H04B 10/294
In a multiwavelength system
Official title: in a multiwavelength system, e.g. gain equalisation
H04B10/294 (In a multiwavelength system) appears on 945 US grants and 751 published applications in this corpus.
Search patents in H04B- Granted patents
- 945
- Published applications
- 751
- Assignees
- 231
- Inventors
- 1,483
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 4 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 6 | 0 |
| 1996 | 8 | 0 |
| 1997 | 15 | 0 |
| 1998 | 18 | 0 |
| 1999 | 29 | 0 |
| 2000 | 53 | 0 |
| 2001 | 45 | 20 |
| 2002 | 94 | 70 |
| 2003 | 66 | 60 |
| 2004 | 47 | 68 |
| 2005 | 47 | 45 |
| 2006 | 61 | 38 |
| 2007 | 40 | 45 |
| 2008 | 31 | 29 |
| 2009 | 33 | 13 |
| 2010 | 22 | 19 |
| 2011 | 21 | 25 |
| 2012 | 16 | 24 |
| 2013 | 21 | 6 |
| 2014 | 20 | 12 |
| 2015 | 19 | 16 |
| 2016 | 15 | 14 |
| 2017 | 18 | 14 |
| 2018 | 15 | 19 |
| 2019 | 20 | 23 |
| 2020 | 18 | 27 |
| 2021 | 21 | 16 |
| 2022 | 24 | 36 |
| 2023 | 22 | 38 |
| 2024 | 25 | 29 |
| 2025 | 24 | 29 |
| 2026 | 25 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Multi-band coexistence element8 Sep 2026US 12,732,276 B2Verizon Patent and Licensing Inc.
- Optical network unit testing in a multi-wavelength passive optical network system8 Sep 2026US 12,732,298 B2Verizon Patent and Licensing Inc.
- Service optical signal transmission method, network device, and optical network1 Sep 2026US 12,726,293 B2Huawei Technologies Co., Ltd.
- Central unit and remote unit25 Aug 2026US 12,719,579 B2Huawei Technologies Co., Ltd.
- Optical signal amplification18 Aug 2026US 12,712,330 B21FINITY Inc.
- Optical relay apparatus, optical transmission system, and optical relay method8 Oct 2026US 2026/0312687 A1NEC Corporation
- Control method for multiband optical transmission system, communication device, and storage medium1 Oct 2026US 2026/0303216 A1Zte Corporation
- Signal flatness adjustment method, electronic device and computer-readable medium24 Sep 2026US 2026/0291610 A1Zte Corporation
- Optical transmission device and optical transmission method3 Sep 2026US 2026/0261340 A1NTT, Inc.
- Optical communication device, optical amplifier, and optical amplification method3 Sep 2026US 2026/0261355 A11FINITY Inc.
Most cited
By later US patents
- Method of activating optical communication system, channel increasing/decreasing method, and computer-readable recording medium165US 6,839,160 B2Fujitsu Limited · 2005
- Dynamic controller for a multi-channel optical amplifier132US 6,535,330 B1Corning Incorporated · 2003
- Optical system with tunable in-fiber gratings114US 5,579,143 ACiena Corporation · 1996
- Apparatus and method for optical equalization and amplification111US 5,812,710 AFujitsu Limited · 1998
- Multi-wavelength light amplifier108US 6,055,092 AFujitsu Limited · 2000