H04M 3/42238
In systems with telephone lines with multiple users
Official title: {in systems with telephone lines with multiple users}
H04M3/42238 (In systems with telephone lines with multiple users) appears on 109 US grants and 114 published applications in this corpus.
Search patents in H04M- Granted patents
- 109
- Published applications
- 114
- Assignees
- 69
- Inventors
- 210
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1998 | 1 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 0 |
| 2002 | 0 | 2 |
| 2003 | 1 | 1 |
| 2004 | 2 | 0 |
| 2005 | 0 | 4 |
| 2006 | 2 | 1 |
| 2007 | 1 | 2 |
| 2008 | 1 | 10 |
| 2009 | 2 | 3 |
| 2010 | 3 | 9 |
| 2011 | 1 | 2 |
| 2012 | 4 | 6 |
| 2013 | 10 | 5 |
| 2014 | 13 | 8 |
| 2015 | 9 | 7 |
| 2016 | 3 | 10 |
| 2017 | 9 | 4 |
| 2018 | 5 | 4 |
| 2019 | 6 | 7 |
| 2020 | 9 | 6 |
| 2021 | 4 | 4 |
| 2022 | 6 | 3 |
| 2023 | 4 | 7 |
| 2024 | 5 | 5 |
| 2025 | 3 | 2 |
| 2026 | 2 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- System and method for a multi-channel notification service26 May 2026US 12,641,163 B2Twilio Inc.
- System and method of capturing, tracking, composing, analyzing and automating analog and digital interactions3 Mar 2026US 12,568,167 B2Nextiva, Inc.
- Electronic device for performing communication with counterpart by using assistance module, and control method thereof9 Sep 2025US 12,413,669 B2Samsung Electronics Co., Ltd.
- User-specific security credential bypass for shared device voicemail29 Jul 2025US 12,375,609 B2Zoom Communications, Inc.
- Voice message callback action enabling and disabling4 Mar 2025US 12,244,769 B2Zoom Communications, Inc.
- System and method for a multi-channel notification service24 Sep 2026US 2026/0292039 A1Twilio Inc.
- System and Method of Capturing, Tracking, Composing, Analyzing and Automating Analog and Digital Interactions9 Jul 2026US 2026/0197397 A1Nextiva, Inc.
- Security Credential Bypass For Shared Device Voicemail30 Oct 2025US 2025/0337841 A1Zoom Communications, Inc.
- Geography-Based Voice Message Assignment And Management22 May 2025US 2025/0168280 A1Zoom Communications, Inc.
- Indicating callers for incoming voice calls on a shared speech-enabled device5 Dec 2024US 2024/0406311 A1Google Inc.
Most cited
By later US patents
- Communications for multi-mode device82US 10,412,206 B1Amazon Technologies, Inc. · 2019
- Conference calls via an intelligent call waiting interface54US 7,412,050 B2AOL LLC, a Delaware Limited Liability Company · 2008
- Method for handling incoming calls on a pots telephone line to a user's premises43US 5,930,338 ASoloPoint, Inc. · 1999
- Virtual PBX37US 6,587,555 B1Z-Tel Technologies, Inc. · 2003
- Apparatus for providing a mobility adjunct for the public switched telephone network35US 5,771,465 ATelefonaktiebolaget LM Ericsson · 1998