H04M 2203/609
Secret communication
H04M2203/609 (Secret communication) appears on 146 US grants and 122 published applications in this corpus.
Search patents in H04M- Granted patents
- 146
- Published applications
- 122
- Assignees
- 90
- Inventors
- 291
- Latest grant
- 7 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 2 | 0 |
| 1995 | 3 | 0 |
| 1996 | 3 | 0 |
| 1997 | 4 | 0 |
| 1998 | 6 | 0 |
| 1999 | 4 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 2 |
| 2002 | 3 | 11 |
| 2003 | 2 | 6 |
| 2004 | 4 | 5 |
| 2005 | 9 | 10 |
| 2006 | 5 | 13 |
| 2007 | 4 | 1 |
| 2008 | 3 | 5 |
| 2009 | 3 | 1 |
| 2010 | 5 | 8 |
| 2011 | 5 | 1 |
| 2012 | 6 | 3 |
| 2013 | 6 | 4 |
| 2014 | 8 | 11 |
| 2015 | 5 | 2 |
| 2016 | 9 | 5 |
| 2017 | 9 | 6 |
| 2018 | 4 | 11 |
| 2019 | 7 | 2 |
| 2020 | 5 | 1 |
| 2021 | 4 | 3 |
| 2022 | 0 | 1 |
| 2023 | 2 | 8 |
| 2024 | 3 | 0 |
| 2025 | 2 | 1 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Coordinating conveying a reason for a call from a user device7 Oct 2025US 12,438,980 B2Journey.ai
- Real time switching from unsecured to secured signaling channel7 Jan 2025US 12,192,401 B2Avaya Management L.P.
- Device, system and method for changing communication infrastructures based on call security level3 Sep 2024US 12,081,556 B2Motorola Solutions, Inc.
- Utilizing a mnemonic for communicating sensitive data21 May 2024US 11,989,319 B2International Business Machines Corporation
- Managing communication privacy in encroaching environments23 Apr 2024US 11,968,230 B2International Business Machines Corporation
- Calling line identity spoof detection in the presence of repeat calls30 Apr 2026US 2026/0122174 A1British Telecommunications Public Ltd.Co.
- Secure call processing via proxy5 Jun 2025US 2025/0184431 A1Sycurio Limited
- Receiving a reason for a call at a user device21 Sep 2023US 2023/0300243 A1Journey.ai
- Real time switching from unsecured to secured signaling channel14 Sep 2023US 2023/0291828 A1Avaya Management L.P.
- Conveying a reason for a call to a user device7 Sep 2023US 2023/0283713 A1Journey.ai
Most cited
By later US patents
- Method and system for establishing and maintaining user-controlled anonymous communications385US 5,884,272 AWalker Asset Management Limited Partnership · 1999
- Method and apparatus for providing secure wireless communication365US 7,496,347 B2Velocita Wireless LLC · 2009
- Method and apparatus for anonymous voice communication using an online data service288US 5,818,836 A1998
- Anonymous interactive telephone system276US 5,361,295 AThe Telephone Connection · 1994
- Transaction authentication for 1-way wireless financial messaging units258US 6,105,006 A2000