H04B 2210/078
Using a separate wavelength
Official title: using a separate wavelength
H04B2210/078 (Using a separate wavelength) appears on 213 US grants and 134 published applications in this corpus.
Search patents in H04B- Granted patents
- 213
- Published applications
- 134
- Assignees
- 101
- Inventors
- 461
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 6 | 0 |
| 1997 | 4 | 0 |
| 1998 | 11 | 0 |
| 1999 | 13 | 0 |
| 2000 | 12 | 0 |
| 2001 | 18 | 4 |
| 2002 | 17 | 17 |
| 2003 | 13 | 14 |
| 2004 | 12 | 24 |
| 2005 | 13 | 13 |
| 2006 | 6 | 4 |
| 2007 | 10 | 4 |
| 2008 | 9 | 5 |
| 2009 | 4 | 4 |
| 2010 | 8 | 1 |
| 2011 | 2 | 6 |
| 2012 | 6 | 2 |
| 2013 | 3 | 2 |
| 2014 | 4 | 1 |
| 2015 | 1 | 4 |
| 2016 | 2 | 4 |
| 2017 | 4 | 4 |
| 2018 | 5 | 4 |
| 2019 | 1 | 4 |
| 2020 | 5 | 5 |
| 2021 | 7 | 1 |
| 2022 | 0 | 1 |
| 2023 | 1 | 1 |
| 2024 | 0 | 0 |
| 2025 | 0 | 1 |
| 2026 | 1 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Optical transmission line monitoring device, optical transmission line monitoring method, and recording medium storing optical transmission line monitoring program25 Aug 2026US 12,719,570 B2NEC Corporation
- Integrated polarimeter in an optical line system5 Sep 2023US 11,747,208 B2Ciena Corporation
- Integrated polarimeter in an optical line system28 Dec 2021US 11,209,315 B2Ciena Corporation
- System and method for fiber-optic time, frequency and data joint transmission12 Oct 2021US 11,146,334 B2Shanghai Jiao Tong University
- Optical transmission device and optical transmission method6 Jul 2021US 11,057,110 B2NEC Corporation
- Hollow core fiber-based line-system with out-of-band optical supervisory channel30 Apr 2026US 2026/0121746 A1Microsoft Technology Licensing, LLC
- Optical transmission system and optical transmission device26 Mar 2026US 2026/0088897 A11FINITY Inc.
- Optical transmission device and optical transmission system26 Mar 2026US 2026/0088898 A11FINITY Inc.
- Optical transmission system and optical transmission device26 Mar 2026US 2026/0088899 A11FINITY Inc.
- Optical transmission line monitoring device, optical transmission line monitoring method, and recording medium storing optical transmission line monitoring program9 Jan 2025US 2025/0015885 A1NEC Corporation
Most cited
By later US patents
- Method and system for detecting optical faults within the optical domain of a fiber communication network248US 6,005,694 AMCI WorldCom, Inc. · 1999
- Method and system for transporting ancillary network data160US 6,108,113 AMCI Communications Corporation · 2000
- Fault detection for all-optical add-drop multiplexer125US 5,867,289 AInternational Business Machines Corporation · 1999
- Optical fiber transmission system and supervision method of the same114US 5,500,756 AHitachi, Ltd. · 1996
- Method and monitoring device for monitoring the quality of data transmission over analog lines103US 6,748,342 B1Nokia Corporation · 2004