H04J 3/085
For ring networks
Official title: {for ring networks, e.g. SDH/SONET rings, self-healing rings, meashed SDH/SONET networks}
H04J3/085 (For ring networks) appears on 429 US grants and 242 published applications in this corpus.
Search patents in H04J- Granted patents
- 429
- Published applications
- 242
- Assignees
- 129
- Inventors
- 824
- Latest grant
- 7 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 6 | 0 |
| 1993 | 2 | 0 |
| 1994 | 12 | 0 |
| 1995 | 11 | 0 |
| 1996 | 15 | 0 |
| 1997 | 6 | 0 |
| 1998 | 24 | 0 |
| 1999 | 17 | 0 |
| 2000 | 18 | 0 |
| 2001 | 21 | 9 |
| 2002 | 18 | 25 |
| 2003 | 20 | 36 |
| 2004 | 20 | 25 |
| 2005 | 23 | 22 |
| 2006 | 29 | 19 |
| 2007 | 21 | 16 |
| 2008 | 26 | 18 |
| 2009 | 19 | 7 |
| 2010 | 21 | 13 |
| 2011 | 12 | 6 |
| 2012 | 18 | 12 |
| 2013 | 12 | 6 |
| 2014 | 12 | 3 |
| 2015 | 10 | 7 |
| 2016 | 9 | 4 |
| 2017 | 4 | 4 |
| 2018 | 2 | 3 |
| 2019 | 3 | 1 |
| 2020 | 2 | 2 |
| 2021 | 2 | 3 |
| 2022 | 0 | 0 |
| 2023 | 3 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Communication control device, communication method, communication system and communication program7 Jan 2025US 12,191,985 B2Nippon Telegraph and Telephone Corporation
- Communication method and apparatus31 Oct 2023US 11,804,982 B2Huawei Technologies Co., Ltd.
- Scalable traffic management using one or more processor cores for multiple levels of quality of service31 Oct 2023US 11,805,065 B2Intel Corporation
- Message arbitration in a ring interconnect system based on activity indications for each node in the ring interconnect3 Oct 2023US 11,777,869 B2Arm Limited
- Permutated ring network7 Dec 2021US 11,196,587 B2DeGirum Corporation
- Communication control device, communication method, communication system and communication program15 Jun 2023US 2023/0188240 A1Nippon Telegraph and Telephone Corporation
- Communication method and apparatus23 Sep 2021US 2021/0297285 A1Huawei Technologies Co., Ltd.
- Communication method and communications apparatus2 Sep 2021US 2021/0273826 A1Huawei Technologies Co., Ltd.
- Network device, network system, network method, and computer readable medium5 Aug 2021US 2021/0242953 A1Mitsubishi Electric Corporation
- Protection Switching Method and Node13 Aug 2020US 2020/0260163 A1Huawei Technologies Co., Ltd.
Most cited
By later US patents
- Ring network with temporary master node for collecting data from slave nodes during failure158US 5,461,608 ANEC Corporation · 1995
- Method and apparatus for self-restoring and self-provisioning communication networks154US 4,956,835 AAlberta Telecommunications Research Centre · 1990
- Data network having enhanced availability of extra traffic130US 6,795,394 B1Nortel Networks Limited · 2004
- Sonet ring subnetwork management method128US 5,412,652 ANEC Corporation Of America · 1995
- System for wavelength division multiplexing/asynchronous transfer mode switching for network communication127US 5,550,818 ABell Communications Research, Inc. · 1996