H04L 45/00
Routing or path finding of packets in data switching networks
Official title: Routing or path finding of packets in data switching networks (routing or path finding in wireless networks H04W40/00)
H04L45/00 (Routing or path finding of packets in data switching networks) appears on 39,967 US grants and 42,458 published applications in this corpus.
Search patents in H04L- Granted patents
- 39,967
- Published applications
- 42,458
- Assignees
- 4,804
- Inventors
- 49,242
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 6 | 0 |
| 1988 | 8 | 0 |
| 1989 | 14 | 0 |
| 1990 | 17 | 0 |
| 1991 | 33 | 0 |
| 1992 | 34 | 0 |
| 1993 | 34 | 0 |
| 1994 | 56 | 0 |
| 1995 | 68 | 0 |
| 1996 | 92 | 0 |
| 1997 | 65 | 0 |
| 1998 | 116 | 0 |
| 1999 | 110 | 0 |
| 2000 | 174 | 0 |
| 2001 | 199 | 127 |
| 2002 | 241 | 625 |
| 2003 | 350 | 907 |
| 2004 | 454 | 842 |
| 2005 | 451 | 975 |
| 2006 | 687 | 1065 |
| 2007 | 592 | 1131 |
| 2008 | 824 | 1263 |
| 2009 | 952 | 1191 |
| 2010 | 1419 | 1274 |
| 2011 | 1427 | 1349 |
| 2012 | 1298 | 1520 |
| 2013 | 1427 | 1825 |
| 2014 | 1944 | 2283 |
| 2015 | 2208 | 2633 |
| 2016 | 2437 | 2749 |
| 2017 | 2523 | 2503 |
| 2018 | 2498 | 2285 |
| 2019 | 2707 | 2330 |
| 2020 | 2721 | 2484 |
| 2021 | 2412 | 2337 |
| 2022 | 2302 | 2230 |
| 2023 | 2208 | 2119 |
| 2024 | 2033 | 1833 |
| 2025 | 1723 | 1521 |
| 2026 | 1092 | 1057 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04L 45/02Topology update or discovery10,507
- H04L 45/74Address processing for routing9,616
- H04L 45/24Multipath5,281
- H04L 45/12Shortest path evaluation5,231
- H04L 45/28Routing or path finding of packets in data switching networks: using route4,685
- H04L 45/22Alternate routing4,048
- H04L 45/302Route determination based on requested qos3,962
- H04L 45/50Routing or path finding of packets in data switching networks: using label3,783
All 38 subgroupsShow fewer
- H04L 45/64Routing or path finding of packets in data switching networks: using an2,945
- H04L 45/16Multipoint routing2,723
- H04L 45/58Association of routers2,547
- H04L 45/38Flow based routing2,519
- H04L 45/42Centralised routing2,108
- H04L 45/54Organization of routing tables1,748
- H04L 45/66Layer 2 routing1,745
- H04L 45/48Routing tree calculation1,580
- H04L 45/70Routing based on monitoring results1,251
- H04L 45/56Routing software1,125
- H04L 45/34Source routing1,121
- H04L 45/60Router architectures1,104
- H04L 45/26Route discovery packet1,045
- H04L 45/20Hop count for routing purposes1,035
- H04L 45/44Distributed routing847
- H04L 45/72Routing based on the source address774
- H04L 45/18Loop-free operations697
- H04L 45/46Cluster building591
- H04L 45/14Routing performance515
- H04L 45/76Routing in software-defined topologies514
- H04L 45/30Routing of multiclass traffic483
- H04L 45/52Multiprotocol routers467
- H04L 45/62Wavelength based393
- H04L 45/32Flooding364
- H04L 45/68Pseudowire emulation238
- H04L 45/645Splitting route computation layer and forwarding layer233
- H04L 45/80Ingress point selection by the source endpoint149
- H04L 45/36Backward learning148
- H04L 45/40Wormhole routing111
- H04L 45/17Shortcut routing35
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Most cited
By later US patents
- Camouflage of network traffic to resist attack1,574US 7,171,493 B2The Charles Stark Draper Laboratory, Inc. · 2007
- Method and apparatus for virtual switching805US 5,550,816 AStorage Technology Corporation · 1996
- Using virtual networking devices and routing information to initiate external actions765US 8,224,971 B1Amazon Technologies, Inc. · 2012
- Association management in a wireless node network755US 8,989,053 B1Fedex Corporate Services, Inc. · 2015
- Method and apparatus for making a cluster of computers appear as a single host on a network741US 5,371,852 AInternational Business Machines Corporation · 1994