H04J 14/0307
Multiplexers
Official title: {Multiplexers; Demultiplexers}
H04J14/0307 (Multiplexers) appears on 605 US grants and 607 published applications in this corpus.
Search patents in H04J- Granted patents
- 605
- Published applications
- 607
- Assignees
- 279
- Inventors
- 1,358
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 3 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 4 | 0 |
| 1996 | 5 | 0 |
| 1997 | 4 | 0 |
| 1998 | 22 | 0 |
| 1999 | 15 | 0 |
| 2000 | 12 | 0 |
| 2001 | 10 | 4 |
| 2002 | 22 | 38 |
| 2003 | 18 | 21 |
| 2004 | 20 | 33 |
| 2005 | 18 | 19 |
| 2006 | 33 | 19 |
| 2007 | 18 | 20 |
| 2008 | 13 | 9 |
| 2009 | 17 | 15 |
| 2010 | 10 | 12 |
| 2011 | 5 | 4 |
| 2012 | 7 | 16 |
| 2013 | 14 | 16 |
| 2014 | 12 | 18 |
| 2015 | 22 | 24 |
| 2016 | 28 | 41 |
| 2017 | 43 | 45 |
| 2018 | 35 | 30 |
| 2019 | 30 | 24 |
| 2020 | 18 | 29 |
| 2021 | 20 | 14 |
| 2022 | 22 | 23 |
| 2023 | 22 | 35 |
| 2024 | 24 | 37 |
| 2025 | 25 | 29 |
| 2026 | 19 | 32 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Technologies for optical demultiplexing with backwards compatibility6 Oct 2026US 12,754,364 B2Intel Corporation
- Optical fiber test method, ROADM system, server and storage medium29 Sep 2026US 12,750,152 B2Zte Corporation
- Optical signal transmission method and apparatus15 Sep 2026US 12,739,049 B2Huawei Technologies Co., Ltd.
- Optical space communication management device, optical space communication system, and optical space communication management method1 Sep 2026US 12,726,271 B2National Institute of Information and Communications Technology
- Bidirectional microring resonator-based photonic link architecture18 Aug 2026US 12,710,595 B2NVIDIA Corporation
- Dual-polarization bidirectional optical devices1 Oct 2026US 2026/0303218 A1
- Optical transmission device, optical transmission system, optical module, and optical controller1 Oct 2026US 2026/0303220 A11FINITY Inc.
- Multicore fiber optical transceiver24 Sep 2026US 2026/0291612 A1TeraHop USA Inc.
- Optical distribution network with coexisting passive optical network and coherent passive optical network10 Sep 2026US 2026/0269943 A1Cable Television Laboratories, Inc.
- System for distributing quantum keys using correction of the polarization of photons13 Aug 2026US 2026/0238352 A1
Most cited
By later US patents
- Multiwavelength data communication fiber link338US 5,278,687 APhysical Optics Corporation · 1994
- Optical multiplexer and demultiplexer151US 4,244,045 ANippon Telegraph & Telephone Public Corporation · 1981
- Chirped-pulse multiple wavelength telecommunications system147US 5,631,758 ALucent Technologies Inc. · 1997
- Optical communications system with wavelength division multiplexing134US 5,940,196 AHarmonic Lightwaves, Inc. · 1999
- Wireless signal distribution system and method124US 7,548,695 B2NEXTG Networks · 2009