H04B 10/2589
Bidirectional transmission
Official title: {Bidirectional transmission}
H04B10/2589 (Bidirectional transmission) appears on 1,160 US grants and 1,141 published applications in this corpus.
Search patents in H04B- Granted patents
- 1,160
- Published applications
- 1,141
- Assignees
- 562
- Inventors
- 2,237
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 5 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 6 | 0 |
| 1982 | 6 | 0 |
| 1983 | 4 | 0 |
| 1984 | 6 | 0 |
| 1985 | 5 | 0 |
| 1986 | 2 | 0 |
| 1987 | 7 | 0 |
| 1988 | 7 | 0 |
| 1989 | 8 | 0 |
| 1990 | 5 | 0 |
| 1991 | 12 | 0 |
| 1992 | 4 | 0 |
| 1993 | 4 | 0 |
| 1994 | 13 | 0 |
| 1995 | 9 | 0 |
| 1996 | 17 | 0 |
| 1997 | 7 | 0 |
| 1998 | 7 | 0 |
| 1999 | 12 | 0 |
| 2000 | 12 | 0 |
| 2001 | 11 | 3 |
| 2002 | 14 | 16 |
| 2003 | 9 | 11 |
| 2004 | 6 | 17 |
| 2005 | 12 | 18 |
| 2006 | 7 | 7 |
| 2007 | 14 | 8 |
| 2008 | 9 | 7 |
| 2009 | 8 | 10 |
| 2010 | 7 | 19 |
| 2011 | 6 | 16 |
| 2012 | 16 | 16 |
| 2013 | 14 | 29 |
| 2014 | 21 | 45 |
| 2015 | 44 | 109 |
| 2016 | 75 | 84 |
| 2017 | 89 | 124 |
| 2018 | 110 | 143 |
| 2019 | 128 | 99 |
| 2020 | 120 | 92 |
| 2021 | 80 | 76 |
| 2022 | 68 | 56 |
| 2023 | 41 | 44 |
| 2024 | 41 | 29 |
| 2025 | 24 | 28 |
| 2026 | 22 | 35 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Optical communication cable with selective communication states6 Oct 2026US 12,756,469 B2Mellanox Technologies, Ltd.
- High-precision distributed broadband microwave photonic local oscillator signal transmission system based on frequency tuning6 Oct 2026US 12,756,470 B2China Electronics Technology Group Corporation No 44 Research Institute
- Systems and methods for low data rate, low power bi-directional transmissions over existing physical communication media29 Sep 2026US 12,750,086 B2Applied Optoelectronics, Inc.
- Optical transmission method and apparatus22 Sep 2026US 12,744,600 B2Huawei Technologies Co., Ltd.
- High-isolation light source filling device and method in wavelength Division multiplexing system25 Aug 2026US 12,719,577 B2Accelink Technologies Co., Ltd.
- Microwave photon broadband phase-stabilized transmission center station based on amplitude-phase multiplexing and transmission system having the same8 Oct 2026US 2026/0312686 A1China Electronics Technology Group Corporation No 44 Research Institute
- Bi-directional optical communication modules and cables1 Oct 2026US 2026/0303215 A1
- Bi-directional dense wavelength multiplexed optical communication systems1 Oct 2026US 2026/0303217 A1Quintessent Inc.
- Dual-polarization bidirectional optical devices1 Oct 2026US 2026/0303218 A1
- Secure optical frequency comb (ofc), two-way optical time transfer (twott) system and associated method1 Oct 2026US 2026/0303225 A1Arizona Board of Regents on Behalf of the University of Arizona
Most cited
By later US patents
- Repeatered, multi-channel fiber optic communication network having fault isolation system259US 4,451,916 AHarris Corporation · 1984
- Fiber drop terminal184US 7,489,849 B2ADC Telecommunications, Inc. · 2009
- Fiber drop terminal153US 7,805,044 B2ADC Telecommunications, Inc. · 2010
- Service integrated communication transmission and interchange system148US 4,441,180 ALicentia Patent-Verwaltungs-G.m.b.H. · 1984
- Fiber drop terminal133US 7,627,222 B2ADC Telecommunications, Inc. · 2009