H04B 5/20
Near-field transmission systems: characterised by the transmission technique
Official title: characterised by the transmission technique; characterised by the transmission medium
H04B5/20 (Near-field transmission systems: characterised by the transmission technique) appears on 6,602 US grants and 7,770 published applications in this corpus.
Search patents in H04B- Granted patents
- 6,602
- Published applications
- 7,770
- Assignees
- 2,001
- Inventors
- 10,373
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 10 | 0 |
| 1977 | 5 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 3 | 0 |
| 1984 | 6 | 0 |
| 1985 | 7 | 0 |
| 1986 | 4 | 0 |
| 1987 | 7 | 0 |
| 1988 | 12 | 0 |
| 1989 | 3 | 0 |
| 1990 | 7 | 0 |
| 1991 | 11 | 0 |
| 1992 | 6 | 0 |
| 1993 | 7 | 0 |
| 1994 | 5 | 0 |
| 1995 | 9 | 0 |
| 1996 | 8 | 0 |
| 1997 | 10 | 0 |
| 1998 | 14 | 0 |
| 1999 | 17 | 0 |
| 2000 | 14 | 0 |
| 2001 | 20 | 1 |
| 2002 | 10 | 18 |
| 2003 | 20 | 15 |
| 2004 | 8 | 35 |
| 2005 | 18 | 42 |
| 2006 | 20 | 38 |
| 2007 | 24 | 50 |
| 2008 | 18 | 89 |
| 2009 | 23 | 123 |
| 2010 | 46 | 166 |
| 2011 | 69 | 174 |
| 2012 | 118 | 293 |
| 2013 | 173 | 472 |
| 2014 | 263 | 634 |
| 2015 | 426 | 697 |
| 2016 | 583 | 693 |
| 2017 | 686 | 702 |
| 2018 | 671 | 689 |
| 2019 | 733 | 611 |
| 2020 | 582 | 512 |
| 2021 | 483 | 487 |
| 2022 | 426 | 373 |
| 2023 | 329 | 324 |
| 2024 | 279 | 235 |
| 2025 | 260 | 186 |
| 2026 | 135 | 111 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Non-invasive method and system for detecting quality of packaged milk6 Oct 2026US 12,754,178 B2Tata Consultancy Services Limited
- Near-field communication enabled luggage item stowage bins29 Sep 2026US 12,750,091 B2AT&T Intellectual Property I, L.P.
- Device and method for performing authentication in wireless power transmission system29 Sep 2026US 12,750,092 B2LG Electronics Inc.
- Short-range wireless communication device22 Sep 2026US 12,744,321 B2Murata Manufacturing Co., Ltd.
- Near-field communication systems and methods for reducing beat frequency signals in the near-field communication systems15 Sep 2026US 12,736,571 B2NXP B.V.
- A system for enhancing nfc communication with a programmable driver inside a metal housing8 Oct 2026US 2026/0312622 A1Signify Holding B. V.
- Method for providing nfc data exchange format messages8 Oct 2026US 2026/0312623 A1Silicon Craft Technology Co., Ltd.
- Method and system for configuring a user equipment1 Oct 2026US 2026/0303449 A1NEC Corporation
- Devices, methods and systems for wireless control of medical devices24 Sep 2026US 2026/0284300 A1
- Method and apparatus for backscatter signal transmission, communication device, and readable storage medium17 Sep 2026US 2026/0278320 A1Vivo Mobile Communication Co., Ltd.
Most cited
By later US patents
- Non-contact surgical adapter electrical interface823US 10,164,466 B2Covidien LP · 2018
- Device for quantitatively measuring the relative position and orientation of two bodies in the presence of metals utilizing direct current magnetic fields735US 4,945,305 AAscension Technology Corporation · 1990
- Surgical shaft assemblies with slip ring assemblies forming capacitive channels675US 10,903,685 B2Ethicon, Inc. · 2021
- Network termination and methods for use therewith457US 9,912,381 B2AT&T Intellectual Property I, L. P. · 2018
- Wireless energy transfer using planar capacitively loaded conducting loop resonators449US 8,035,255 B2WiTricity Corporation · 2011