H04B 1/74
Details of transmission systems, not covered by a single one of groups
Official title: for increasing reliability, e.g. using redundant or spare channels or apparatus {(replacing by standby devices for amplifiers H03F1/52, H03F1/542)}
H04B1/74 (Details of transmission systems, not covered by a single one of groups) appears on 428 US grants and 260 published applications in this corpus.
Search patents in H04B- Granted patents
- 428
- Published applications
- 260
- Assignees
- 222
- Inventors
- 885
- Latest grant
- 28 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 7 | 0 |
| 1977 | 7 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 9 | 0 |
| 1981 | 3 | 0 |
| 1982 | 5 | 0 |
| 1983 | 6 | 0 |
| 1984 | 6 | 0 |
| 1985 | 8 | 0 |
| 1986 | 7 | 0 |
| 1987 | 9 | 0 |
| 1988 | 4 | 0 |
| 1989 | 5 | 0 |
| 1990 | 10 | 0 |
| 1991 | 6 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 6 | 0 |
| 1995 | 14 | 0 |
| 1996 | 8 | 0 |
| 1997 | 15 | 0 |
| 1998 | 12 | 0 |
| 1999 | 11 | 0 |
| 2000 | 7 | 0 |
| 2001 | 10 | 2 |
| 2002 | 12 | 15 |
| 2003 | 11 | 17 |
| 2004 | 11 | 12 |
| 2005 | 13 | 5 |
| 2006 | 8 | 3 |
| 2007 | 9 | 5 |
| 2008 | 4 | 13 |
| 2009 | 5 | 7 |
| 2010 | 5 | 13 |
| 2011 | 6 | 9 |
| 2012 | 12 | 13 |
| 2013 | 8 | 12 |
| 2014 | 19 | 19 |
| 2015 | 18 | 13 |
| 2016 | 12 | 11 |
| 2017 | 10 | 8 |
| 2018 | 9 | 11 |
| 2019 | 12 | 8 |
| 2020 | 9 | 12 |
| 2021 | 10 | 10 |
| 2022 | 7 | 18 |
| 2023 | 9 | 10 |
| 2024 | 12 | 6 |
| 2025 | 6 | 6 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method and apparatus for routing data in a communication system28 Apr 2026US 12,615,571 B2Lenovo (Beijing) Limited
- Circuit redundancy and wear balancing to improve circuit lifetime7 Apr 2026US 12,597,961 B2Intel Corporation
- Data channel monitoring and selection26 Aug 2025US 12,401,392 B2Connectify, Inc.
- Method and apparatus for service continuity across LF and mmWave29 Jul 2025US 12,375,124 B2Futurewei Technologies, Inc.
- Method for performing beam management by UE in wireless communication system, and UE and base station supporting same20 May 2025US 12,309,820 B2LG Electronics Inc.
- Communication Device, Article of Personal Protective Equipment and Method of Communication4 Jun 2026US 2026/0155859 A13M Innovative Properties Company
- Improved radio access network (ran) redundancy28 May 2026US 2026/0149536 A1Telefonaktiebolaget LM Ericsson (publ)
- Performing channel selections to optimize data transmission20 Nov 2025US 2025/0357966 A1Connectify, Inc.
- Communication system and communication method4 Sep 2025US 2025/0279911 A1Denso Corporation
- Channel access in unlicensed spectrum15 May 2025US 2025/0158655 A1InterDigital Patent Holdings, Inc.
Most cited
By later US patents
- Method and apparatus for transparently providing a failover network device280US 6,108,300 ACisco Technology, Inc. · 2000
- System and method for virtual circuit backup in a communication network270US 6,311,288 B1Paradyne Corporation · 2001
- Wi-Fi/BPL dual mode repeaters for power line networks246US 7,852,837 B1AT&T Intellectual Property II, L. P. · 2010
- Mobile tele-computer network for motion picture, television and tv advertising production238US 5,960,074 A1999
- Mobile tele-computer network232US 6,445,777 B1NeTune Communications, Inc. · 2002