H04M 3/4286
Notifying a held subscriber when his held call is removed from hold
Official title: {Notifying a held subscriber when his held call is removed from hold}
H04M3/4286 (Notifying a held subscriber when his held call is removed from hold) appears on 62 US grants and 66 published applications in this corpus.
Search patents in H04M- Granted patents
- 62
- Published applications
- 66
- Assignees
- 34
- Inventors
- 168
- Latest grant
- 18 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 2 |
| 2005 | 1 | 2 |
| 2006 | 1 | 2 |
| 2007 | 1 | 2 |
| 2008 | 0 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 2 |
| 2011 | 1 | 1 |
| 2012 | 2 | 1 |
| 2013 | 3 | 1 |
| 2014 | 1 | 2 |
| 2015 | 3 | 5 |
| 2016 | 3 | 4 |
| 2017 | 4 | 3 |
| 2018 | 6 | 3 |
| 2019 | 1 | 2 |
| 2020 | 3 | 6 |
| 2021 | 11 | 7 |
| 2022 | 5 | 5 |
| 2023 | 6 | 8 |
| 2024 | 4 | 4 |
| 2025 | 5 | 2 |
By publication year. Applications have been published since 2001.
Recent patents
- Call prompt method, call device, readable storage medium, and chip system18 Nov 2025US 12,477,060 B2Huawei Technologies Co., Ltd.
- Methods and apparatus for bypassing holds2 Sep 2025US 12,407,776 B2Google Inc.
- Systems and methods for the asynchronous detection of on hold time in multi-channel calls1 Jul 2025US 12,348,674 B2Outbound AI Inc.
- Automated calling system18 Mar 2025US 12,254,883 B2Google Inc.
- Enhanced call waiting for user equipment4 Feb 2025US 12,219,091 B2T-Mobile Innovations LLC
- Methods and apparatus for bypassing holds18 Dec 2025US 2025/0385968 A1Google Inc.
- Captioned telephone service system for detecting and alerting peers return to call6 Feb 2025US 2025/0047783 A1Mezmo Corporation
- Methods and apparatus for bypassing holds10 Oct 2024US 2024/0340373 A1Google Inc.
- Automated calling system8 Aug 2024US 2024/0265923 A1Google Inc.
- Management of an on-hold call based on a user's participation in an activity on their endpoint1 Feb 2024US 2024/0040034 A1Avaya Management L.P.
Most cited
By later US patents
- Telephone on-hold response system46US 6,122,346 A2000
- Answer on hold notification39US 7,881,450 B1Avaya Inc. · 2011
- Method and apparatus for managing incoming and outgoing calls at an endpoint placed on hold27US 7,006,618 B1Cisco Technology, Inc. · 2006
- Next agent available notification23US 8,411,843 B1Avaya Inc. · 2013
- On-hold processing for telephonic systems19US 8,619,965 B1Abraham & Son · 2013