H04B 10/506
Multiwavelength transmitters
Official title: {Multiwavelength transmitters}
H04B10/506 (Multiwavelength transmitters) appears on 1,017 US grants and 1,020 published applications in this corpus.
Search patents in H04B- Granted patents
- 1,017
- Published applications
- 1,020
- Assignees
- 400
- Inventors
- 1,976
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 5 | 0 |
| 1990 | 7 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 6 | 0 |
| 1994 | 3 | 0 |
| 1995 | 6 | 0 |
| 1996 | 7 | 0 |
| 1997 | 7 | 0 |
| 1998 | 13 | 0 |
| 1999 | 14 | 0 |
| 2000 | 28 | 0 |
| 2001 | 28 | 11 |
| 2002 | 28 | 46 |
| 2003 | 24 | 41 |
| 2004 | 19 | 39 |
| 2005 | 23 | 36 |
| 2006 | 43 | 29 |
| 2007 | 29 | 18 |
| 2008 | 18 | 14 |
| 2009 | 19 | 16 |
| 2010 | 14 | 29 |
| 2011 | 15 | 16 |
| 2012 | 28 | 33 |
| 2013 | 22 | 37 |
| 2014 | 30 | 37 |
| 2015 | 46 | 40 |
| 2016 | 56 | 40 |
| 2017 | 44 | 57 |
| 2018 | 43 | 66 |
| 2019 | 56 | 59 |
| 2020 | 61 | 59 |
| 2021 | 49 | 64 |
| 2022 | 50 | 53 |
| 2023 | 55 | 54 |
| 2024 | 38 | 42 |
| 2025 | 43 | 41 |
| 2026 | 27 | 43 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Optical transmitter including splitting elements, external modulators, and wavelength multiplexers, and optical transceiver including polarization separation elements, wavelength demultiplexers, polarization rotation elements, and photodetectors6 Oct 2026US 12,756,476 B2Mitsubishi Electric Corporation
- Ridge waveguide laser with dielectric current confinement29 Sep 2026US 12,749,872 B2Applied Optoelectronics, Inc.
- High-isolation light source filling device and method in wavelength Division multiplexing system25 Aug 2026US 12,719,577 B2Accelink Technologies Co., Ltd.
- Central unit and remote unit25 Aug 2026US 12,719,579 B2Huawei Technologies Co., Ltd.
- Optically coupled multi-node computing system25 Aug 2026US 12,719,587 B2Shanghai Xizhi Technology Co., Ltd.
- Optical relay apparatus, optical transmission system, and optical relay method8 Oct 2026US 2026/0312687 A1NEC Corporation
- Bi-directional dense wavelength multiplexed optical communication systems1 Oct 2026US 2026/0303217 A1Quintessent Inc.
- Optical transceiver24 Sep 2026US 2026/0291611 A1Industrial Technology Research Institute
- An optical wireless communication system17 Sep 2026US 2026/0280706 A1Signify Holding B. V.
- Optical communication assembly, optical communication device, and optical communication system17 Sep 2026US 2026/0280711 A1
Most cited
By later US patents
- Crosstalk-free signal source for dense wavelength division multiplexed systems308US 6,233,080 B1Ciena Corporation · 2001
- Alternating sequential half duplex communication system218US 4,979,170 AQUALCOMM Incorporated · 1990
- Method and apparatus for transmitting broadband amplitude modulated radio frequency signals over optical links204US 5,191,459 AScientific-Atlanta, Inc. · 1993
- Method and apparatus for improving spectral efficiency in wavelength division multiplexed transmission systems196US 6,134,033 ATyco Submarine Systems Ltd. · 2000
- High performance data paths176US 6,301,637 B1Storage Technology Corporation · 2001