H04M 3/205
Eavesdropping prevention - indication of insecurity of line or network
Official title: {Eavesdropping prevention - indication of insecurity of line or network}
H04M3/205 (Eavesdropping prevention - indication of insecurity of line or network) appears on 73 US grants and 57 published applications in this corpus.
Search patents in H04M- Granted patents
- 73
- Published applications
- 57
- Assignees
- 42
- Inventors
- 89
- Latest grant
- 14 Jan 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 2 | 1 |
| 2005 | 3 | 2 |
| 2006 | 1 | 2 |
| 2007 | 1 | 0 |
| 2008 | 1 | 1 |
| 2009 | 1 | 1 |
| 2010 | 2 | 4 |
| 2011 | 2 | 2 |
| 2012 | 3 | 4 |
| 2013 | 2 | 4 |
| 2014 | 3 | 4 |
| 2015 | 4 | 0 |
| 2016 | 6 | 7 |
| 2017 | 2 | 4 |
| 2018 | 10 | 5 |
| 2019 | 5 | 6 |
| 2020 | 5 | 4 |
| 2021 | 3 | 0 |
| 2022 | 3 | 3 |
| 2023 | 5 | 2 |
| 2024 | 0 | 1 |
| 2025 | 2 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Integration of cellular phone detection and reporting into a prison telephone system14 Jan 2025US 12,199,748 B2Global Tel'Link Corporation
- Real time switching from unsecured to secured signaling channel7 Jan 2025US 12,192,401 B2Avaya Management L.P.
- System and method for handling data transfers7 Nov 2023US RE49,721 E1BlackBerry Limited
- System and method for detecting and controlling contraband devices in a controlled environment24 Oct 2023US 11,800,006 B2Global Tel'Link Corporation
- System and method for detecting and locating contraband devices in a secure environment3 Oct 2023US 11,778,417 B2Global Tel'Link Corporation
- Integration of cellular phone detection and reporting into a prison telephone system11 Jan 2024US 2024/0014920 A1Global Tel'Link Corporation
- Real time switching from unsecured to secured signaling channel14 Sep 2023US 2023/0291828 A1Avaya Management L.P.
- System and method for detecting and locating contraband devices in a secure environment26 Jan 2023US 2023/0022557 A1Global Tel'Link Corporation
- Mutual disabling unit for multiple phones13 Oct 2022US 2022/0329688 A1High Sec Labs Ltd.
- Integration of cellular phone detection and reporting into a prison telephone system21 Jul 2022US 2022/0231781 A1Global Tel'Link Corporation
Most cited
By later US patents
- Method and apparatus for delivering secured telephone service in hybrid coaxial cable network147US 5,469,495 AU S West Advanced Technologies, Inc. · 1995
- Method for determining the security status of transmissions in a telecommunications network134US 6,959,184 B1Lucent Technologies Inc. · 2005
- Lockout device for preventing telephone eavesdropping from an extension device, and method89US 5,832,057 A1998
- Method and apparatus for delivering secured telephony service in a hydrid coaxial cable network75US 5,559,858 AU S West Advanced Technologies, Inc. · 1996
- System and method for handling data transfers44US 7,734,284 B2Research In Motion Limited · 2010