H04J 14/0227
Operation, administration, maintenance or provisioning [oamp] of wdm networks
Official title: {Operation, administration, maintenance or provisioning [OAMP] of WDM networks, e.g. media access, routing or wavelength allocation}
H04J14/0227 (Operation, administration, maintenance or provisioning [oamp] of wdm networks) appears on 3,780 US grants and 4,042 published applications in this corpus.
Search patents in H04J- Granted patents
- 3,780
- Published applications
- 4,042
- Assignees
- 754
- Inventors
- 5,657
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 3 | 0 |
| 1989 | 3 | 0 |
| 1990 | 3 | 0 |
| 1991 | 2 | 0 |
| 1992 | 7 | 0 |
| 1993 | 7 | 0 |
| 1994 | 14 | 0 |
| 1995 | 6 | 0 |
| 1996 | 27 | 0 |
| 1997 | 14 | 0 |
| 1998 | 30 | 0 |
| 1999 | 34 | 0 |
| 2000 | 42 | 0 |
| 2001 | 30 | 25 |
| 2002 | 46 | 161 |
| 2003 | 60 | 169 |
| 2004 | 80 | 168 |
| 2005 | 66 | 171 |
| 2006 | 129 | 180 |
| 2007 | 135 | 166 |
| 2008 | 135 | 124 |
| 2009 | 147 | 184 |
| 2010 | 164 | 142 |
| 2011 | 121 | 137 |
| 2012 | 128 | 214 |
| 2013 | 159 | 207 |
| 2014 | 228 | 206 |
| 2015 | 238 | 226 |
| 2016 | 216 | 174 |
| 2017 | 223 | 207 |
| 2018 | 184 | 189 |
| 2019 | 244 | 192 |
| 2020 | 198 | 150 |
| 2021 | 154 | 162 |
| 2022 | 154 | 140 |
| 2023 | 121 | 123 |
| 2024 | 89 | 89 |
| 2025 | 67 | 80 |
| 2026 | 66 | 56 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Optical time domain reflectometer (OTDR)-based fiber monitoring optimization6 Oct 2026US 12,756,459 B2Viavi Solutions Inc.
- Optical network unit, central office node and methods of configuring an optical network unit22 Sep 2026US 12,744,616 B2Telefonaktiebolaget LM Ericsson (publ)
- Broadband polarization-entangled system for C+L-band flex-grid quantum networks15 Sep 2026US 12,739,047 B2UT-Battelle, LLC
- Initiating a communication or connectivity service between a first location and a second location based on optical data transmission of a user-defined optical signal15 Sep 2026US 12,739,048 B2Deutsche Telekom AG
- Communication in multi-wavelength passive optical networks15 Sep 2026US 12,739,541 B1Calix, Inc.
- Optical line termination power saving mode17 Sep 2026US 2026/0280713 A1Verizon Patent and Licensing Inc.
- Optical wavelength variable filter, method of controlling the same, and optical transceiver27 Aug 2026US 2026/0251851 A1NEC Corporation
- Optical transmission system, optical transmission apparatus and optical transmission method27 Aug 2026US 2026/0254552 A1NTT, Inc.
- Wavelength division multiplexing (wdm) lane shuffling in a network27 Aug 2026US 2026/0255090 A1Mellanox Technologies, Ltd.
- Optical communication network system20 Aug 2026US 2026/0246556 A1Keio University
Most cited
By later US patents
- Digital communication network architecture for providing universal information services520US 4,763,317 AAmerican Telephone and Telegraph Company, AT&T Bell Laboratories · 1988
- System and method for optical coherence imaging448US 7,366,376 B2The General Hospital Corporation · 2008
- Power line communications system and method of operating the same239US 7,321,291 B2Current Technologies, LLC · 2008
- Method and apparatus for providing power to waveguide systems232US 10,371,889 B1AT&T Intellectual Property I, L. P. · 2019
- Wavelength division multiplexing-passive optical network system227US 9,008,513 B2Electronics and Telecommunications Research Institute · 2015