H04L 12/4641
Virtual lans, vlans
Official title: {Virtual LANs, VLANs, e.g. virtual private networks [VPN] (LAN interconnection over a bridge based backbone H04L12/462; encapsulation techniques H04L12/4633; routing of packets H04L45/00; packet switches H04L49/00; virtual private networks for security H04L63/0272)}
H04L12/4641 (Virtual lans, vlans) appears on 7,481 US grants and 7,842 published applications in this corpus.
Search patents in H04L- Granted patents
- 7,481
- Published applications
- 7,842
- Assignees
- 1,285
- Inventors
- 11,778
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 4 | 0 |
| 1998 | 8 | 0 |
| 1999 | 21 | 0 |
| 2000 | 48 | 0 |
| 2001 | 33 | 8 |
| 2002 | 37 | 88 |
| 2003 | 42 | 94 |
| 2004 | 63 | 172 |
| 2005 | 62 | 198 |
| 2006 | 89 | 200 |
| 2007 | 74 | 192 |
| 2008 | 127 | 227 |
| 2009 | 182 | 179 |
| 2010 | 291 | 229 |
| 2011 | 270 | 200 |
| 2012 | 199 | 230 |
| 2013 | 265 | 297 |
| 2014 | 316 | 325 |
| 2015 | 356 | 449 |
| 2016 | 408 | 450 |
| 2017 | 394 | 495 |
| 2018 | 429 | 479 |
| 2019 | 579 | 476 |
| 2020 | 543 | 550 |
| 2021 | 555 | 560 |
| 2022 | 559 | 521 |
| 2023 | 547 | 459 |
| 2024 | 467 | 349 |
| 2025 | 325 | 250 |
| 2026 | 186 | 165 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Method and electronic device for data transmission across multiple clouds, and computer-readable storage medium6 Oct 2026US 12,756,594 B2Cloud Intelligence Assets Holding (Singapore) Private Limited
- Enhancing interior gateway protocol functionalities for local and remote peering with virtual private network based fabric29 Sep 2026US 12,750,311 B2Cisco Technology, Inc.
- SPI differentiated thin pipes between endpoints with core balancing based on SPI selection29 Sep 2026US 12,750,315 B2Palo Alto Networks, Inc.
- Controller for coordinating flow separation of intra-VPC or inter-VPC communications29 Sep 2026US 12,750,338 B1Aviatrix Systems, Inc.
- Location specific communications gateway for multi-site enterprise22 Sep 2026US 12,744,747 B2Fisher-Rosemount Systems, Inc.
- Buffering packets to manage time delays in a bonded data connection8 Oct 2026US 2026/0312922 A1Connectify, Inc.
- Telecommunications method1 Oct 2026US 2026/0303408 A1Network Guard Pte. Ltd.
- Network switch and operation method thereof1 Oct 2026US 2026/0303409 A1Realtek Semiconductor Corp.
- Tunnel keepalive method, network device, system, and storage medium24 Sep 2026US 2026/0291778 A1Huawei Technologies Co., Ltd.
- Fast convergence via staggering evpn mac/ip withdrawals upon ethernet segment failure of a pe24 Sep 2026US 2026/0291861 A1Cisco Technology, Inc.
Most cited
By later US patents
- Using virtual networking devices and routing information to initiate external actions765US 8,224,971 B1Amazon Technologies, Inc. · 2012
- Virtual LAN system711US 6,085,238 AMatsushita Electric Works, Ltd. · 2000
- Distributed connection-oriented services for switched communications networks673US 5,825,772 ACabletron Systems, Inc. · 1998
- Multiple VLAN Architecture system526US 6,219,699 B1Cisco Technologies, Inc. · 2001
- Using virtual networking devices to manage external connections520US 7,937,438 B1Amazon Technologies, Inc. · 2011