H04J 14/02216
By gain equalization
Official title: {by gain equalization}
H04J14/02216 (By gain equalization) appears on 668 US grants and 650 published applications in this corpus.
Search patents in H04J- Granted patents
- 668
- Published applications
- 650
- Assignees
- 188
- Inventors
- 1,130
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 5 | 0 |
| 1999 | 15 | 0 |
| 2000 | 14 | 0 |
| 2001 | 20 | 8 |
| 2002 | 22 | 43 |
| 2003 | 33 | 40 |
| 2004 | 30 | 61 |
| 2005 | 26 | 26 |
| 2006 | 36 | 21 |
| 2007 | 36 | 31 |
| 2008 | 16 | 25 |
| 2009 | 28 | 34 |
| 2010 | 28 | 20 |
| 2011 | 22 | 26 |
| 2012 | 28 | 36 |
| 2013 | 26 | 16 |
| 2014 | 31 | 25 |
| 2015 | 32 | 34 |
| 2016 | 32 | 32 |
| 2017 | 42 | 24 |
| 2018 | 26 | 20 |
| 2019 | 16 | 31 |
| 2020 | 19 | 14 |
| 2021 | 11 | 8 |
| 2022 | 12 | 20 |
| 2023 | 16 | 26 |
| 2024 | 15 | 11 |
| 2025 | 10 | 15 |
| 2026 | 11 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Optical communication device, optical amplifier, and optical amplification method3 Sep 2026US 2026/0261355 A11FINITY Inc.
- Variable optical attenuator array, and power adjustment device23 Apr 2026US 2026/0110843 A1Huawei Technologies Co., Ltd.
- Optical transmission device and related network25 Dec 2025US 2025/0392392 A1Huawei Technologies Co., Ltd.
- Method and device for signal fingerprinting using joint feature likelihoods25 Sep 2025US 2025/0300756 A1Raytheon Company
Most cited
By later US patents
- Optical transmission system equalizer176US 5,225,922 AAT&T Bell Laboratories · 1993
- Method of activating optical communication system, channel increasing/decreasing method, and computer-readable recording medium165US 6,839,160 B2Fujitsu Limited · 2005
- Multi-wavelength light amplifier108US 6,055,092 AFujitsu Limited · 2000
- Method and apparatus for dynamic equalization in wavelength division multiplexing92US 6,782,205 B2Silicon Light Machines Corporation · 2004
- Wavelength division multiplexing optical transmission apparatus and optical repeater89US 5,920,414 AKabushiki Kaisha Toshiba · 1999