H04B 3/48
Testing attenuation
Official title: Testing attenuation (H04B3/466 takes precedence)
H04B3/48 (Testing attenuation) appears on 90 US grants and 74 published applications in this corpus.
Search patents in H04B- Granted patents
- 90
- Published applications
- 74
- Assignees
- 71
- Inventors
- 180
- Latest grant
- 27 Jan 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 3 |
| 2004 | 2 | 0 |
| 2005 | 2 | 4 |
| 2006 | 2 | 1 |
| 2007 | 0 | 4 |
| 2008 | 2 | 1 |
| 2009 | 0 | 2 |
| 2010 | 4 | 1 |
| 2011 | 3 | 3 |
| 2012 | 1 | 2 |
| 2013 | 3 | 1 |
| 2014 | 2 | 3 |
| 2015 | 6 | 4 |
| 2016 | 3 | 5 |
| 2017 | 5 | 7 |
| 2018 | 3 | 3 |
| 2019 | 7 | 4 |
| 2020 | 5 | 4 |
| 2021 | 2 | 8 |
| 2022 | 8 | 3 |
| 2023 | 6 | 6 |
| 2024 | 5 | 3 |
| 2025 | 2 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Boost metric based pre-EQ limiting systems and methods27 Jan 2026US 12,537,726 B2Avago Technologies International Sales Pte. Limited
- Method, circuit arrangement, and system for identifying impedance changes in a signal line23 Sep 2025US 12,425,071 B2Robert Bosch GmbH
- Power line data transceiver29 Apr 2025US 12,289,139 B2Shenzhen Yinwang Intelligent Technologies Co., Ltd.
- Mapping, characterization and localization methods and systems for communication networks19 Nov 2024US 12,149,412 B2Neuratech Communications Inc.
- Photovoltaic system, photovoltaic unit grouping method, computing device, and storage medium29 Oct 2024US 12,132,444 B2Huawei Digital Power Technologies Co., Ltd.
- Boost metric based pre-eq limiting systems and methods21 May 2026US 2026/0142857 A1Avago Technologies International Sales Pte. Limited
- Digital twin of physical layer carrier data9 Jan 2025US 2025/0016061 A1Nokia Solutions and Networks Oy
- Boost metric based pre-eq limiting systems and methods15 Aug 2024US 2024/0275647 A1Avago Technologies International Sales Pte. Limited
- Method, circuit arrangement, and system for identifying impedance changes in a signal line27 Jun 2024US 2024/0214030 A1Robert Bosch GmbH
- System for Monitoring the Status of a Line in an Energy Chain13 Jun 2024US 2024/0192260 A1
Most cited
By later US patents
- Methods and apparatus for coupling an electromagnetic wave onto a transmission medium188US 10,454,151 B2AT&T Intellectual Property I, L. P. · 2019
- Automatic gain control configuration for a wideband distributed antenna system92US 8,428,510 B2ADC Telecommunications, Inc. · 2013
- Power line communications analyzer48US 5,812,557 AEchelon Corporation · 1998
- Methods and apparatus for launching or receiving electromagnetic waves41US 10,833,727 B2AT&T Intellectual Property I, L. P. · 2020
- Method and apparatus for evaluating digital transmission systems37US 5,768,312 ALeader Electronics Corporation · 1998