H04L 45/62
Wavelength based
Official title: {Wavelength based (optical switching H04Q11/0062)}
H04L45/62 (Wavelength based) appears on 393 US grants and 429 published applications in this corpus.
Search patents in H04L- Granted patents
- 393
- Published applications
- 429
- Assignees
- 112
- Inventors
- 752
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2000 | 3 | 0 |
| 2001 | 0 | 2 |
| 2002 | 1 | 24 |
| 2003 | 3 | 23 |
| 2004 | 2 | 23 |
| 2005 | 5 | 13 |
| 2006 | 20 | 15 |
| 2007 | 18 | 13 |
| 2008 | 17 | 26 |
| 2009 | 16 | 16 |
| 2010 | 29 | 22 |
| 2011 | 17 | 19 |
| 2012 | 19 | 32 |
| 2013 | 23 | 30 |
| 2014 | 30 | 26 |
| 2015 | 38 | 32 |
| 2016 | 37 | 26 |
| 2017 | 31 | 24 |
| 2018 | 21 | 15 |
| 2019 | 19 | 11 |
| 2020 | 14 | 6 |
| 2021 | 6 | 6 |
| 2022 | 6 | 6 |
| 2023 | 7 | 7 |
| 2024 | 2 | 4 |
| 2025 | 4 | 5 |
| 2026 | 5 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Route calculation method, device, and system9 Jun 2026US 12,652,601 B2Huawei Technologies Co., Ltd.
- LAG 1+1 handoff between packet and OTN5 May 2026US 12,621,236 B2Ciena Corporation
- Fast and reliable inter-network element optical protection switching5 May 2026US 12,621,237 B2Infinera Corporation
- Optical path design apparatus, optical path design method and program10 Feb 2026US 12,550,037 B2NTT, Inc.
- Preplan assignment generation13 Jan 2026US 12,526,196 B2ECI Telecom Ltd.
- Optical path design device, optical path design method, and optical path design program8 Oct 2026US 2026/0312904 A1NTT, Inc.
- Preplan assignment generation16 Jul 2026US 2026/0205364 A1ECI Telecom Ltd.
- Sparse Route Computation for Determining Optical Paths with Defined Optical Regenerator Locations16 Apr 2026US 2026/0106821 A1Ciena Corporation
- Communication method and apparatus21 Aug 2025US 2025/0267380 A1Huawei Technologies Co., Ltd.
- LAG 1+1 Handoff between packet and OTN1 May 2025US 2025/0141785 A1Ciena Corporation
Most cited
By later US patents
- Non-blocking, scalable optical router architecture and method for routing optical traffic169US 6,665,495 B1Yotta Networks, LLC · 2003
- Method and apparatus for designing backup communication path, and computer product164US 7,852,752 B2Fujitsu Limited · 2010
- Systems and methods for managing multi-layer communication networks158US 11,469,992 B2Sedonasys Systems Ltd · 2022
- MPLS application to optical cross-connect using wavelength as a label114US 7,031,607 B1Nortel Networks Limited · 2006
- Method for path selection in a network99US 7,002,917 B1Cisco Technology, Inc. · 2006