H04L 45/488
Using root node determination
Official title: using root node determination
H04L45/488 (Using root node determination) appears on 161 US grants and 145 published applications in this corpus.
Search patents in H04L- Granted patents
- 161
- Published applications
- 145
- Assignees
- 77
- Inventors
- 301
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 4 | 2 |
| 2003 | 1 | 5 |
| 2004 | 2 | 4 |
| 2005 | 4 | 6 |
| 2006 | 0 | 6 |
| 2007 | 1 | 4 |
| 2008 | 7 | 6 |
| 2009 | 6 | 10 |
| 2010 | 9 | 4 |
| 2011 | 12 | 11 |
| 2012 | 4 | 4 |
| 2013 | 9 | 3 |
| 2014 | 6 | 9 |
| 2015 | 5 | 4 |
| 2016 | 9 | 6 |
| 2017 | 4 | 9 |
| 2018 | 11 | 10 |
| 2019 | 17 | 11 |
| 2020 | 6 | 6 |
| 2021 | 8 | 8 |
| 2022 | 8 | 8 |
| 2023 | 6 | 5 |
| 2024 | 7 | 2 |
| 2025 | 3 | 2 |
| 2026 | 2 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Protocol independent multicast (PIM) across transport network9 Jun 2026US 12,652,241 B2
- Apparatus and methods to perform lattice routing17 Feb 2026US 12,556,480 B2Cisco Technology, Inc.
- Interior gateway protocol flood minimization30 Dec 2025US 12,513,436 B2Huawei Technologies Co., Ltd.
- Deadlock-free multipath routing for direct interconnect networks9 Sep 2025US 12,413,503 B2Rockport Networks Inc.
- Load sharing method, root node device, leaf node device, and system17 Jun 2025US 12,335,151 B2Huawei Technologies Co., Ltd.
- Apparatus and methods to perform lattice routing11 Dec 2025US 2025/0379818 A1Cisco Technology, Inc.
- Protocol independent multicast (pim) across transport network2 Jan 2025US 2025/0007827 A1Juniper Networks, Inc.
- Optimal Encoding Multicast Tree using Link Number and Bit19 Dec 2024US 2024/0422092 A1Huawei Technologies Co., Ltd.
- Method and apparatus for packet matching, network device, and medium25 Apr 2024US 2024/0137317 A1New H3C Technologies Co., Ltd.
- Load sharing method, root node device, leaf node device, and system19 Oct 2023US 2023/0336484 A1Huawei Technologies Co., Ltd.
Most cited
By later US patents
- Radio frequency local area network481US 5,295,154 ANorand Corporation · 1994
- System for managing topology of a network in spanning tree data structure by maintaining link table and parent table in each network node302US 5,606,669 AInternational Business Machines Corporation · 1997
- Communication network having a plurality of bridging nodes which transmit a beacon to terminal nodes in power saving state that it has messages awaiting delivery287US 5,740,366 ANorand Corporation · 1998
- Radio frequency local area network275US 5,504,746 ANorand Corporation · 1996
- Communication network having a plurality of bridging nodes which transmit a beacon to terminal nodes in power saving state that it has messages awaiting delivery234US 6,374,311 B1Intermec IP Corp. · 2002