H04L 49/1569
Clos switching fabrics
Official title: {Clos switching fabrics}
H04L49/1569 (Clos switching fabrics) appears on 89 US grants and 68 published applications in this corpus.
Search patents in H04L- Granted patents
- 89
- Published applications
- 68
- Assignees
- 38
- Inventors
- 187
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 1 | 0 |
| 2000 | 2 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 3 |
| 2003 | 1 | 1 |
| 2004 | 0 | 1 |
| 2005 | 1 | 0 |
| 2006 | 2 | 1 |
| 2007 | 1 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 2 | 2 |
| 2012 | 2 | 1 |
| 2013 | 1 | 2 |
| 2014 | 0 | 2 |
| 2015 | 4 | 3 |
| 2016 | 6 | 3 |
| 2017 | 4 | 1 |
| 2018 | 3 | 3 |
| 2019 | 7 | 3 |
| 2020 | 5 | 14 |
| 2021 | 11 | 6 |
| 2022 | 13 | 9 |
| 2023 | 3 | 4 |
| 2024 | 6 | 3 |
| 2025 | 3 | 2 |
| 2026 | 6 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Communication method and apparatus4 Aug 2026US 12,701,081 B2New H3C Technologies Co., Ltd.
- Load balancing method, apparatus, and system2 Jun 2026US 12,647,364 B2Huawei Technologies Co., Ltd.
- Physical network orchestration for data centers12 May 2026US 12,627,557 B2Cisco Technology, Inc.
- PFC storm detection and processing method10 Mar 2026US 12,574,335 B2Huawei Technologies Co., Ltd.
- Scalability in multi-tier network fabrics1 Oct 2026US 2026/0303547 A1Oracle International Corporation
- System and method for a single logical ip subnet across multiple independent layer 2 (l2) subnets in a high performance computing environment25 Jun 2026US 2026/0180866 A1Oracle International Corporation
- Communication method and apparatus16 Oct 2025US 2025/0323867 A1New H3C Technologies Co., Ltd.
- Single field for encoding multiple elements23 Jan 2025US 2025/0030635 A1Micron Technology, Inc.
- Pfc storm detection and processing method14 Mar 2024US 2024/0089213 A1Huawei Technologies Co., Ltd.
Most cited
By later US patents
- Switching fabric123US 6,157,643 ANokia Telecommunications Oy · 2000
- Scheduling the dispatch of cells in multistage switches92US 7,173,931 B22007
- Method and system for multicast routing in an ATM network68US 5,291,477 ABell Communications Research, Inc. · 1994
- Switching network and switching-network module for an ATM system65US 5,091,903 AAlcatel · 1992
- Switching system and method of construction thereof62US 4,910,731 AHitachi, Ltd. · 1990