H04J 14/0209
Multi-stage arrangements
Official title: {Multi-stage arrangements, e.g. by cascading multiplexers or demultiplexers}
H04J14/0209 (Multi-stage arrangements) appears on 416 US grants and 363 published applications in this corpus.
Search patents in H04J- Granted patents
- 416
- Published applications
- 363
- Assignees
- 187
- Inventors
- 755
- Latest grant
- 7 Jul 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 5 | 0 |
| 1998 | 9 | 0 |
| 1999 | 10 | 0 |
| 2000 | 10 | 0 |
| 2001 | 28 | 10 |
| 2002 | 21 | 58 |
| 2003 | 34 | 42 |
| 2004 | 22 | 26 |
| 2005 | 19 | 16 |
| 2006 | 26 | 12 |
| 2007 | 24 | 14 |
| 2008 | 13 | 16 |
| 2009 | 13 | 17 |
| 2010 | 16 | 20 |
| 2011 | 10 | 9 |
| 2012 | 20 | 13 |
| 2013 | 13 | 12 |
| 2014 | 14 | 9 |
| 2015 | 15 | 11 |
| 2016 | 10 | 4 |
| 2017 | 10 | 7 |
| 2018 | 6 | 4 |
| 2019 | 10 | 13 |
| 2020 | 6 | 11 |
| 2021 | 16 | 10 |
| 2022 | 10 | 10 |
| 2023 | 11 | 10 |
| 2024 | 5 | 5 |
| 2025 | 1 | 2 |
| 2026 | 6 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Optical multi-wavelength dual-polarization transceivers7 Jul 2026US 12,676,691 B2Aloe Semiconductor Inc.
- Mode multiplexer/demultiplexer using metamaterials for optical fiber communications16 Jun 2026US 12,659,036 B2Corning Incorporated
- Configurable intensity-modulation direct detection (IMDD) optical transceivers16 Jun 2026US 12,659,064 B2Aloe Semiconductor Inc.
- Add/drop capability for spatial division multiplexed optical systems5 May 2026US 12,621,076 B2Solutions and Networks Oy
- Optical amplification system, optical amplification apparatus and optical amplification method10 Mar 2026US 12,574,136 B2NTT, Inc.
- Optical multi-wavelength dual-polarization transceivers1 Oct 2026US 2026/0303248 A1Aloe Semiconductor Inc.
- Optical network component configuration27 Aug 2026US 2026/0254550 A1Telefonaktiebolaget LM Ericsson (publ)
- Short wavelength division multiplexing system26 Jun 2025US 2025/0211357 A1Cisco Technology, Inc.
- On-chip integrated wavelength division multiplexer and chip30 Jan 2025US 2025/0038877 A1Picmore Technology (Suzhou) Ltd.
- Techniques for efficient tuning of micro-ring modulators for wavelength division multiplexing5 Dec 2024US 2024/0405908 A1Lightmatter, Inc.
Most cited
By later US patents
- WDM optical network with passive pass-through at each node146US 6,084,694 ANortel Networks Limited · 2000
- Optical systems with grating reflector133US 5,283,686 AGeneral Instrument Corporation, Jerrold Communications · 1994
- Optical add-drop multiplexers for WDM optical communication systems125US 5,778,118 ACiena Corporation · 1998
- Article comprising a wavelength-selective add-drop multiplexer111US 5,974,207 ALucent Technologies Inc. · 1999
- Dense wavelength division multiplexer and demultiplexer devices106US 5,748,350 AE-Tek Dynamics, Inc. · 1998