Routing To Survivable Distribution Group
US-2026067402-A1 · Mar 5, 2026 · US
Indicating faults in circuits or apparatus
Indicating faults in circuits or apparatus · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04M3/08 |
| Official title | Indicating faults in circuits or apparatus |
| Display label | Indicating faults in circuits or apparatus |
| Total patents | 58 |
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 | 12 |
| 2016 | 13 |
| 2017 | 10 |
| 2018 | 6 |
| 2019 | 7 |
| 2020 | 4 |
| 2021 | 2 |
| 2023 | 2 |
| 2025 | 1 |
| 2026 | 1 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Contact center deflection system
US-2025193311-A1 · Jun 12, 2025 · US
Method and apparatus for providing information on an emergency call
US-11800012-B2 · Oct 24, 2023 · US
Method and apparatus for providing information on an emergency call
US-2023291834-A1 · Sep 14, 2023 · US
Conferencing environment monitoring
US-11102022-B2 · Aug 24, 2021 · US
Copper impairment testing and remediation in digital subscriber line (DSL) service
US-10931817-B2 · Feb 23, 2021 · US
Conferencing environment monitoring
US-2020351112-A1 · Nov 5, 2020 · US
Call reconstruction sequenced application
US-10742800-B2 · Aug 11, 2020 · US
Copper impairment testing and remediation in digital subscriber line (dsl) service
US-2020162606-A1 · May 21, 2020 · US
Call reconstruction sequenced application
US-2020028962-A1 · Jan 23, 2020 · US
Enhanced user experience for voice communication
US-10516777-B1 · Dec 24, 2019 · US
Call reconstruction sequenced application
US-10469655-B2 · Nov 5, 2019 · US
Copper impairment testing and remediation in digital subscriber line (DSL) service
US-10455082-B2 · Oct 22, 2019 · US
Call reconstruction sequenced application
US-2019297184-A1 · Sep 26, 2019 · US
Copper impairment testing and remediation in digital subscriber line (dsl) service
US-2019245966-A1 · Aug 8, 2019 · US
Line fault classification
US-10277272-B2 · Apr 30, 2019 · US
Line fault localisation
US-10194020-B2 · Jan 29, 2019 · US
Quality-dependent playback of recordings
US-10154133-B2 · Dec 11, 2018 · US
Coaching portal and methods based on behavioral assessment data
US-10104233-B2 · Oct 16, 2018 · US
Reverse power supply method and reverse powering equipment and system
US-10091364-B2 · Oct 2, 2018 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04M3/08?
- CPC H04M3/08 is the Cooperative Patent Classification code for “Indicating faults in circuits or apparatus.”
- How many patents are filed under CPC H04M3/08 (Indicating faults in circuits or apparatus)?
- Our database includes 58 publications tagged with this CPC code.
- Is patent activity under CPC H04M3/08 growing?
- Publication counts under this code: 2 in 2023 vs 1 in 2025 (latest complete years).