H04B 10/2941
Using an equalising unit
Official title: {using an equalising unit, e.g. a filter (H04B10/296 takes precedence)}
H04B10/2941 (Using an equalising unit) appears on 289 US grants and 201 published applications in this corpus.
Search patents in H04B- Granted patents
- 289
- Published applications
- 201
- Assignees
- 121
- Inventors
- 539
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 4 | 0 |
| 1996 | 5 | 0 |
| 1997 | 9 | 0 |
| 1998 | 5 | 0 |
| 1999 | 8 | 0 |
| 2000 | 19 | 0 |
| 2001 | 20 | 4 |
| 2002 | 32 | 31 |
| 2003 | 27 | 28 |
| 2004 | 18 | 17 |
| 2005 | 16 | 14 |
| 2006 | 15 | 6 |
| 2007 | 11 | 10 |
| 2008 | 7 | 3 |
| 2009 | 3 | 1 |
| 2010 | 3 | 5 |
| 2011 | 5 | 7 |
| 2012 | 5 | 4 |
| 2013 | 4 | 1 |
| 2014 | 4 | 0 |
| 2015 | 3 | 4 |
| 2016 | 2 | 0 |
| 2017 | 4 | 5 |
| 2018 | 5 | 5 |
| 2019 | 6 | 6 |
| 2020 | 8 | 9 |
| 2021 | 5 | 5 |
| 2022 | 3 | 8 |
| 2023 | 9 | 8 |
| 2024 | 10 | 8 |
| 2025 | 8 | 7 |
| 2026 | 4 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Optical signal amplification18 Aug 2026US 12,712,330 B21FINITY Inc.
- Gain equalization apparatus and method for equalizing gain16 Jun 2026US 12,659,039 B2NEC Corporation
- Gain equalization in C+L erbium-doped fiber amplifiers7 Apr 2026US 12,597,752 B2Subcom, LLC
- Optical signal amplification apparatus and related optical communication device27 Jan 2026US 12,537,357 B2Huawei Technologies Co., Ltd.
- Integrated transciever systems and methods23 Dec 2025US 12,506,541 B1Cable Television Laboratories, Inc.
- Optical amplification relay device, optical transmission system and optical amplification relay method20 Aug 2026US 2026/0246534 A1NTT, Inc.
- Gain equalization in c+l erbium-doped fiber amplifiers9 Jul 2026US 2026/0196795 A1Subcom, LLC
- Multi-Core Fiber Gain Flattening Filter and Shape Correcting Filter9 Jul 2026US 2026/0196796 A1Subcom, LLC
- Optical transmission device and optical transmission system7 May 2026US 2026/0128794 A1Fujitsu Limited
- Integrated transceiver systems and methods30 Apr 2026US 2026/0121750 A1Cable Television Laboratories, Inc.
Most cited
By later US patents
- Dynamic controller for a multi-channel optical amplifier132US 6,535,330 B1Corning Incorporated · 2003
- Optical system with tunable in-fiber gratings114US 5,579,143 ACiena Corporation · 1996
- Apparatus and method for optical equalization and amplification111US 5,812,710 AFujitsu Limited · 1998
- Optical fiber amplifier with gain equalizing circuit102US 5,436,760 ANEC Corporation · 1995
- Switch and insertion networks in optical cable TV system97US 5,659,351 ACiena Corporation · 1997