
Systems for transmission via power distribution lines
H04B3/54 (Systems for transmission via power distribution lines) appears on 4,303 US grants and 4,449 published applications in this corpus.
Search patents in H04B- Granted patents
- 4,303
- Published applications
- 4,449
- Assignees
- 1,530
- Inventors
- 6,298
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 15 | 0 |
| 1977 | 14 | 0 |
| 1978 | 12 | 0 |
| 1979 | 7 | 0 |
| 1980 | 12 | 0 |
| 1981 | 11 | 0 |
| 1982 | 13 | 0 |
| 1983 | 16 | 0 |
| 1984 | 25 | 0 |
| 1985 | 19 | 0 |
| 1986 | 16 | 0 |
| 1987 | 29 | 0 |
| 1988 | 15 | 0 |
| 1989 | 27 | 0 |
| 1990 | 15 | 0 |
| 1991 | 9 | 0 |
| 1992 | 8 | 0 |
| 1993 | 16 | 0 |
| 1994 | 13 | 0 |
| 1995 | 17 | 0 |
| 1996 | 25 | 0 |
| 1997 | 17 | 0 |
| 1998 | 34 | 0 |
| 1999 | 38 | 0 |
| 2000 | 35 | 0 |
| 2001 | 36 | 19 |
| 2002 | 40 | 84 |
| 2003 | 43 | 99 |
| 2004 | 46 | 130 |
| 2005 | 63 | 147 |
| 2006 | 102 | 143 |
| 2007 | 94 | 185 |
| 2008 | 91 | 165 |
| 2009 | 67 | 140 |
| 2010 | 123 | 148 |
| 2011 | 123 | 139 |
| 2012 | 157 | 218 |
| 2013 | 152 | 243 |
| 2014 | 204 | 245 |
| 2015 | 235 | 285 |
| 2016 | 279 | 305 |
| 2017 | 326 | 280 |
| 2018 | 270 | 257 |
| 2019 | 310 | 257 |
| 2020 | 305 | 240 |
| 2021 | 184 | 173 |
| 2022 | 157 | 141 |
| 2023 | 144 | 144 |
| 2024 | 137 | 115 |
| 2025 | 115 | 93 |
| 2026 | 42 | 54 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Motor control device29 Sep 2026US 12,749,996 B2Lutron Technology Company LLC
- Communication device and communication signal generation method29 Sep 2026US 12,750,089 B2Panasonic Intellectual Property Management Co., Ltd.
- Industrial wireless system, root node and programmable logic controller15 Sep 2026US 12,739,302 B2Keyence Corporation
- Programmable power supplies for cellular base stations and related methods of reducing power loss in cellular systems8 Sep 2026US 12,730,469 B2Outdoor Wireless Networks LLC
- System and method for power line communications over a standard tractor-trailer electrical connection1 Sep 2026US 12,726,229 B2Bendix Commercial Vehicle Systems LLC
- Air conditioning circuit and multi-split system1 Oct 2026US 2026/0298496 A1Foshan Shunde Midea Electric Science and Technology Co., Ltd.
- Systems, Apparatuses, and Methods for Voltage Safety Detection and Voltage Overshoot Management24 Sep 2026US 2026/0291469 A1Panduit Corp.
- High efficiency low-power active cable architecture24 Sep 2026US 2026/0291483 A1Lerain Technology Co., Ltd.
- Power and data transmission device24 Sep 2026US 2026/0291545 A1Safran Electronics & Defense
- Electric shaver with imaging capability24 Sep 2026US 2026/0292317 A1May Patents Ltd.
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