Integration of cellular phone detection and reporting into a prison telephone system
US-12199748-B2 · Jan 14, 2025 · US
Eavesdropping prevention - indication of insecurity of line or network
Eavesdropping prevention - indication of insecurity of line or network · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04M3/205 |
| Official title | {Eavesdropping prevention - indication of insecurity of line or network} |
| Display label | Eavesdropping prevention - indication of insecurity of line or network |
| Total patents | 60 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 2 |
| 2016 | 11 |
| 2017 | 4 |
| 2018 | 9 |
| 2019 | 8 |
| 2020 | 9 |
| 2021 | 3 |
| 2022 | 5 |
| 2023 | 6 |
| 2024 | 1 |
| 2025 | 2 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Real time switching from unsecured to secured signaling channel
US-12192401-B2 · Jan 7, 2025 · US
Integration of cellular phone detection and reporting into a prison telephone system
US-2024014920-A1 · Jan 11, 2024 · US
System and method for handling data transfers
US-RE49721-E · Nov 7, 2023 · US
System and method for detecting and controlling contraband devices in a controlled environment
US-11800006-B2 · Oct 24, 2023 · US
System and method for detecting and locating contraband devices in a secure environment
US-11778417-B2 · Oct 3, 2023 · US
Real time switching from unsecured to secured signaling channel
US-2023291828-A1 · Sep 14, 2023 · US
Integration of cellular phone detection and reporting into a prison telephone system
US-11757560-B2 · Sep 12, 2023 · US
System and method for detecting and locating contraband devices in a secure environment
US-2023022557-A1 · Jan 26, 2023 · US
System and method for detecting and locating contraband devices in a secure environment
US-11418910-B2 · Aug 16, 2022 · US
System and method for detecting and locating contraband devices in a secure environment
US-11405750-B2 · Aug 2, 2022 · US
Integration of cellular phone detection and reporting into a prison telephone system
US-2022231781-A1 · Jul 21, 2022 · US
System and method for detecting and controlling contraband devices in a controlled environment
US-2022150343-A1 · May 12, 2022 · US
Integration of cellular phone detection and reporting into a prison telephone system
US-11258530-B2 · Feb 22, 2022 · US
System and method for detecting and controlling contraband devices in a controlled environment
US-11178273-B2 · Nov 16, 2021 · US
System and method for handling data transfers
US-RE48679-E · Aug 10, 2021 · US
Method for encrypted call and terminal
US-10972438-B2 · Apr 6, 2021 · US
System and method for detecting and controlling contraband devices in a controlled environment
US-2020336586-A1 · Oct 22, 2020 · US
Systems and methods for protecting users
US-10805012-B1 · Oct 13, 2020 · US
System and method for detecting and locating contraband devices in a secure environment
US-2020267500-A1 · Aug 20, 2020 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04M3/205?
- CPC H04M3/205 is the Cooperative Patent Classification code for “Eavesdropping prevention - indication of insecurity of line or network.”
- How many patents are filed under CPC H04M3/205 (Eavesdropping prevention - indication of insecurity of line or network)?
- Our database includes 60 publications tagged with this CPC code.
- Is patent activity under CPC H04M3/205 growing?
- Publication counts under this code: 1 in 2024 vs 2 in 2025 (latest complete years).