Adjustable attenuation wrap plug
US-2021359718-A1 · Nov 18, 2021 · US
Testing attenuation (H04B3/466 takes precedence)
Testing attenuation (H04B3/466 takes precedence) · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04B3/48 |
| Official title | Testing attenuation (H04B3/466 takes precedence) |
| Display label | Testing attenuation (H04B3/466 takes precedence) |
| Total patents | 99 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2015 | 9 |
| 2016 | 9 |
| 2017 | 10 |
| 2018 | 6 |
| 2019 | 11 |
| 2020 | 10 |
| 2021 | 10 |
| 2022 | 11 |
| 2023 | 11 |
| 2024 | 7 |
| 2025 | 4 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Test system and test method
US-2021135709-A1 · May 6, 2021 · US
Ethernet link transmit power method based on on-chip detected alien crosstalk feedback
US-10985801-B1 · Apr 20, 2021 · US
Method and measuring system for monitoring a line for changed ambient conditions
US-2021063249-A1 · Mar 4, 2021 · US
Radio communication system, radio communication apparatus, radio communication method, and non-transitory computer readable medium
US-2021036787-A1 · Feb 4, 2021 · US
Power Line Communication Method and Apparatus
US-2020412410-A1 · Dec 31, 2020 · US
Measurement method
US-2020382161-A1 · Dec 3, 2020 · US
Methods and apparatus for launching or receiving electromagnetic waves
US-10833727-B2 · Nov 10, 2020 · US
Communication over a communication line
US-10727900-B2 · Jul 28, 2020 · US
Systems and methods for locating a single reflection on a transmission line
US-10680708-B2 · Jun 9, 2020 · US
Network Topology Determining Method, Apparatus, and System
US-2020162605-A1 · May 21, 2020 · US
Method, controller and system for determining the location of a train on a track or of a broken rail of a track
US-10647338-B2 · May 12, 2020 · US
Measurement method, diagnostic device for diagnosing transmission line, detection device, and linear sensor device
US-2020103456-A1 · Apr 2, 2020 · US
Methods and apparatus for launching or receiving electromagnetic waves
US-2020106477-A1 · Apr 2, 2020 · US
Systems and methods for line attenuation testing
US-10541746-B2 · Jan 21, 2020 · US
Transmission line including first and second signal conductor patterns separated by a third non-signal conductor pattern with specified dimensional relationships there between
US-10490873-B2 · Nov 26, 2019 · US
Method for measuring interference to CM, apparatus, and system
US-10461806-B2 · Oct 29, 2019 · US
Methods and apparatus for coupling an electromagnetic wave onto a transmission medium
US-10454151-B2 · Oct 22, 2019 · US
Broadband radio frequency data communication system using twisted pair wiring
US-10374644-B2 · Aug 6, 2019 · US
Method for Measuring Interference to CM, Apparatus, and System
US-2019181912-A1 · Jun 13, 2019 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04B3/48?
- CPC H04B3/48 is the Cooperative Patent Classification code for “Testing attenuation (H04B3/466 takes precedence).”
- How many patents are filed under CPC H04B3/48 (Testing attenuation (H04B3/466 takes precedence))?
- Our database includes 99 publications tagged with this CPC code.
- Is patent activity under CPC H04B3/48 growing?
- Publication counts under this code: 7 in 2024 vs 4 in 2025 (latest complete years).