H04J 14/05
Spatial multiplexing systems
Official title: {Spatial multiplexing systems}
H04J14/05 (Spatial multiplexing systems) appears on 161 US grants and 223 published applications in this corpus.
Search patents in H04J- Granted patents
- 161
- Published applications
- 223
- Assignees
- 82
- Inventors
- 379
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 1 | 3 |
| 2011 | 0 | 4 |
| 2012 | 1 | 9 |
| 2013 | 5 | 11 |
| 2014 | 8 | 9 |
| 2015 | 12 | 14 |
| 2016 | 14 | 11 |
| 2017 | 10 | 10 |
| 2018 | 8 | 15 |
| 2019 | 12 | 7 |
| 2020 | 9 | 13 |
| 2021 | 9 | 11 |
| 2022 | 14 | 18 |
| 2023 | 9 | 23 |
| 2024 | 14 | 32 |
| 2025 | 20 | 19 |
| 2026 | 13 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Controlling a multi-rail switch in a space-division multiplexing optical network15 Sep 2026US 12,739,050 B2Ciena Corporation
- Technique to reduce signal crosstalk between cores in a multi-core optical fiber transmission8 Sep 2026US 12,732,300 B2NTT, Inc.
- Frequency conversion of a wavelength division multiplexed light source25 Aug 2026US 12,717,211 B2TOPTICA Photonics AG
- Metasurface-based optical signal manipulation devices for optical fiber communications28 Jul 2026US 12,693,473 B2Corning Incorporated
- Equalization apparatus, optical transmission system, and equalization method28 Jul 2026US 12,695,507 B2NEC Corporation
- Optical Circuit Switch With Multi-Core Fibers And Optical Systems Implementing Same6 Aug 2026US 2026/0227576 A1Google Inc.
- Method for measuring crosstalk between spatial channels, and device for measuring crosstalk between spatial channels6 Aug 2026US 2026/0230178 A1Sumitomo Electric Industries, Ltd.
- Optical transmission link, optical transmission system and optical transmission method23 Jul 2026US 2026/0213868 A1NTT, Inc.
- Beamforming system9 Jul 2026US 2026/0196724 A1Huawei Technologies Co., Ltd.
- Methods and apparatus for high capacity spectrally efficient mimo and optical beamforming enabled photonic millimeter-wave over fiber (mmwof) wireless transceiver systems based on quantum dot multi-wavelength lasers with wavelength division multiplexing and space division multiplexing25 Jun 2026US 2026/0180685 A1National Research Council of Canada
Most cited
By later US patents
- Communication system for dynamically combining power from a plurality of propagation channels in order to improve power levels of transmitted signals without affecting receiver and propagation segments55US 8,111,646 B12012
- Coherent power combining for signals through multiple satellite communications channels50US 8,547,897 B22013
- Re-generation and re-transmission of millimeter waves for building penetration33US 10,374,710 B2Nxgen Partners IP, LLC · 2019
- Multicore fiber transmission systems and methods19US 8,725,001 B2OFS Fitel, LLC · 2014
- Space-division multiplexed reconfigurable, wavelength selective switch18US 10,996,399 B2Roadmap Systems Ltd · 2021