Easy dsl signal detector
US-2025247129-A1 · Jul 31, 2025 · US
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Circuits for by-passing of ringing signals
Circuits for by-passing of ringing signals · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04B3/42 |
| Official title | Circuits for by-passing of ringing signals |
| Display label | Circuits for by-passing of ringing signals |
| Total patents | 16 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is rapidly declining.
| Year | Patents |
|---|---|
| 2018 | 2 |
| 2019 | 6 |
| 2020 | 3 |
| 2022 | 2 |
| 2023 | 1 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Easy DSL signal detector
US-12284000-B2 · Apr 22, 2025 · US
Easy DSL Signal Detector
US-2023120458-A1 · Apr 20, 2023 · US
Method, system and apparatus for suppressing controller area network bus ringing
US-11539548-B2 · Dec 27, 2022 · US
Method, system and apparatus for suppressing controller area network bus ringing
US-2022094567-A1 · Mar 24, 2022 · US
Ringing suppressor circuit
US-10693451-B2 · Jun 23, 2020 · US
Systems and methods for suppressing radiofrequency noise from a modem
US-10680674-B2 · Jun 9, 2020 · US
Ringing suppression circuit
US-10666320-B2 · May 26, 2020 · US
Systems and methods for suppressing radiofrequency noise from a modem
US-2019363753-A1 · Nov 28, 2019 · US
Ringing suppressor circuit
US-2019288680-A1 · Sep 19, 2019 · US
Ringing suppression circuit
US-10419071-B2 · Sep 17, 2019 · US
Ringing suppression circuit
US-2019158143-A1 · May 23, 2019 · US
Ringing suppression circuit
US-2019158144-A1 · May 23, 2019 · US
Ringing suppression circuit
US-2019097681-A1 · Mar 28, 2019 · US
Ringing suppression circuit
US-10128825-B2 · Nov 13, 2018 · US
Ringing suppression circuit
US-2018248542-A1 · Aug 30, 2018 · US