H04J 14/0271
Impairment aware routing
Official title: {Impairment aware routing}
H04J14/0271 (Impairment aware routing) appears on 186 US grants and 206 published applications in this corpus.
Search patents in H04J- Granted patents
- 186
- Published applications
- 206
- Assignees
- 60
- Inventors
- 373
- Latest grant
- 21 Apr 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2008 | 0 | 1 |
| 2009 | 1 | 2 |
| 2010 | 0 | 10 |
| 2011 | 0 | 14 |
| 2012 | 3 | 18 |
| 2013 | 15 | 10 |
| 2014 | 18 | 12 |
| 2015 | 13 | 22 |
| 2016 | 21 | 14 |
| 2017 | 13 | 10 |
| 2018 | 14 | 8 |
| 2019 | 14 | 20 |
| 2020 | 17 | 9 |
| 2021 | 15 | 15 |
| 2022 | 12 | 10 |
| 2023 | 14 | 17 |
| 2024 | 5 | 7 |
| 2025 | 8 | 6 |
| 2026 | 3 | 1 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- System and method for providing transient resilient transmissions in an optical network21 Apr 2026US 12,609,767 B2Xieon Networks S.a.r.l.
- Optical path route design device and optical path route design method17 Mar 2026US 12,581,223 B2NTT, Inc.
- Connection management method for high degree optical cross-connect cluster node3 Mar 2026US 12,568,543 B2Huawei Technologies Co., Ltd.
- Optical path design apparatus, optical path design method and program9 Dec 2025US 12,494,859 B2NTT, Inc.
- Communication path finding device, communication path finding method, and program14 Oct 2025US 12,445,371 B2NTT, Inc.
- Dynamic Programming Using a Shortest-Path Solution on a Directed Acyclic Graph for Channel Planning with Select Transmission Modes in an Optical Link25 Jun 2026US 2026/0181290 A1Ciena Corporation
- Optical path design apparatus, optical path design method and program13 Nov 2025US 2025/0350393 A1Nippon Telegraph and Telephone Corporation
- Managing network congestion using an optical link30 Oct 2025US 2025/0338047 A1Dell Products L. P.
- Dwdm path outage prediction and alternative path recommendation16 Oct 2025US 2025/0323720 A1AT&T Communications Services India Private Limited
- Code error rate estimation apparatus and code error rate estimation method9 Oct 2025US 2025/0317200 A1Nippon Telegraph and Telephone Corporation
Most cited
By later US patents
- Wavelength division multiplexed optical communication system architectures65US 8,655,190 B2Infinera Corporation · 2014
- Dynamic performance monitoring systems and methods for optical networks42US 8,433,192 B2Ciena Corporation · 2013
- Path computation systems and methods in optical networks37US 8,682,160 B2Ciena Corporation · 2014
- Systems and methods modeling optical sources in optical spectrum controllers for control thereof27US 9,986,317 B1Ciena Corporation · 2018
- Systems and methods for managing excess optical capacity and margin in optical networks25US 9,258,190 B2Ciena Corporation · 2016