H04M 7/0096
Trunk circuits
Official title: {Trunk circuits}
H04M7/0096 (Trunk circuits) appears on 120 US grants and 42 published applications in this corpus.
Search patents in H04M- Granted patents
- 120
- Published applications
- 42
- Assignees
- 90
- Inventors
- 204
- Latest grant
- 2 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 4 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 5 | 0 |
| 1983 | 3 | 0 |
| 1984 | 1 | 0 |
| 1985 | 3 | 0 |
| 1986 | 4 | 0 |
| 1987 | 3 | 0 |
| 1988 | 6 | 0 |
| 1989 | 2 | 0 |
| 1990 | 5 | 0 |
| 1991 | 3 | 0 |
| 1992 | 4 | 0 |
| 1993 | 2 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 2 | 0 |
| 1999 | 4 | 0 |
| 2000 | 2 | 0 |
| 2001 | 2 | 0 |
| 2002 | 5 | 3 |
| 2003 | 3 | 5 |
| 2004 | 6 | 3 |
| 2005 | 4 | 3 |
| 2006 | 5 | 2 |
| 2007 | 2 | 5 |
| 2008 | 0 | 0 |
| 2009 | 2 | 1 |
| 2010 | 4 | 1 |
| 2011 | 1 | 2 |
| 2012 | 0 | 0 |
| 2013 | 2 | 0 |
| 2014 | 1 | 0 |
| 2015 | 0 | 0 |
| 2016 | 0 | 0 |
| 2017 | 1 | 4 |
| 2018 | 2 | 1 |
| 2019 | 2 | 1 |
| 2020 | 1 | 1 |
| 2021 | 1 | 0 |
| 2022 | 0 | 2 |
| 2023 | 2 | 3 |
| 2024 | 3 | 2 |
| 2025 | 1 | 3 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Modular technologies for servicing telephony systems2 Jun 2026US 12,647,468 B2Cdw LLC
- Application programming interface (API)-based concurrent call path (CCP) provisioning17 Jun 2025US 12,335,441 B2Level 3 Communications, LLC
- Programmatical PSTN trunking for cloud hosted applications19 Nov 2024US 12,149,572 B2Level 3 Communications, LLC
- Application programming interface (API)-based concurrent call path (CCP) provisioning16 Jul 2024US 12,041,204 B2Level 3 Communications, LLC
- System for cloud-enabling a premise PBX30 Apr 2024US 11,973,902 B2Intermedia.net, Inc.
- Application programming interface (api)-based concurrent call path (ccp) provisioning16 Oct 2025US 2025/0323998 A1Level 3 Communications, LLC
- Systems and methods for voice communication routing13 Mar 2025US 2025/0088456 A1Infobip Ltd.
- Programmatical pstn trunking for cloud hosted applications27 Feb 2025US 2025/0071155 A1Level 3 Communications, LLC
- Application programming interface (api)-based concurrent call path (ccp) provisioning7 Nov 2024US 2024/0372948 A1Level 3 Communications, LLC
- Application programming interface (api)-based concurrent call path (ccp) provisioning25 Jan 2024US 2024/0031491 A1Level 3 Communications, LLC
Most cited
By later US patents
- Wireless backup telephone device216US 6,411,802 B1Bellsouth Intellectual Property Management Corporation · 2002
- Transparent inband signaling150US 5,267,305 AAmbassador College · 1993
- Telecommunications switch with improved redundancy134US 5,596,569 AExcel Corporation · 1997
- Solid state isolation device using opto-isolators105US 5,245,654 ACermetek Microelectronics, Inc. · 1993
- Self-diagnosis of loop start and ground start trunk interfaces90US 5,003,573 ARolm Systems · 1991