H04J 14/0268
Restoration of optical paths
Official title: {Restoration of optical paths, e.g. p-cycles}
H04J14/0268 (Restoration of optical paths) appears on 152 US grants and 159 published applications in this corpus.
Search patents in H04J- Granted patents
- 152
- Published applications
- 159
- Assignees
- 68
- Inventors
- 304
- Latest grant
- 7 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 2 |
| 2004 | 1 | 2 |
| 2005 | 0 | 1 |
| 2006 | 1 | 2 |
| 2007 | 2 | 0 |
| 2008 | 1 | 0 |
| 2009 | 3 | 8 |
| 2010 | 4 | 13 |
| 2011 | 5 | 13 |
| 2012 | 12 | 24 |
| 2013 | 15 | 28 |
| 2014 | 18 | 7 |
| 2015 | 25 | 8 |
| 2016 | 14 | 11 |
| 2017 | 8 | 6 |
| 2018 | 7 | 4 |
| 2019 | 6 | 7 |
| 2020 | 7 | 6 |
| 2021 | 5 | 3 |
| 2022 | 5 | 8 |
| 2023 | 4 | 2 |
| 2024 | 2 | 2 |
| 2025 | 2 | 1 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Proactive path computation element to accelerate path computation7 Apr 2026US 12,597,996 B2Cisco Technology, Inc.
- Routing and regenerator planning in a carrier's core reconfigurable optical network3 Jun 2025US 12,323,231 B2AT&T Intellectual Property I, L. P.
- Identifying and monitoring connections in an optical system27 May 2025US 12,316,441 B2Molex Incorporated
- Resolving control conflicts among trunk protection links13 Feb 2024US 11,902,724 B2Ciena Corporation
- Identifying and monitoring connections in an optical system2 Jan 2024US 11,863,295 B2Molex Incorporated
- Optical path establishment method and related device27 Feb 2025US 2025/0070906 A1
- Proactive path computation element to accelerate path computation26 Dec 2024US 2024/0430004 A1Cisco Technology, Inc.
- Identifying and monitoring connections in an optical system11 Jan 2024US 2024/0014919 A1Molex Incorporated
- Resolving control conflicts among trunk protection links25 May 2023US 2023/0164468 A1Ciena Corporation
- Routing and Regenerator Planning in a Carrier's Core Reconfigurable Optical Network4 May 2023US 2023/0134574 A1AT&T Intellectual Property I, L. P.
Most cited
By later US patents
- Optical power management in an optical network72US 6,304,347 B1ONI Systems Corp. · 2001
- Method and apparatus for restoring a network64US 6,130,876 AAT&T Corp. · 2000
- System and method for providing destination-to-source protection switch setup in optical network topologies64US 7,274,869 B1Nokia Networks Oy · 2007
- Dynamic performance monitoring systems and methods for optical networks42US 8,433,192 B2Ciena Corporation · 2013
- Extending path computation element protocol to accommodate routing and wavelength assignment in wavelength switched optical networks40US 9,231,726 B2Futurewei Technologies, Inc. · 2016