H04M 3/42331
Direct inward dialling
Official title: {Direct inward dialling}
H04M3/42331 (Direct inward dialling) appears on 45 US grants and 39 published applications in this corpus.
Search patents in H04M- Granted patents
- 45
- Published applications
- 39
- Assignees
- 35
- Inventors
- 84
- Latest grant
- 25 Jul 2023
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 5 |
| 2003 | 1 | 4 |
| 2004 | 3 | 1 |
| 2005 | 2 | 0 |
| 2006 | 1 | 3 |
| 2007 | 3 | 5 |
| 2008 | 0 | 5 |
| 2009 | 1 | 0 |
| 2010 | 1 | 6 |
| 2011 | 3 | 0 |
| 2012 | 5 | 1 |
| 2013 | 4 | 2 |
| 2014 | 4 | 1 |
| 2015 | 2 | 2 |
| 2016 | 2 | 0 |
| 2017 | 2 | 1 |
| 2018 | 1 | 0 |
| 2019 | 0 | 1 |
| 2020 | 2 | 1 |
| 2021 | 1 | 0 |
| 2022 | 1 | 0 |
| 2023 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- System and method for flagging and decommissioning compromised telephone numbers prior to use for outbound calling25 Jul 2023US 11,711,461 B1
- Nurse call system29 Nov 2022US 11,515,034 B2Aiphone Co., Ltd.
- Emergency assistance calling for voice over IP communications systems9 Nov 2021US 11,172,064 B2Voip-Pal. Com, Inc.
- Direct inward dialing pool lease for originating and terminating services in a unified communication platform22 Dec 2020US 10,873,668 B1Fuze, Inc.
- Direct inward dialing pool lease for originating and terminating services in a unified communication platform7 Jul 2020US 10,708,441 B1Fuze, Inc.
- System and procedure for real-time hybrid voip connections2 Nov 2023US 2023/0353682 A1Whisbi Technologies S.L.
- Nurse call system13 Aug 2020US 2020/0258619 A1Aiphone Co., Ltd.
- Dialing PBX Extensions From Cell Phone9 May 2019US 2019/0141187 A1Xcast Labs, Inc.
- Emergency assistance calling for voice over ip communications systems18 May 2017US 2017/0142256 A1Voip-Pal. Com, Inc.
- Methods and systems for providing a mobile office phone17 Dec 2015US 2015/0365533 A1Kool Telecom Ltd.
Most cited
By later US patents
- Personal desktop router65US 6,148,074 AGenesys Telecommunications Laboratories, Inc. · 2000
- Call and data correspondence in a call-in center employing virtual restructuring for computer telephony integrated functionality53US 6,735,298 B2Genesys Telecommunications Laboratoiries, Inc. · 2004
- Call and data correspondence in a call-in center employing virtual restructuring for computer telephony integrated functionality45US 6,480,600 B1Genesys Telecommunications Laboratories, Inc. · 2002
- Method and apparatus for communicating with one of plural devices associated with a single telephone number37US 7,305,079 B1Ascendent Telecommunications, Inc. · 2007
- Method for handling incominc calls directed to a virtual communication service subscriber via a shared line system29US 6,870,835 B1AT&T Corp. · 2005