H04L 69/321
Interlayer communication protocols or service data unit [sdu] definitions
Official title: Interlayer communication protocols or service data unit [SDU] definitions; Interfaces between layers
H04L69/321 (Interlayer communication protocols or service data unit [sdu] definitions) appears on 947 US grants and 1,097 published applications in this corpus.
Search patents in H04L- Granted patents
- 947
- Published applications
- 1,097
- Assignees
- 359
- Inventors
- 2,137
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 4 | 8 |
| 2002 | 5 | 11 |
| 2003 | 2 | 12 |
| 2004 | 6 | 9 |
| 2005 | 7 | 20 |
| 2006 | 9 | 29 |
| 2007 | 17 | 16 |
| 2008 | 13 | 6 |
| 2009 | 9 | 22 |
| 2010 | 27 | 8 |
| 2011 | 15 | 17 |
| 2012 | 14 | 10 |
| 2013 | 23 | 44 |
| 2014 | 39 | 49 |
| 2015 | 34 | 81 |
| 2016 | 51 | 82 |
| 2017 | 70 | 56 |
| 2018 | 71 | 65 |
| 2019 | 71 | 96 |
| 2020 | 87 | 103 |
| 2021 | 74 | 82 |
| 2022 | 79 | 66 |
| 2023 | 60 | 62 |
| 2024 | 63 | 59 |
| 2025 | 57 | 47 |
| 2026 | 25 | 37 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Data unit processing method and apparatus, and communication device15 Sep 2026US 12,739,209 B2Datang Mobile Communications Equipment Co., Ltd.
- Support of quality of service for V2X transmissions11 Aug 2026US 12,706,855 B2Panasonic Intellectual Property Corporation of America
- End-to-end transactional microsegmentation11 Aug 2026US 12,706,991 B2Cisco Technology, Inc.
- Intelligent data flow control valve21 Jul 2026US 12,688,084 B2Oracle International Corporation
- System and method for neutral application programming interface23 Jun 2026US 12,665,888 B2UMBRA Technologies Ltd. (UK)
- Methods and apparatus for hosting real time layer and non-real time layer in a wireless communication system8 Oct 2026US 2026/0312915 A1Samsung Electronics Co., Ltd.
- System and method for neutral application programming interface8 Oct 2026US 2026/0313020 A1UMBRA Technologies Ltd.
- Method and apparatus for transmitting data unit without length field in wireless communication system1 Oct 2026US 2026/0303712 A1LG Electronics Inc.
- Method and apparatus for transmitting data in a wireless communication system1 Oct 2026US 2026/0304225 A1Samsung Electronics Co., Ltd.
- Information processing device, virtual service provision program, and communication method10 Sep 2026US 2026/0267674 A1connectFree Corporation
Most cited
By later US patents
- Identity brokering in a network element440US 8,266,327 B2Cisco Technology, Inc. · 2012
- Highly scalable architecture for application network appliances290US 7,921,686 B2Cisco Technology, Inc. · 2011
- User-configured on-demand virtual layer-2 network for infrastructure-as-a-service (IaaS) on a hybrid cloud network269US 9,154,327 B1Cisco Technology, Inc. · 2015
- Uniform interface for conducting communications in a heterogeneous computing network226US 5,787,237 AApple Computer, Inc. · 1998
- Routing across a virtual network213US 8,370,834 B2Hewlett-Packard Development Company, L. P. · 2013