H04B 1/40
Circuits
H04B1/40 (Circuits) appears on 11,146 US grants and 11,260 published applications in this corpus.
Search patents in H04B- Granted patents
- 11,146
- Published applications
- 11,260
- Assignees
- 2,348
- Inventors
- 17,544
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 21 | 0 |
| 1977 | 29 | 0 |
| 1978 | 28 | 0 |
| 1979 | 35 | 0 |
| 1980 | 30 | 0 |
| 1981 | 26 | 0 |
| 1982 | 31 | 0 |
| 1983 | 29 | 0 |
| 1984 | 28 | 0 |
| 1985 | 31 | 0 |
| 1986 | 18 | 0 |
| 1987 | 33 | 0 |
| 1988 | 19 | 0 |
| 1989 | 21 | 0 |
| 1990 | 28 | 0 |
| 1991 | 20 | 0 |
| 1992 | 31 | 0 |
| 1993 | 54 | 0 |
| 1994 | 66 | 0 |
| 1995 | 61 | 0 |
| 1996 | 81 | 0 |
| 1997 | 71 | 0 |
| 1998 | 131 | 0 |
| 1999 | 135 | 0 |
| 2000 | 131 | 0 |
| 2001 | 128 | 47 |
| 2002 | 129 | 175 |
| 2003 | 104 | 193 |
| 2004 | 154 | 287 |
| 2005 | 146 | 252 |
| 2006 | 260 | 293 |
| 2007 | 177 | 281 |
| 2008 | 163 | 258 |
| 2009 | 152 | 219 |
| 2010 | 237 | 252 |
| 2011 | 226 | 268 |
| 2012 | 278 | 285 |
| 2013 | 311 | 418 |
| 2014 | 394 | 526 |
| 2015 | 527 | 586 |
| 2016 | 602 | 662 |
| 2017 | 651 | 684 |
| 2018 | 685 | 636 |
| 2019 | 783 | 757 |
| 2020 | 745 | 711 |
| 2021 | 619 | 677 |
| 2022 | 601 | 621 |
| 2023 | 500 | 664 |
| 2024 | 505 | 560 |
| 2025 | 494 | 531 |
| 2026 | 387 | 417 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04B 1/44Transmit/receive switching2,590
- H04B 1/50Using different frequencies for the two directions of communication2,500
- H04B 1/403Using the same oscillator for generating both the transmitter frequency and the1,985
- H04B 1/401For selecting or indicating operating mode838
- H04B 1/54Using the same frequency for two directions of communication754
Recent patents
- Methods and apparatuses for determining whether an anomalous event occurred locally at a first entity6 Oct 2026US 12,756,413 B2Telefonaktiebolaget LM Ericsson (publ)
- Transmitter/receiver, transmission/reception device, and transmission/reception method6 Oct 2026US 12,756,419 B2NEC Corporation
- Subscriber station for a serial bus system, and method for communication with differential signals in a serial bus system6 Oct 2026US 12,756,420 B2Robert Bosch GmbH
- Electronic device including coupler29 Sep 2026US 12,750,074 B2Samsung Electronics Co., Ltd.
- Wireless RF front end circuit and wireless signal boosting device having the wireless RF front end circuit29 Sep 2026US 12,750,082 B2Moxa Inc.
- Wireless Scour Detection System with Remote Vibration Sensing via ESP32 and ESP-NOW8 Oct 2026US 2026/0312613 A1
- Radio frequency unit, signal bias unit, terminal element, and fusion system8 Oct 2026US 2026/0312614 A1Huawei Technologies Co., Ltd.
- Flexible communication architectures and techniques for media playback systems8 Oct 2026US 2026/0312615 A1
- Multi-antenna system for non-terrestrial communications8 Oct 2026US 2026/0312626 A1Astranis Space Technologies Corp.
- Method of controlling a multi-antenna transmitter and receiver arrangement (matara), non-transitory computer-readable storage medium, computer program products, control unit, matara, wireless device and chips therefor8 Oct 2026US 2026/0312632 A1Beammwave AB
Most cited
By later US patents
- Systems and methods for wireless power640US 8,115,448 B22012
- Method and repeater for broadband distribution589US 9,893,795 B1AT&T Intellectual Property I, L. P. · 2018
- Transmission device with mode division multiplexing and methods for use therewith487US 9,544,006 B2AT&T Intellectual Property I, L. P. · 2017
- Guided-wave transmission device with non-fundamental mode propagation and methods for use therewith468US 9,627,768 B2AT&T Intellectual Property I, L. P. · 2017
- Guided wave communication system with interference cancellation and methods for use therewith435US 10,003,364 B1AT&T Intellectual Property I, L. P. · 2018