H04J 14/02212
By addition of a dummy signal
Official title: {by addition of a dummy signal}
H04J14/02212 (By addition of a dummy signal) appears on 80 US grants and 84 published applications in this corpus.
Search patents in H04J- Granted patents
- 80
- Published applications
- 84
- Assignees
- 41
- Inventors
- 154
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 1 |
| 2002 | 3 | 4 |
| 2003 | 3 | 5 |
| 2004 | 2 | 6 |
| 2005 | 3 | 5 |
| 2006 | 5 | 9 |
| 2007 | 5 | 5 |
| 2008 | 5 | 3 |
| 2009 | 5 | 2 |
| 2010 | 4 | 2 |
| 2011 | 4 | 3 |
| 2012 | 2 | 0 |
| 2013 | 0 | 2 |
| 2014 | 2 | 1 |
| 2015 | 3 | 5 |
| 2016 | 2 | 5 |
| 2017 | 4 | 2 |
| 2018 | 3 | 4 |
| 2019 | 4 | 2 |
| 2020 | 3 | 4 |
| 2021 | 3 | 0 |
| 2022 | 1 | 4 |
| 2023 | 4 | 3 |
| 2024 | 2 | 3 |
| 2025 | 0 | 2 |
| 2026 | 3 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Optical transmission system, optical device, and optical processing method8 Sep 2026US 12,732,274 B2NEC Corporation
- Dummy-light generation device, optical transmission system, and dummy-light generation method30 Jun 2026US 12,671,516 B2NEC Corporation
- Dummy light signal generation apparatus and method, and reconfigurable optical add/drop multiplexer19 May 2026US 12,634,032 B2Huawei Technologies Co., Ltd.
- Apparatus and cascading system for generating dummy optical signal27 Aug 2024US 12,074,689 B2Huawei Technologies Co., Ltd.
- Optical transmission device and optical communication system6 Aug 2024US 12,057,929 B2NEC Corporation
- Optical Architectural Solution for Coherent Burst Mode Transmitter28 May 2026US 2026/0149522 A1Ciena Corporation
- Dummy light transmission method, dummy light identification method, and related device12 Mar 2026US 2026/0074783 A1Huawei Technologies Co., Ltd.
- Auto-provisioning optical channels based on spectrum monitoring4 Sep 2025US 2025/0280217 A1Ciena Corporation
- Method and system for amplified spontaneous emission transition management in an optical network3 Apr 2025US 2025/0113125 A1Infinera Corporation
- Optical transmission device and optical communication system31 Oct 2024US 2024/0364443 A1NEC Corporation
Most cited
By later US patents
- Stable power control for optical transmission systems43US 6,031,647 ANortel Networks Limited · 2000
- Amplified telecommunication system for wavelength-division multiplexing transmission having an equalized reception power29US 5,852,510 APirelli Cavi S.p.A. · 1998
- Transient and switching event stabilization of fiber optic transport systems24US 8,971,705 B2Ciena Corporation · 2015
- Stable power control for optical transmission systems22US 6,268,945 B1Nortel Networks Limited · 2001
- Optical amplifying apparatus for amplifying wide-wavelength-band light, optical sending apparatus, optical transmission system, and optical amplifying method21US 6,885,499 B1Fujitsu Limited · 2005