H04B 3/02
Details
H04B3/02 (Details) appears on 6,180 US grants and 4,791 published applications in this corpus.
Search patents in H04B- Granted patents
- 6,180
- Published applications
- 4,791
- Assignees
- 1,648
- Inventors
- 8,661
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 66 | 0 |
| 1977 | 86 | 0 |
| 1978 | 47 | 0 |
| 1979 | 36 | 0 |
| 1980 | 46 | 0 |
| 1981 | 45 | 0 |
| 1982 | 33 | 0 |
| 1983 | 26 | 0 |
| 1984 | 40 | 0 |
| 1985 | 46 | 0 |
| 1986 | 60 | 0 |
| 1987 | 42 | 0 |
| 1988 | 49 | 0 |
| 1989 | 57 | 0 |
| 1990 | 47 | 0 |
| 1991 | 34 | 0 |
| 1992 | 33 | 0 |
| 1993 | 33 | 0 |
| 1994 | 50 | 0 |
| 1995 | 56 | 0 |
| 1996 | 70 | 0 |
| 1997 | 56 | 0 |
| 1998 | 90 | 0 |
| 1999 | 68 | 0 |
| 2000 | 69 | 0 |
| 2001 | 88 | 47 |
| 2002 | 87 | 97 |
| 2003 | 118 | 157 |
| 2004 | 127 | 139 |
| 2005 | 123 | 164 |
| 2006 | 171 | 143 |
| 2007 | 118 | 157 |
| 2008 | 122 | 142 |
| 2009 | 124 | 162 |
| 2010 | 166 | 206 |
| 2011 | 129 | 175 |
| 2012 | 220 | 163 |
| 2013 | 212 | 207 |
| 2014 | 250 | 296 |
| 2015 | 298 | 281 |
| 2016 | 326 | 328 |
| 2017 | 310 | 269 |
| 2018 | 313 | 256 |
| 2019 | 346 | 310 |
| 2020 | 309 | 220 |
| 2021 | 222 | 225 |
| 2022 | 178 | 193 |
| 2023 | 182 | 150 |
| 2024 | 164 | 131 |
| 2025 | 123 | 100 |
| 2026 | 69 | 73 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04B 3/20Reducing echo effects or singing1,794
- H04B 3/46Monitoring1,669
- H04B 3/32Reducing cross-talk1,244
- H04B 3/04Control of transmission960
- H04B 3/36Repeater circuits463
- H04B 3/30Reducing interference caused by unbalanced currents in a normally balanced line208
- H04B 3/44Arrangements for feeding power to a repeater along the transmission line185
- H04B 3/28Reducing interference caused by currents induced in cable sheathing or armouring106
Recent patents
- Electronic device and method for calibrating temperature related scattering matrix of temperature sensitive device6 Oct 2026US 12,754,080 B2Mediatek Inc.
- Leaky coaxial cable and communication system29 Sep 2026US 12,750,088 B2Huawei Technologies Co., Ltd.
- Dual CML echo canceller with single-ended to differential conversion22 Sep 2026US 12,744,561 B2Samsung Electronics Co., Ltd.
- Equalizer with all-pass filter delay22 Sep 2026US 12,744,695 B2Cisco Technology, Inc.
- Can transmitter circuit with current smoothing15 Sep 2026US 12,738,974 B2Texas Instruments Incorporated
- Methods, controllers, and machine-readable storage media for automated commissioning of equipment8 Oct 2026US 2026/0313820 A1PassiveLogic, Inc.
- Methods and apparatus for echo cancellation in transceivers1 Oct 2026US 2026/0303148 A1
- Edge communication system with cascaded repeater devices over wired medium1 Oct 2026US 2026/0303149 A1Peltbeam Inc.
- Comprehensive System Design to Address the Needs for Virtual Segmentation of the Coaxial Cable Plant1 Oct 2026US 2026/0303397 A1HyperX Holdings LLC
- Equalizer circuit and calibration method therefor1 Oct 2026US 2026/0303416 A1Novatek Microelectronics Corp.
Most cited
By later US patents
- Millimeter-wave surface-wave communications708US 8,897,697 B1AT&T Intellectual Property I, L. P. · 2014
- Backhaul link for distributed antenna system604US 9,113,347 B2AT&T Intellectual Property I, L. P. · 2015
- Method and repeater for broadband distribution589US 9,893,795 B1AT&T Intellectual Property I, L. P. · 2018
- Transmission medium having multiple cores and methods for use therewith526US 9,490,869 B1AT&T Intellectual Property I, L. P. · 2016
- Access point and methods for use in a radio distributed antenna system479US 10,230,428 B1AT&T Intellectual Property I, L. P. · 2019