H04Q 2011/0075
Wavelength grouping or hierarchical aspects
Official title: {Wavelength grouping or hierarchical aspects}
H04Q2011/0075 (Wavelength grouping or hierarchical aspects) appears on 158 US grants and 150 published applications in this corpus.
Search patents in H04Q- Granted patents
- 158
- Published applications
- 150
- Assignees
- 82
- Inventors
- 357
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1998 | 5 | 0 |
| 1999 | 2 | 0 |
| 2000 | 4 | 0 |
| 2001 | 4 | 2 |
| 2002 | 4 | 29 |
| 2003 | 9 | 26 |
| 2004 | 13 | 14 |
| 2005 | 8 | 9 |
| 2006 | 22 | 9 |
| 2007 | 17 | 4 |
| 2008 | 10 | 5 |
| 2009 | 4 | 6 |
| 2010 | 8 | 4 |
| 2011 | 3 | 4 |
| 2012 | 3 | 1 |
| 2013 | 4 | 3 |
| 2014 | 4 | 3 |
| 2015 | 6 | 2 |
| 2016 | 1 | 1 |
| 2017 | 2 | 2 |
| 2018 | 1 | 4 |
| 2019 | 7 | 4 |
| 2020 | 2 | 2 |
| 2021 | 3 | 3 |
| 2022 | 3 | 2 |
| 2023 | 1 | 4 |
| 2024 | 4 | 4 |
| 2025 | 1 | 2 |
| 2026 | 3 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Apparatus and method for two-way delay error compensation in communication system29 Sep 2026US 12,750,149 B2Electronics and Telecommunications Research Institute
- Communication route allocation device, communication route allocation method, and program23 Jun 2026US 12,665,671 B2NTT, Inc.
- Reconfigurable mesh interconnect for hybrid electrical-optical connectivity between regional data centers23 Jun 2026US 12,666,181 B2Ciena Corporation
- Service protection method and network node26 Aug 2025US 12,401,930 B2Huawei Technologies Co., Ltd.
- Systems and methods for preventing service interruption when troubleshooting a passive optical network10 Sep 2024US 12,088,977 B2Verizon Patent and Licensing Inc.
- Dynamic bandwidth allocation method that combines flow monitoring and status reporting and related optical line terminal13 Aug 2026US 2026/0238903 A1Airoha Technology (Suzhou) Limited
- Carrier Allocation Method and Apparatus in Optical Communication Network14 Aug 2025US 2025/0260914 A1Huawei Technologies Co., Ltd.
- Reconfigurable mesh interconnect for hybrid electrical-optical connectivity between regional data centers10 Apr 2025US 2025/0119670 A1Ciena Corporation
- Apparatus and method for two-way delay error compensation in communication system26 Sep 2024US 2024/0322928 A1Electronics and Telecommunications Research Institute
- Communication route allocation device, communication route allocation method, and program11 Jul 2024US 2024/0235683 A1Nippon Telegraph and Telephone Corporation
Most cited
By later US patents
- Method and apparatus for capacity-efficient restoration in an optical communication system88US 6,587,235 B1AT&T Corp. · 2003
- Wavelength division multiplexing (WDM) with multi-frequency lasers and optical couplers87US 6,826,368 B1Lucent Technologies Inc. · 2004
- Optical branching apparatus and transmission line setting method therefor79US 5,822,474 ANEC Corporation · 1998
- Optical fiber ring communication system69US 7,035,540 B2Ciena Corporation · 2006
- Fiber to the home office (FTTHO) architecture employing multiple wavelength bands as an overlay in an existing hybrid fiber coax (HFC) transmission system62US 6,385,366 B1Jedai Broadband Networks Inc. · 2002