H04L 49/201
Multicast operation
Official title: Multicast operation; Broadcast operation
H04L49/201 (Multicast operation) appears on 1,347 US grants and 894 published applications in this corpus.
Search patents in H04L- Granted patents
- 1,347
- Published applications
- 894
- Assignees
- 394
- Inventors
- 2,222
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 7 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 8 | 0 |
| 1994 | 15 | 0 |
| 1995 | 21 | 0 |
| 1996 | 36 | 0 |
| 1997 | 31 | 0 |
| 1998 | 44 | 0 |
| 1999 | 59 | 0 |
| 2000 | 61 | 0 |
| 2001 | 68 | 18 |
| 2002 | 44 | 61 |
| 2003 | 50 | 65 |
| 2004 | 43 | 38 |
| 2005 | 36 | 43 |
| 2006 | 61 | 47 |
| 2007 | 41 | 34 |
| 2008 | 38 | 26 |
| 2009 | 39 | 24 |
| 2010 | 49 | 27 |
| 2011 | 44 | 31 |
| 2012 | 26 | 20 |
| 2013 | 40 | 36 |
| 2014 | 48 | 48 |
| 2015 | 42 | 37 |
| 2016 | 39 | 42 |
| 2017 | 52 | 51 |
| 2018 | 38 | 37 |
| 2019 | 61 | 41 |
| 2020 | 53 | 56 |
| 2021 | 47 | 35 |
| 2022 | 34 | 19 |
| 2023 | 25 | 12 |
| 2024 | 13 | 7 |
| 2025 | 16 | 13 |
| 2026 | 2 | 26 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Wireless proximity facilitated mobile transactions12 May 2026US 12,626,240 B2Paypal, Inc.
- Secured network switch and method for broadcast, multicast, and neighbor management5 May 2026US 12,621,264 B2SiliconDust USA Inc.
- Systems and methods for brokering device communications within distributed publisher-subscriber networks7 Oct 2025US 12,438,828 B2GM Global Technology Operations LLC
- Programmable multicast routes on a virtual gateway switch12 Aug 2025US 12,388,747 B2Hewlett Packard Enterprise Development LP
- Direct memory access (DMA) engine with network interface capabilities5 Aug 2025US 12,381,751 B2Intel Corporation
- Virtual Partition Lifecycle Management with Collective Operation Resource Allocation in a UALink Network27 Aug 2026US 2026/0252405 A1UnifabriX Ltd.
- Switch-Offloaded Block Collective Operations with Autonomous Memory Access in a UALink Network27 Aug 2026US 2026/0252419 A1UnifabriX Ltd.
- Collective Operation Resilience for Chiplet-Based UALink Networks27 Aug 2026US 2026/0252512 A1UnifabriX Ltd.
- Compressed Transaction Layer Encoding for Collective Operations in UALink Networks27 Aug 2026US 2026/0252517 A1UnifabriX Ltd.
- Encrypted Integrity Verification with Zero-Bandwidth Plaintext CRC for UALink Crypto Engines27 Aug 2026US 2026/0254612 A1UnifabriX Ltd.
Most cited
By later US patents
- Distributed memory switching hub1,538US 6,175,571 B1Network Peripherals, Inc. · 2001
- Distributed connection-oriented services for switched communications networks673US 5,825,772 ACabletron Systems, Inc. · 1998
- Network having secure fast packet switching and guaranteed quality of service466US 5,485,455 ACabletron Systems, Inc. · 1996
- Computer network switching system425US 5,274,631 AKalpana, Inc. · 1993
- Method for determining a best path between two nodes398US 5,521,910 ACabletron Systems, Inc. · 1996