H04L 2012/421
Interconnected ring systems
Official title: {Interconnected ring systems}
H04L2012/421 (Interconnected ring systems) appears on 90 US grants and 112 published applications in this corpus.
Search patents in H04L- Granted patents
- 90
- Published applications
- 112
- Assignees
- 82
- Inventors
- 220
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2002 | 0 | 4 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 1 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 1 | 2 |
| 2009 | 1 | 3 |
| 2010 | 4 | 2 |
| 2011 | 0 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 2 |
| 2014 | 0 | 12 |
| 2015 | 4 | 11 |
| 2016 | 12 | 8 |
| 2017 | 10 | 7 |
| 2018 | 4 | 9 |
| 2019 | 7 | 9 |
| 2020 | 6 | 8 |
| 2021 | 13 | 11 |
| 2022 | 5 | 11 |
| 2023 | 8 | 6 |
| 2024 | 6 | 2 |
| 2025 | 5 | 3 |
| 2026 | 2 | 1 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Loop detecting and remediating system and method for a heterogeneous computing platform9 Jun 2026US 12,652,191 B2Dell Products L. P.
- Data transmission method and communication apparatus27 Jan 2026US 12,537,716 B2Huawei Technologies Co., Ltd.
- Ring network30 Sep 2025US 12,432,090 B2Kabushiki Kaisha Toshiba
- Automation system having a subscriber structure, distributor and method for telegram transmission27 May 2025US 12,316,474 B2Beckhoff Automation GmbH
- Automation network and method for transmitting data in an automation network15 Apr 2025US 12,276,957 B2Beckhoff Automation GmbH
- Distributed ring-based interconnect for register accessibility in a system-on-chip8 Jan 2026US 2026/0010495 A1QUALCOMM Incorporated
- Loop detecting and remediating system and method for a heterogeneous computing platform25 Sep 2025US 2025/0300855 A1Dell Products L. P.
- G.8032 with optical bypass10 Jul 2025US 2025/0227397 A1Ciena Corporation
- System for vehicle fault detection, and vehicle employing system17 Apr 2025US 2025/0121836 A1Futaijing Precision Electronics (Yantai) Co., Ltd.
- Method and system for obtaining link node data17 Oct 2024US 2024/0348474 A1Zhejiang Lab
Most cited
By later US patents
- Modular all-optical cross-connect126US 6,614,953 B2Photuris, Inc. · 2003
- Packet ring network system and packet transport method33US 7,826,400 B2NEC Corporation · 2010
- System and method for transmission of data in packet ring network system33US 7,848,340 B2NEC Corporation · 2010
- Communication network and protocol which can efficiently maintain transmission across a disrupted network18US 6,912,196 B1Dunti LLC · 2005
- Modular all-optical cross-connect10US 7,469,080 B2Meriton Networks US Inc. · 2008