Method and system to identify a source of signal impairment
US-10367683-B2 · Jul 30, 2019 · US
and using xDSL modems (xDSL line qualification H04M3/306)
and using xDSL modems (xDSL line qualification H04M3/306) · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04M3/304 |
| Official title | {and using xDSL modems (xDSL line qualification H04M3/306)} |
| Display label | and using xDSL modems (xDSL line qualification H04M3/306) |
| Total patents | 93 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is growing.
| Year | Patents |
|---|---|
| 2015 | 16 |
| 2016 | 21 |
| 2017 | 10 |
| 2018 | 8 |
| 2019 | 7 |
| 2020 | 4 |
| 2021 | 4 |
| 2022 | 4 |
| 2023 | 7 |
| 2024 | 6 |
| 2025 | 6 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Video streaming diagnostics
US-10356151-B2 · Jul 16, 2019 · US
Systems and methods for establishing a diagnostic transmission mode and communicating over the same
US-10264119-B2 · Apr 16, 2019 · US
Method and system for estimating crosstalk between electrical transmission lines
US-2019097682-A1 · Mar 28, 2019 · US
Line fault localisation
US-10194020-B2 · Jan 29, 2019 · US
Digital subscriber line profile selection method and apparatus
US-10142489-B2 · Nov 27, 2018 · US
Line fault localisation
US-2018278742-A1 · Sep 27, 2018 · US
Methods and systems for reducing crosstalk using sequential non-linear vectoring
US-10069533-B2 · Sep 4, 2018 · US
Systems and methods for establishing a diagnostic transmission mode and communicating over the same
US-2018249001-A1 · Aug 30, 2018 · US
Reducing the feedback overhead during crosstalk precoder initialization
US-10063278-B2 · Aug 28, 2018 · US
Digital adsl regenerator device with adaptive data forwarding
US-2018227142-A1 · Aug 9, 2018 · US
Systems and methods for establishing a diagnostic transmission mode and communicating over the same
US-9973624-B2 · May 15, 2018 · US
Randomization of crosstalk probing signals
US-9917617-B2 · Mar 13, 2018 · US
Systems and methods for establishing a diagnostic transmission mode and communicating over the same
US-9838531-B2 · Dec 5, 2017 · US
Methods and systems for reducing crosstalk using sequential non-linear vectoring
US-2017294940-A1 · Oct 12, 2017 · US
Methods and apparatus for operating an access network
US-9762463-B2 · Sep 12, 2017 · US
Inband spurious detection and processing within communication systems
US-2017063489-A1 · Mar 2, 2017 · US
Vectored DSL crosstalk cancellation
US-9584182-B2 · Feb 28, 2017 · US
Systems and methods for establishing a diagnostic transmission mode and communicating over the same
US-2017034343-A1 · Feb 2, 2017 · US
Methods and apparatus for operating an access network
US-2017026257-A1 · Jan 26, 2017 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04M3/304?
- CPC H04M3/304 is the Cooperative Patent Classification code for “and using xDSL modems (xDSL line qualification H04M3/306).”
- How many patents are filed under CPC H04M3/304 (and using xDSL modems (xDSL line qualification H04M3/306))?
- Our database includes 93 publications tagged with this CPC code.
- Is patent activity under CPC H04M3/304 growing?
- Publication counts under this code: 6 in 2024 vs 6 in 2025 (latest complete years).