H04J 14/022
For interconnection of wdm optical networks
Official title: {For interconnection of WDM optical networks}
H04J14/022 (For interconnection of wdm optical networks) appears on 143 US grants and 160 published applications in this corpus.
Search patents in H04J- Granted patents
- 143
- Published applications
- 160
- Assignees
- 68
- Inventors
- 264
- Latest grant
- 21 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2000 | 2 | 0 |
| 2001 | 4 | 3 |
| 2002 | 3 | 13 |
| 2003 | 4 | 5 |
| 2004 | 4 | 8 |
| 2005 | 2 | 7 |
| 2006 | 6 | 7 |
| 2007 | 1 | 3 |
| 2008 | 6 | 6 |
| 2009 | 7 | 4 |
| 2010 | 8 | 5 |
| 2011 | 3 | 7 |
| 2012 | 5 | 9 |
| 2013 | 5 | 6 |
| 2014 | 6 | 1 |
| 2015 | 9 | 6 |
| 2016 | 4 | 7 |
| 2017 | 6 | 5 |
| 2018 | 5 | 11 |
| 2019 | 11 | 8 |
| 2020 | 10 | 7 |
| 2021 | 11 | 10 |
| 2022 | 8 | 5 |
| 2023 | 6 | 4 |
| 2024 | 3 | 6 |
| 2025 | 2 | 3 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Optical-layer module, access site, and optical signal processing method19 Feb 2026US 2026/0051964 A1
- Communication device and optical communication network22 Jan 2026US 2026/0025221 A1Huawei Technologies Co., Ltd.
- Optical Switch, and Method of Configuring an Optical Switch15 Jan 2026US 2026/0019186 A1
- High-degree reconfigurable add-drop multiplexer4 Dec 2025US 2025/0373355 A1Huawei Technologies Co., Ltd.
Most cited
By later US patents
- Modular all-optical cross-connect126US 6,614,953 B2Photuris, Inc. · 2003
- Method and apparatus for operation, protection, and restoration of heterogeneous optical communication networks80US 6,046,833 AOptical Networks, Inc. · 2000
- Integrated optical router55US 6,768,827 B2The Regents of the University of California · 2004
- Hybrid wavelength-interchanging cross-connect54US 6,333,799 B1Tellium, Inc. · 2001
- Method and apparatus for operation, protection and restoration of heterogeneous optical communication networks45US 6,331,906 B1ONI Systems Corp. · 2001