H04M 7/00
Arrangements for interconnection between switching centres
H04M7/00 (Arrangements for interconnection between switching centres) appears on 12,022 US grants and 11,368 published applications in this corpus.
Search patents in H04M- Granted patents
- 12,022
- Published applications
- 11,368
- Assignees
- 2,569
- Inventors
- 16,995
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 6 | 0 |
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 3 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 6 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 4 | 0 |
| 1986 | 6 | 0 |
| 1987 | 4 | 0 |
| 1988 | 9 | 0 |
| 1989 | 4 | 0 |
| 1990 | 12 | 0 |
| 1991 | 11 | 0 |
| 1992 | 11 | 0 |
| 1993 | 21 | 0 |
| 1994 | 25 | 0 |
| 1995 | 33 | 0 |
| 1996 | 73 | 0 |
| 1997 | 88 | 0 |
| 1998 | 139 | 0 |
| 1999 | 231 | 0 |
| 2000 | 215 | 0 |
| 2001 | 281 | 161 |
| 2002 | 348 | 571 |
| 2003 | 326 | 603 |
| 2004 | 448 | 596 |
| 2005 | 348 | 660 |
| 2006 | 518 | 752 |
| 2007 | 392 | 841 |
| 2008 | 433 | 776 |
| 2009 | 470 | 599 |
| 2010 | 549 | 560 |
| 2011 | 540 | 532 |
| 2012 | 709 | 432 |
| 2013 | 766 | 501 |
| 2014 | 697 | 476 |
| 2015 | 643 | 527 |
| 2016 | 592 | 512 |
| 2017 | 542 | 415 |
| 2018 | 470 | 351 |
| 2019 | 465 | 307 |
| 2020 | 390 | 314 |
| 2021 | 296 | 224 |
| 2022 | 244 | 200 |
| 2023 | 249 | 172 |
| 2024 | 188 | 135 |
| 2025 | 142 | 92 |
| 2026 | 59 | 59 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04M 7/006Networks other than pstn/isdn providing telephone service5,890
- H04M 7/12Arrangements for interconnection between switching centres: for working between exchanges having different3,748
- H04M 7/0024Services and arrangements where telephone services are combined with data services3,224
- H04M 7/0012Details of application programming interfaces [api] for telephone networks616
- H04M 7/009In systems involving pbx or kts networks402
- H04M 7/0003Interconnection between telephone networks and data networks255
- H04M 7/06Arrangements for interconnection between switching centres: using auxiliary connections for control or217
- H04M 7/0096Trunk circuits120
Recent patents
- Control of communication services management6 Oct 2026US 12,756,778 B2G.S. Consulting & Research Correnet Ltd
- Dynamic direction of incoming calls29 Sep 2026US 12,750,442 B18x8, Inc.
- Server apparatus, telephone connection method and telephone connection program22 Sep 2026US 12,744,846 B2NEC Platforms, Ltd.
- System and method for restricting bit rate for enhanced voice services (EVS)22 Sep 2026US 12,744,850 B2Jio Platforms Limited
- Verifying subscriber information for device-based authentication15 Sep 2026US 12,739,255 B2TeleSign Corporation
- Artificial intelligence (ai) based network management1 Oct 2026US 2026/0304147 A1Rakuten Mobile, Inc.
- Voice over internet protocol (voip) transmit redundancy17 Sep 2026US 2026/0281170 A1QUALCOMM Incorporated
- Call classification through analysis of dtmf events17 Sep 2026US 2026/0281227 A1Pindrop Security, Inc.
- Cell Phone Travel Application (APP) to Replace Hotel Guest Room Push Button Phones17 Sep 2026US 2026/0281251 A1
- Compute systems and processes for video messages10 Sep 2026US 2026/0270347 A1Let's Roll Marketing LLC.
Most cited
By later US patents
- Personal communications internetworking1,899US 5,742,905 ABell Communications Research, Inc. · 1998
- Method and device for obtaining playlist content over a network1,821US 8,045,952 B2Horsham Enterprises, LLC · 2011
- Unified messaging system and method1,307US 5,608,786 AAlphanet Telecom Inc. · 1997
- System, method and article of manufacture for communications utilizing calling, plans in a hybrid network1,175US 5,867,495 AMCI Communications Corporations · 1999
- System and method for instant VoIP messaging1,106US 7,535,890 B2Ayalogic, Inc. · 2009