H04H 40/27
Specially adapted for broadcast systems covered by groups h04h20/53 - h04h20/95
Official title: specially adapted for broadcast systems covered by groups H04H20/53 - H04H20/95
H04H40/27 (Specially adapted for broadcast systems covered by groups h04h20/53 - h04h20/95) appears on 1,359 US grants and 1,240 published applications in this corpus.
Search patents in H04H- Granted patents
- 1,359
- Published applications
- 1,240
- Assignees
- 458
- Inventors
- 2,004
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 8 | 0 |
| 1979 | 6 | 0 |
| 1980 | 5 | 0 |
| 1981 | 12 | 0 |
| 1982 | 6 | 0 |
| 1983 | 10 | 0 |
| 1984 | 14 | 0 |
| 1985 | 6 | 0 |
| 1986 | 5 | 0 |
| 1987 | 8 | 0 |
| 1988 | 4 | 0 |
| 1989 | 4 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 9 | 0 |
| 1994 | 14 | 0 |
| 1995 | 9 | 0 |
| 1996 | 17 | 0 |
| 1997 | 16 | 0 |
| 1998 | 33 | 0 |
| 1999 | 42 | 0 |
| 2000 | 29 | 0 |
| 2001 | 26 | 14 |
| 2002 | 23 | 52 |
| 2003 | 20 | 60 |
| 2004 | 28 | 65 |
| 2005 | 33 | 72 |
| 2006 | 51 | 101 |
| 2007 | 53 | 106 |
| 2008 | 39 | 89 |
| 2009 | 61 | 93 |
| 2010 | 71 | 78 |
| 2011 | 101 | 57 |
| 2012 | 80 | 55 |
| 2013 | 80 | 68 |
| 2014 | 76 | 63 |
| 2015 | 71 | 57 |
| 2016 | 65 | 39 |
| 2017 | 47 | 41 |
| 2018 | 48 | 37 |
| 2019 | 32 | 23 |
| 2020 | 22 | 18 |
| 2021 | 19 | 14 |
| 2022 | 12 | 12 |
| 2023 | 11 | 10 |
| 2024 | 9 | 6 |
| 2025 | 11 | 4 |
| 2026 | 2 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Radio apparatus for a vehicle and a control method thereof22 Sep 2026US 12,744,609 B2Hyundai Motor Company
- Receiver and transceiver30 Jun 2026US 12,671,509 B2Uniden Holdings Corporation
- Content caching services in satellite and satellite/IP content delivery systems11 Nov 2025US 12,468,432 B2Sirius XM Radio Inc.
- Wireless audio output device for outputting audio content, and method therefor14 Oct 2025US 12,445,218 B2LG Electronics Inc.
- Electronic device and control method thereof30 Sep 2025US 12,431,995 B2Samsung Electronics Co., Ltd.
- Augmented audio control1 Oct 2026US 2026/0303243 A1
- Multiband radio systems and methods with dual triplexers and single front-to-back end coaxial connector cable13 Aug 2026US 2026/0238367 A1GM Global Technology Operations LLC
- Audio clock adjustment for multi-channel audio data output in network based public address30 Jul 2026US 2026/0222095 A1Inter. M Corporation
- Digital Signal Quality Metric For AM HD Radio Signal23 Jul 2026US 2026/0213863 A1iBiquity Digital Corporation
- Vehicle radio apparatus and control method thereof16 Apr 2026US 2026/0106682 A1Hyundai Motor Company
Most cited
By later US patents
- Information distribution and processing system1,219US 7,508,789 B2Data Innovation LLC · 2009
- Information distribution and processing system1,212US 8,457,545 B2Online News Link LLC · 2013
- System for scheduling transmission of indexed and requested database tiers on demand at varying repetition rates613US 5,404,505 AFinisar Corporation · 1995
- Method and apparatus for transmitting, receiving and communicating digital data signals with corresponding program data signals which describe the digital data signals329US 5,239,540 AScientific-Atlanta, Inc. · 1993
- Mobile telephone for internet-applications270US 6,519,241 B1Nokia Mobile Phones Ltd. · 2003