H04B 2210/003
Devices including multiple stages
Official title: Devices including multiple stages, e.g., multi-stage optical amplifiers or dispersion compensators
H04B2210/003 (Devices including multiple stages) appears on 261 US grants and 173 published applications in this corpus.
Search patents in H04B- Granted patents
- 261
- Published applications
- 173
- Assignees
- 104
- Inventors
- 428
- Latest grant
- 18 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1993 | 3 | 0 |
| 1994 | 2 | 0 |
| 1995 | 6 | 0 |
| 1996 | 8 | 0 |
| 1997 | 6 | 0 |
| 1998 | 10 | 0 |
| 1999 | 13 | 0 |
| 2000 | 14 | 0 |
| 2001 | 19 | 7 |
| 2002 | 26 | 27 |
| 2003 | 19 | 22 |
| 2004 | 21 | 20 |
| 2005 | 17 | 13 |
| 2006 | 20 | 12 |
| 2007 | 8 | 11 |
| 2008 | 13 | 10 |
| 2009 | 5 | 1 |
| 2010 | 5 | 2 |
| 2011 | 4 | 7 |
| 2012 | 3 | 0 |
| 2013 | 4 | 3 |
| 2014 | 2 | 4 |
| 2015 | 4 | 4 |
| 2016 | 3 | 1 |
| 2017 | 1 | 1 |
| 2018 | 1 | 2 |
| 2019 | 2 | 2 |
| 2020 | 2 | 6 |
| 2021 | 4 | 2 |
| 2022 | 7 | 7 |
| 2023 | 5 | 3 |
| 2024 | 1 | 4 |
| 2025 | 1 | 1 |
| 2026 | 2 | 1 |
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.
- RF steganography based on photonics17 Mar 2026US 12,580,656 B2University of Georgia Research Foundation, Inc.
- Methods, devices, and systems for integration, beam forming and steering of ultra-wideband, wireless optical communication devices and systems4 Mar 2025US 12,244,342 B2Lumeova, Inc.
- Optical receiver25 Jun 2024US 12,021,568 B2Fujitsu Limited
- Optical-time-division-multiplexed transmission system using sinusoidally modulated optical signal as input pulse source24 Oct 2023US 11,799,556 B2Korea Advanced Institute of Science and Technology
- Variable coupler3 Sep 2026US 2026/0259383 A1Taara Connect, Inc.
- Methods, devices, and systems for integration, beam forming and steering of ultra-wideband, wireless optical communication devices and systems19 Jun 2025US 2025/0202578 A1Lumeova, Inc.
- Optical signal amplification1 Aug 2024US 2024/0258758 A1Fujitsu Limited
- Forward raman amplifier, bidirectional raman amplification system, and forward raman amplification system18 Apr 2024US 2024/0129034 A1Fujitsu Limited
- Rf steganography based on photonics7 Mar 2024US 2024/0080101 A1University of Georgia Research Foundation, Inc.
Most cited
By later US patents
- Optical fiber transmission system and supervision method of the same114US 5,500,756 AHitachi, Ltd. · 1996
- Optical signal varying devices104US 6,115,174 ACorvis Corporation · 2000
- Optical monitoring channel for wavelength division multiplexed optical communication system101US 5,532,864 ACiena Corporation · 1996
- High power, high gain, low noise, two-stage optical amplifier100US 5,430,572 AAT&T Corp. · 1995
- Compact-size optical amplifier94US 5,383,051 APirelli Cavi S.p.A. · 1995