H04H 2201/20
Digital audio broadcasting [dab]
Official title: digital audio broadcasting [DAB]
H04H2201/20 (Digital audio broadcasting [dab]) appears on 294 US grants and 227 published applications in this corpus.
Search patents in H04H- Granted patents
- 294
- Published applications
- 227
- Assignees
- 99
- Inventors
- 369
- Latest grant
- 11 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 6 | 0 |
| 1997 | 1 | 0 |
| 1998 | 14 | 0 |
| 1999 | 11 | 0 |
| 2000 | 16 | 0 |
| 2001 | 12 | 6 |
| 2002 | 17 | 11 |
| 2003 | 13 | 18 |
| 2004 | 14 | 14 |
| 2005 | 8 | 15 |
| 2006 | 9 | 15 |
| 2007 | 11 | 12 |
| 2008 | 4 | 5 |
| 2009 | 7 | 5 |
| 2010 | 6 | 6 |
| 2011 | 6 | 3 |
| 2012 | 5 | 12 |
| 2013 | 7 | 19 |
| 2014 | 9 | 9 |
| 2015 | 22 | 8 |
| 2016 | 6 | 16 |
| 2017 | 17 | 3 |
| 2018 | 10 | 7 |
| 2019 | 19 | 18 |
| 2020 | 13 | 9 |
| 2021 | 13 | 4 |
| 2022 | 5 | 5 |
| 2023 | 4 | 2 |
| 2024 | 2 | 2 |
| 2025 | 3 | 2 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Advertising audience monitoring in a content distribution system11 Nov 2025US 12,470,311 B2TELECOM ITALIA S p.A.
- Synchronizing playback by media playback devices28 Oct 2025US 12,457,278 B2Sonos, Inc.
- Emergency alert secondary audio substitution in digital radio broadcasting21 Oct 2025US 12,451,986 B2iBiquity Digital Corporation
- Content linking multicast streaming for broadcast radio11 Jun 2024US 12,009,909 B2iBiquity Digital Corporation
- Playback device19 Mar 2024US 11,934,739 B2Sonos, Inc.
- Emergency Alert Secondary Audio Substitution In Digital Radio Broadcasting2 Apr 2026US 2026/0095269 A1iBiquity Digital Corporation
- Wireless Audio Data Transmission Method and Related Devices27 Nov 2025US 2025/0365085 A1Zgmicro Wuxi Corporation
- Concepts for a digital radio signal12 Jun 2025US 2025/0192908 A1Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- Emergency alert secondary audio substitution in digital radio broadcasting31 Oct 2024US 2024/0364440 A1iBiquity Digital Corporation
- Synchronizing Playback by Media Playback Devices14 Mar 2024US 2024/0086144 A1Sonos, Inc.
Most cited
By later US patents
- System and method for synchronizing operations among a plurality of independently clocked digital data processing devices1,949US 8,234,395 B2Sonos, Inc. · 2012
- Method and apparatus for remotely configuring a wireless communication device527US 6,728,531 B1Motorola, Inc. · 2004
- Method and apparatus for saving enhanced information contained in content sent to a wireless communication device454US 6,829,475 B1Motorola, Inc. · 2004
- Method and apparatus for enabling the selection of content on a wireless communication device365US 6,725,022 B1Motorola, Inc. · 2004
- Systems and methods for synchronizing operations among a plurality of independently clocked digital data processing devices without a voltage controlled crystal oscillator262US 8,370,678 B2Sonos, Inc. · 2013