H04B 3/38
For signals in two different frequency ranges transmitted in opposite directions over
Official title: for signals in two different frequency ranges transmitted in opposite directions over the same transmission path
H04B3/38 (For signals in two different frequency ranges transmitted in opposite directions over) appears on 68 US grants and 46 published applications in this corpus.
Search patents in H04B- Granted patents
- 68
- Published applications
- 46
- Assignees
- 35
- Inventors
- 84
- Latest grant
- 14 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 3 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 1 | 0 |
| 2002 | 1 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 3 |
| 2005 | 1 | 1 |
| 2006 | 2 | 1 |
| 2007 | 1 | 0 |
| 2008 | 1 | 0 |
| 2009 | 0 | 1 |
| 2010 | 0 | 0 |
| 2011 | 1 | 0 |
| 2012 | 0 | 0 |
| 2013 | 0 | 2 |
| 2014 | 1 | 2 |
| 2015 | 2 | 1 |
| 2016 | 0 | 7 |
| 2017 | 5 | 4 |
| 2018 | 4 | 3 |
| 2019 | 8 | 5 |
| 2020 | 7 | 7 |
| 2021 | 5 | 3 |
| 2022 | 1 | 3 |
| 2023 | 4 | 1 |
| 2024 | 1 | 1 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Cable network system for bidirectional communication at an enhanced duplex frequency range14 Jan 2025US 12,199,690 B2Ppc Broadband, Inc.
- Method and device for transmitting a message18 Jun 2024US 12,015,453 B2Sagemcom Energy & Telecom SAS
- Multiple input multiple output (MIMO) based concurrent scan of neighbor cells26 Dec 2023US 11,856,392 B2QUALCOMM Incorporated
- Amplification apparatus, device, and method for a tap of a cable communication network5 Dec 2023US 11,838,070 B2Intel Corporation
- Cable network system for bidirectional communication at an enhanced duplex frequency range14 Nov 2023US 11,817,915 B2Ppc Broadband, Inc.
- Cable network system for bidirectional communication at an enchanced duplex frequency range27 Mar 2025US 2025/0105874 A1Ppc Broadband, Inc.
- Cable network system for bidirectional communication at an enhanced duplex frequency range1 Feb 2024US 2024/0039578 A1Ppc Broadband, Inc.
- Amplification Apparatus, Device, and Method for a Tap of a Cable Communication Network11 May 2023US 2023/0144817 A1Intel Corporation
- Cable network system for bidirectional communication at an enhanced duplex frequency range17 Nov 2022US 2022/0368372 A1Ppc Broadband, Inc.
- Waveguide system comprising a scattering device for generating a second non-fundamental wave mode from a first non-fundamental wave mode24 Mar 2022US 2022/0094030 A1AT&T Intellectual Property I, L. P.
Most cited
By later US patents
- Backhaul link for distributed antenna system604US 9,113,347 B2AT&T Intellectual Property I, L. P. · 2015
- Repeater and methods for use therewith406US 9,608,692 B2AT&T Intellectual Property I, L. P. · 2017
- Guided wave couplers for coupling electromagnetic waves between a waveguide surface and a surface of a wire403US 9,692,101 B2AT&T Intellectual Property I, L. P. · 2017
- System and method for launching guided electromagnetic waves with impedance matching299US 10,305,192 B1AT&T Intellectual Property I, L. P. · 2019
- Backhaul link for distributed antenna system227US 9,119,127 B1AT&T Intellectual Property I, L. P. · 2015