H04L 1/22
Arrangements for detecting or preventing errors in the information received: using redundant
Official title: using redundant apparatus to increase reliability
H04L1/22 (Arrangements for detecting or preventing errors in the information received: using redundant) appears on 1,138 US grants and 980 published applications in this corpus.
Search patents in H04L- Granted patents
- 1,138
- Published applications
- 980
- Assignees
- 502
- Inventors
- 2,540
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 2 | 0 |
| 1984 | 6 | 0 |
| 1985 | 1 | 0 |
| 1986 | 6 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 11 | 0 |
| 1990 | 6 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 7 | 0 |
| 1994 | 8 | 0 |
| 1995 | 21 | 0 |
| 1996 | 27 | 0 |
| 1997 | 20 | 0 |
| 1998 | 21 | 0 |
| 1999 | 20 | 0 |
| 2000 | 21 | 0 |
| 2001 | 22 | 8 |
| 2002 | 26 | 36 |
| 2003 | 29 | 79 |
| 2004 | 29 | 60 |
| 2005 | 49 | 39 |
| 2006 | 43 | 50 |
| 2007 | 36 | 30 |
| 2008 | 30 | 41 |
| 2009 | 37 | 28 |
| 2010 | 42 | 37 |
| 2011 | 42 | 27 |
| 2012 | 38 | 37 |
| 2013 | 52 | 35 |
| 2014 | 48 | 40 |
| 2015 | 45 | 34 |
| 2016 | 39 | 40 |
| 2017 | 26 | 25 |
| 2018 | 31 | 30 |
| 2019 | 32 | 28 |
| 2020 | 30 | 61 |
| 2021 | 28 | 51 |
| 2022 | 45 | 42 |
| 2023 | 44 | 48 |
| 2024 | 42 | 31 |
| 2025 | 33 | 29 |
| 2026 | 17 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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- Improved radio access network (ran) redundancy28 May 2026US 2026/0149536 A1Telefonaktiebolaget LM Ericsson (publ)
Most cited
By later US patents
- Method and system for managing data traffic in wireless networks455US 7,042,988 B2Bluesocket, Inc. · 2006
- Audio/video signal redistribution system376US 6,038,425 A2000
- System and method for transmitting a plurality of digital services including imaging services310US 5,757,416 AScientific-Atlanta, Inc. · 1998
- System for distributing video/audio files from central location to a plurality of cable headends250US 5,594,490 ACable Services Technologies, Inc. · 1997
- Systems and methods for transmission of uninterrupted radio, television programs and additional data services through wireless networks246US 9,030,987 B2Fosco Bianchetti · 2015