H04J 14/0234
Using multiple wavelengths
Official title: {using multiple wavelengths}
H04J14/0234 (Using multiple wavelengths) appears on 50 US grants and 36 published applications in this corpus.
Search patents in H04J- Granted patents
- 50
- Published applications
- 36
- Assignees
- 36
- Inventors
- 98
- Latest grant
- 9 Dec 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 4 | 0 |
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 1 |
| 2005 | 0 | 2 |
| 2006 | 0 | 1 |
| 2007 | 0 | 0 |
| 2008 | 2 | 0 |
| 2009 | 0 | 1 |
| 2010 | 1 | 0 |
| 2011 | 1 | 1 |
| 2012 | 2 | 5 |
| 2013 | 2 | 2 |
| 2014 | 4 | 2 |
| 2015 | 3 | 1 |
| 2016 | 1 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 1 |
| 2019 | 0 | 1 |
| 2020 | 4 | 5 |
| 2021 | 2 | 3 |
| 2022 | 4 | 4 |
| 2023 | 5 | 3 |
| 2024 | 2 | 1 |
| 2025 | 3 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Transmission device, transmission method, reception device, and reception method9 Dec 2025US 12,494,858 B2Panasonic Intellectual Property Corporation of America
- Communication method based on passive optical network, related device, and system24 Jun 2025US 12,342,110 B2Huawei Technologies Co., Ltd.
- Optical communications module link extender including ethernet and PON amplification14 Jan 2025US 12,199,743 B2Cox Communications, Inc.
- Systems and methods for coarse wavelength division multiplexing premise level data communication26 Nov 2024US 12,155,458 B2Duke Energy Corporation, A-PLUS Community Solutions, Inc.
- Transmission device, transmission method, reception device, and reception method2 Jul 2024US 12,028,152 B2Panasonic Intellectual Property Corporation of America
- Communication method based on passive optical network, related device, and system4 Sep 2025US 2025/0280218 A1Huawei Technologies Co., Ltd.
- Communication apparatus and optical path opening method17 Jul 2025US 2025/0233667 A1Nippon Telegraph and Telephone Corporation
- Transmission device, transmission method, reception device, and reception method12 Sep 2024US 2024/0305398 A1Panasonic Intellectual Property Corporation of America
- Systems and methods for coarse wavelength division multiplexing premise level data communication6 Jul 2023US 2023/0216601 A1A-PLUS Community Solutions, Inc.
- Transmission device, transmission method, reception device, and reception method15 Jun 2023US 2023/0188242 A1Panasonic Intellectual Property Corporation of America
Most cited
By later US patents
- Optical system with tunable in-fiber gratings114US 5,579,143 ACiena Corporation · 1996
- Switch and insertion networks in optical cable TV system97US 5,659,351 ACiena Corporation · 1997
- Optical amplifiers with flattened gain curves92US 5,557,442 ACiena Corporation · 1996
- Wavelength-division multiplexing in passive optical networks78US 6,411,410 B1Fujitsu Limited · 2002
- Wavelength division multiplexing passive optical network including broadcast overlay76US 5,694,234 ALucent Technologies Inc. · 1997