H04J 14/0289
Optical multiplex section protection
Official title: {Optical multiplex section protection}
H04J14/0289 (Optical multiplex section protection) appears on 468 US grants and 416 published applications in this corpus.
Search patents in H04J- Granted patents
- 468
- Published applications
- 416
- Assignees
- 174
- Inventors
- 993
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 4 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 9 | 0 |
| 1999 | 11 | 0 |
| 2000 | 20 | 0 |
| 2001 | 12 | 7 |
| 2002 | 12 | 50 |
| 2003 | 24 | 40 |
| 2004 | 26 | 31 |
| 2005 | 27 | 38 |
| 2006 | 28 | 27 |
| 2007 | 30 | 25 |
| 2008 | 30 | 11 |
| 2009 | 24 | 20 |
| 2010 | 23 | 16 |
| 2011 | 18 | 13 |
| 2012 | 12 | 12 |
| 2013 | 14 | 7 |
| 2014 | 13 | 11 |
| 2015 | 10 | 12 |
| 2016 | 11 | 10 |
| 2017 | 13 | 6 |
| 2018 | 8 | 10 |
| 2019 | 13 | 18 |
| 2020 | 14 | 12 |
| 2021 | 12 | 17 |
| 2022 | 19 | 8 |
| 2023 | 6 | 6 |
| 2024 | 10 | 3 |
| 2025 | 2 | 4 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Proactive path computation element to accelerate path computation7 Apr 2026US 12,597,996 B2Cisco Technology, Inc.
- Optical path route design device and optical path route design method17 Mar 2026US 12,581,223 B2NTT, Inc.
- Quantum entanglement distribution using multiple optical paths and automated switchover10 Mar 2026US 12,574,122 B2Amazon Technologies, Inc.
- Data secrecy method for submarine cable system with failure and submarine cable system25 Nov 2025US 12,483,346 B2HMN Technologies Co., Limited
- Communication station, optical communication system, data transmission method, and storage medium20 May 2025US 12,308,948 B2Accelink Technologies Co., Ltd.
- Methods and apparatus for multiplexing and demultiplexing optical signals of protected optics17 Sep 2026US 2026/0280746 A1Molex Incorporated
- Quantum entanglement distribution using multiple optical paths and automated switchover18 Jun 2026US 2026/0172122 A1Amazon Technologies, Inc.
- Optical transmission device and related network25 Dec 2025US 2025/0392392 A1Huawei Technologies Co., Ltd.
- Device, method, apparatus and medium for optical channel protection7 Aug 2025US 2025/0253941 A1Nokia Solutions and Networks Oy
- Data Secrecy Method for Submarine Cable System with Failure and Submarine Cable System16 Jan 2025US 2025/0023654 A1HMN Technologies Co., Limited
Most cited
By later US patents
- Method and apparatus for multiplexing in a wireless communication infrastructure211US 6,826,163 B2NEXTG Networks · 2004
- Method and apparatus for multiplexing in a wireless communication infrastructure201US 6,826,164 B2NEXTG Networks · 2004
- WDM optical network with passive pass-through at each node146US 6,084,694 ANortel Networks Limited · 2000
- Optical cross-connect system with space and wavelength division switching stages for minimizing fault recovery procedures131US 5,457,556 ANEC Corporation · 1995
- Optical wavelength division multiplexed network system110US 5,717,795 AKabushiki Kaisha Toshiba · 1998