H04L 69/324
In the data link layer [osi layer 2]
Official title: in the data link layer [OSI layer 2], e.g. HDLC
H04L69/324 (In the data link layer [osi layer 2]) appears on 2,883 US grants and 2,865 published applications in this corpus.
Search patents in H04L- Granted patents
- 2,883
- Published applications
- 2,865
- Assignees
- 765
- Inventors
- 5,088
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 4 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 7 | 0 |
| 1992 | 7 | 0 |
| 1993 | 8 | 0 |
| 1994 | 9 | 0 |
| 1995 | 15 | 0 |
| 1996 | 23 | 0 |
| 1997 | 17 | 0 |
| 1998 | 31 | 0 |
| 1999 | 48 | 0 |
| 2000 | 40 | 0 |
| 2001 | 53 | 15 |
| 2002 | 50 | 76 |
| 2003 | 44 | 104 |
| 2004 | 70 | 76 |
| 2005 | 59 | 78 |
| 2006 | 71 | 69 |
| 2007 | 58 | 88 |
| 2008 | 67 | 84 |
| 2009 | 71 | 85 |
| 2010 | 80 | 83 |
| 2011 | 94 | 69 |
| 2012 | 68 | 73 |
| 2013 | 103 | 94 |
| 2014 | 95 | 99 |
| 2015 | 93 | 116 |
| 2016 | 137 | 165 |
| 2017 | 135 | 235 |
| 2018 | 152 | 215 |
| 2019 | 221 | 189 |
| 2020 | 209 | 225 |
| 2021 | 180 | 176 |
| 2022 | 181 | 138 |
| 2023 | 159 | 108 |
| 2024 | 99 | 85 |
| 2025 | 78 | 61 |
| 2026 | 40 | 59 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Fronthaul message processing based on type of transport layer, fronthaul interface, communication device and computer-readable storage medium6 Oct 2026US 12,756,514 B2Sanechips Technology Co., Ltd.
- Two-way data communication over dual single-pair ethernet links29 Sep 2026US 12,750,254 B2Safran Electronics & Defense
- Transmitter, receiver, transmission method, and reception method22 Sep 2026US 12,744,700 B2Sun Patent Trust
- Network device and error handling15 Sep 2026US 12,739,411 B2Dolby Video Compression, LLC
- Layer-2 networking span port in a virtualized cloud environment25 Aug 2026US 12,719,786 B2Oracle International Corporation
- Byte queue parsing in high-performance network messaging architecture17 Sep 2026US 2026/0277877 A1Charles Schwab & Co., Inc.
- Code block transmission method and apparatus, device, system, and chip17 Sep 2026US 2026/0280759 A1
- Methods and apparatus to perform data encapsulation over serial links10 Sep 2026US 2026/0270109 A1
- Virtual Partition Lifecycle Management with Collective Operation Resource Allocation in a UALink Network27 Aug 2026US 2026/0252405 A1UnifabriX Ltd.
- Switch-Offloaded Block Collective Operations with Autonomous Memory Access in a UALink Network27 Aug 2026US 2026/0252419 A1UnifabriX Ltd.
Most cited
By later US patents
- Globally distributed utility computing cloud724US 8,429,630 B2CA, Inc. · 2013
- Vehicle computer system513US 5,794,164 AMicrosoft Corporation · 1998
- Radio frequency local area network481US 5,295,154 ANorand Corporation · 1994
- Vehicle computer system with wireless internet connectivity469US 6,202,008 B1Microsoft Corporation · 2001
- Apparatus and method for segmentation and time synchronization of the transmission of multimedia data435US 5,533,021 AInternational Business Machines Corporation · 1996