H04J 14/0283
Wdm ring architectures
Official title: {WDM ring architectures}
H04J14/0283 (Wdm ring architectures) appears on 970 US grants and 851 published applications in this corpus.
Search patents in H04J- Granted patents
- 970
- Published applications
- 851
- Assignees
- 289
- Inventors
- 1,773
- Latest grant
- 14 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 2 | 0 |
| 1996 | 9 | 0 |
| 1997 | 6 | 0 |
| 1998 | 22 | 0 |
| 1999 | 24 | 0 |
| 2000 | 27 | 0 |
| 2001 | 35 | 15 |
| 2002 | 41 | 107 |
| 2003 | 52 | 83 |
| 2004 | 57 | 92 |
| 2005 | 51 | 71 |
| 2006 | 70 | 78 |
| 2007 | 66 | 53 |
| 2008 | 58 | 43 |
| 2009 | 70 | 61 |
| 2010 | 76 | 39 |
| 2011 | 41 | 31 |
| 2012 | 34 | 26 |
| 2013 | 47 | 27 |
| 2014 | 42 | 19 |
| 2015 | 24 | 14 |
| 2016 | 14 | 19 |
| 2017 | 17 | 7 |
| 2018 | 12 | 7 |
| 2019 | 10 | 11 |
| 2020 | 11 | 9 |
| 2021 | 9 | 16 |
| 2022 | 12 | 8 |
| 2023 | 9 | 7 |
| 2024 | 4 | 2 |
| 2025 | 4 | 4 |
| 2026 | 1 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- WDM channel reassignment14 Jul 2026US 12,683,707 B2Taiwan Semiconductor Manufacturing Company.Ltd
- Tunable optical add/drop multiplexer14 Oct 2025US 12,445,221 B2Huawei Technologies Co., Ltd.
- Optical access network2 Sep 2025US 12,407,416 B2Nippon Telegraph and Telephone Corporation
- Wavelength cross connect device, multiband transmission system, and multiband transmission method27 May 2025US 12,316,383 B2Nippon Telegraph and Telephone Corporation
- Communication system and communication method7 Jan 2025US 12,192,032 B2Nippon Telegraph and Telephone Corporation
- Optical communication network system20 Aug 2026US 2026/0246556 A1Keio University
- Optical communication system and communication method1 Jan 2026US 2026/0005783 A1Huawei Technologies Co., Ltd.
- Wdm channel reassignment20 Nov 2025US 2025/0358037 A1Taiwan Semiconductor Manufacturing Company.Ltd
- Optical Network Nodes12 Jun 2025US 2025/0192910 A1
- Optical path switching node, optical fiber network and test method for the optical fiber network22 May 2025US 2025/0168538 A1Nippon Telegraph and Telephone Corporation
Most cited
By later US patents
- Power line communications system and method of operating the same239US 7,321,291 B2Current Technologies, LLC · 2008
- Method and apparatus for multiplexing in a wireless communication infrastructure211US 6,826,163 B2NEXTG Networks · 2004
- Power line communications device and method of use202US 7,382,232 B2Current Technologies, LLC · 2008
- Method and apparatus for multiplexing in a wireless communication infrastructure201US 6,826,164 B2NEXTG Networks · 2004
- Inter-ring cross-connect for survivable multi-wavelength optical communication networks178US 6,226,111 B1Telcordia Technologies, Inc. · 2001