H04L 45/026
Details of "hello" or keep-alive messages
Official title: {Details of "hello" or keep-alive messages}
H04L45/026 (Details of "hello" or keep-alive messages) appears on 404 US grants and 439 published applications in this corpus.
Search patents in H04L- Granted patents
- 404
- Published applications
- 439
- Assignees
- 156
- Inventors
- 887
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 4 | 11 |
| 2003 | 2 | 2 |
| 2004 | 2 | 3 |
| 2005 | 2 | 5 |
| 2006 | 4 | 6 |
| 2007 | 3 | 1 |
| 2008 | 7 | 5 |
| 2009 | 4 | 14 |
| 2010 | 14 | 17 |
| 2011 | 12 | 21 |
| 2012 | 14 | 14 |
| 2013 | 14 | 28 |
| 2014 | 27 | 31 |
| 2015 | 32 | 31 |
| 2016 | 26 | 49 |
| 2017 | 31 | 29 |
| 2018 | 25 | 17 |
| 2019 | 31 | 20 |
| 2020 | 31 | 44 |
| 2021 | 34 | 30 |
| 2022 | 25 | 15 |
| 2023 | 19 | 19 |
| 2024 | 19 | 14 |
| 2025 | 9 | 5 |
| 2026 | 12 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Communication method and apparatus29 Sep 2026US 12,750,308 B2New H3C Technologies Co., Ltd.
- Information flooding method and device18 Aug 2026US 12,712,807 B2Huawei Technologies Co., Ltd.
- Management network and method of operation11 Aug 2026US 12,706,837 B2Aviatrix Systems, Inc.
- PIM proxy over EVPN fabric11 Aug 2026US 12,706,856 B2Cisco Technology, Inc.
- Container routing algorithm using OSPF16 Jun 2026US 12,659,272 B2T-Mobile USA, Inc.
- Method and apparatus to reduce user overhead and optimize topology change handling during control plane restarts1 Oct 2026US 2026/0303509 A1Ciena Corporation
- Dynamic skills-based routing in a network of artificial intelligence agents via network routing protocols24 Sep 2026US 2026/0291847 A1Cisco Technology, Inc.
- Pim proxy over evpn fabric17 Sep 2026US 2026/0281049 A1Cisco Technology, Inc.
- Node configuration and self-healing for ad hoc networks10 Sep 2026US 2026/0270845 A1Texas Instruments Incorporated
- Fast Detection of a Node Failure in a Distributed Scheduled Fabric27 Aug 2026US 2026/0254748 A1Arista Networks, Inc.
Most cited
By later US patents
- Reliable transport protocol for internetwork routing361US 5,519,704 ACisco Systems, Inc. · 1996
- Dynamic keepalive parameters for reverse path validation in computer networks170US 8,862,774 B2Cisco Technology, Inc. · 2014
- Protocol and structure for self-organizing network125US 7,171,476 B2Motorola, Inc. · 2007
- Method and apparatus for establishing adjacency for a restarting router during convergence96US 7,466,661 B1Cisco Technology, Inc. · 2008
- System and method for intelligently maintaining connectivity in a network environment95US 8,792,384 B2Cisco Technology, Inc. · 2014