H04L 12/56
Packet switching systems
Official title: {Packet switching systems}
H04L12/56 (Packet switching systems) appears on 9,696 US grants and 4,892 published applications in this corpus.
Search patents in H04L- Granted patents
- 9,696
- Published applications
- 4,892
- Assignees
- 1,677
- Inventors
- 13,702
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 7 | 0 |
| 1983 | 4 | 0 |
| 1984 | 8 | 0 |
| 1985 | 9 | 0 |
| 1986 | 3 | 0 |
| 1987 | 12 | 0 |
| 1988 | 11 | 0 |
| 1989 | 29 | 0 |
| 1990 | 39 | 0 |
| 1991 | 44 | 0 |
| 1992 | 80 | 0 |
| 1993 | 115 | 0 |
| 1994 | 172 | 0 |
| 1995 | 241 | 0 |
| 1996 | 314 | 0 |
| 1997 | 295 | 0 |
| 1998 | 478 | 0 |
| 1999 | 561 | 0 |
| 2000 | 580 | 0 |
| 2001 | 565 | 209 |
| 2002 | 578 | 590 |
| 2003 | 610 | 512 |
| 2004 | 520 | 417 |
| 2005 | 410 | 372 |
| 2006 | 572 | 321 |
| 2007 | 340 | 229 |
| 2008 | 329 | 183 |
| 2009 | 310 | 192 |
| 2010 | 302 | 172 |
| 2011 | 218 | 172 |
| 2012 | 203 | 213 |
| 2013 | 192 | 183 |
| 2014 | 248 | 157 |
| 2015 | 220 | 140 |
| 2016 | 196 | 118 |
| 2017 | 142 | 128 |
| 2018 | 117 | 123 |
| 2019 | 133 | 103 |
| 2020 | 131 | 106 |
| 2021 | 99 | 80 |
| 2022 | 78 | 47 |
| 2023 | 75 | 56 |
| 2024 | 42 | 29 |
| 2025 | 35 | 24 |
| 2026 | 17 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Multi-level video processing within a vehicular communication network29 Sep 2026US 12,749,358 B2Avago Technologies International Sales Pte. Limited
- System and method for generating a unified network topology for incident detection and response22 Sep 2026US 12,744,794 B2BigPanda, Inc.
- Life cycle management of a receiver with an artificial intelligence receiver module15 Sep 2026US 12,739,068 B2Viavi Solutions Inc.
- Adaptive frame alignment8 Sep 2026US 12,732,397 B1Marvell Asia Pte Ltd
- Fault response models for data replication spanning different methodologies25 Aug 2026US 12,719,817 B2Everpure, Inc.
- Techniques for diminishing latency in a distributed antenna system10 Sep 2026US 2026/0269870 A1Outdoor Wireless Networks LLC
- Ethernet collision detection27 Aug 2026US 2026/0254675 A1Infineon Technologies AG
- Method and Devices of Communication in a Computing Network using Switch Proxy20 Aug 2026US 2026/0246664 A1Marvell Asia Pte Ltd
- System and Method for Registration and Resource Allocation in Distributed Networks Using Whisper Identifiers6 Aug 2026US 2026/0230510 A1Bank of America Corporation
- Systems and methods for managing sensor assignments in thermal management systems23 Jul 2026US 2026/0214863 A1Vertiv Corporation
Most cited
By later US patents
- Distributed memory switching hub1,538US 6,175,571 B1Network Peripherals, Inc. · 2001
- Method of supporting unknown addresses in an interface for data transmission in an asynchronous transfer mode1,030US 6,151,323 A3Com Technologies · 2000
- Multimedia channel formulation mechanism978US 5,699,361 AIndustrial Technology Research Institute · 1997
- Method and apparatus for automatically updating software components on end systems over a network926US 6,009,274 A3Com Corporation · 1999
- Multimedia bidirectional broadcast system878US 5,027,400 AHitachi, Ltd. · 1991