H04M 3/42382
Text-based messaging services in telephone networks such as pstn/isdn
Official title: {Text-based messaging services in telephone networks such as PSTN/ISDN, e.g. User-to-User Signalling or Short Message Service for fixed networks}
H04M3/42382 (Text-based messaging services in telephone networks such as pstn/isdn) appears on 1,334 US grants and 1,411 published applications in this corpus.
Search patents in H04M- Granted patents
- 1,334
- Published applications
- 1,411
- Assignees
- 497
- Inventors
- 2,199
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 2 | 0 |
| 2000 | 5 | 0 |
| 2001 | 9 | 3 |
| 2002 | 6 | 30 |
| 2003 | 10 | 47 |
| 2004 | 19 | 53 |
| 2005 | 21 | 46 |
| 2006 | 35 | 64 |
| 2007 | 28 | 67 |
| 2008 | 22 | 48 |
| 2009 | 36 | 55 |
| 2010 | 27 | 48 |
| 2011 | 44 | 66 |
| 2012 | 75 | 70 |
| 2013 | 95 | 85 |
| 2014 | 118 | 68 |
| 2015 | 78 | 94 |
| 2016 | 88 | 87 |
| 2017 | 106 | 74 |
| 2018 | 87 | 71 |
| 2019 | 83 | 46 |
| 2020 | 63 | 59 |
| 2021 | 79 | 90 |
| 2022 | 68 | 40 |
| 2023 | 40 | 46 |
| 2024 | 42 | 25 |
| 2025 | 30 | 20 |
| 2026 | 14 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Method and system for SMS communication in 3GPP networks21 Jul 2026US 12,689,874 B2Telefonaktiebolaget LM Ericsson (publ)
- System and method for a multi-channel notification service24 Sep 2026US 2026/0292039 A1Twilio Inc.
- Inbound and outbound communication session and call control6 Aug 2026US 2026/0230556 A1MBTE Holdings Sweden AB
- System and method of connecting a caller to a recipient based on the recipients status and relationship to the caller6 Aug 2026US 2026/0230557 A1
- Methods for determining agent capacity for managing contact chat interactions2 Jul 2026US 2026/0189658 A1Afiniti, Ltd.
- Text data transmission-reception system, shared terminal, and method of processing information25 Jun 2026US 2026/0181030 A1Ricoh Company, Ltd.
Most cited
By later US patents
- System and method for graphically displaying and navigating through an interactive voice response menu529US 5,802,526 AMicrosoft Corporation · 1998
- Method and system for wireless instant messaging512US 7,058,036 B1Sprint Spectrum L. P. · 2006
- System and process for allowing wireless messaging487US 6,134,432 ABulletin.net, Inc. · 2000
- Virtual assistant aided communication with 3rd party service in a communication session421US 9,578,173 B2Apple Inc. · 2017
- System and method for providing subscriber-initiated information over the short message service (SMS) or a microbrowser414US 6,560,456 B1Openwave Systems Inc. · 2003