H04W 4/10
Push-to-talk [ptt] or push-on-call services
Official title: Push-to-Talk [PTT] or Push-On-Call services
H04W4/10 (Push-to-talk [ptt] or push-on-call services) appears on 1,794 US grants and 2,041 published applications in this corpus.
Search patents in H04W- Granted patents
- 1,794
- Published applications
- 2,041
- Assignees
- 428
- Inventors
- 2,968
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 4 | 0 |
| 1991 | 3 | 0 |
| 1992 | 10 | 0 |
| 1993 | 10 | 0 |
| 1994 | 7 | 0 |
| 1995 | 8 | 0 |
| 1996 | 12 | 0 |
| 1997 | 8 | 0 |
| 1998 | 8 | 0 |
| 1999 | 7 | 0 |
| 2000 | 2 | 0 |
| 2001 | 3 | 0 |
| 2002 | 3 | 30 |
| 2003 | 3 | 27 |
| 2004 | 10 | 35 |
| 2005 | 19 | 104 |
| 2006 | 34 | 185 |
| 2007 | 32 | 147 |
| 2008 | 35 | 122 |
| 2009 | 63 | 85 |
| 2010 | 113 | 85 |
| 2011 | 98 | 45 |
| 2012 | 82 | 49 |
| 2013 | 94 | 77 |
| 2014 | 109 | 91 |
| 2015 | 100 | 107 |
| 2016 | 109 | 95 |
| 2017 | 103 | 113 |
| 2018 | 113 | 117 |
| 2019 | 128 | 102 |
| 2020 | 126 | 115 |
| 2021 | 88 | 77 |
| 2022 | 70 | 68 |
| 2023 | 54 | 58 |
| 2024 | 44 | 44 |
| 2025 | 47 | 34 |
| 2026 | 25 | 29 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Multi-source audio broadcast to an audio sink device8 Sep 2026US 12,730,604 B2Harman International Industries, Incorporated
- Communications networks using situational inference1 Sep 2026US 12,726,795 B2Catalyst Communications Technologies, Inc.
- System and method for reducing the prevalence of delirium in patients in an isolating healthcare environment18 Aug 2026US 12,708,735 B2VoiceLove LLC
- Push-to-Talk communications using a web application18 Aug 2026US 12,712,933 B2Science Arts, Inc.
- Support of quality of service for V2X transmissions11 Aug 2026US 12,706,855 B2Panasonic Intellectual Property Corporation of America
- Adaptive data rates for push-to-talk transmissions10 Sep 2026US 2026/0270656 A1
- Surveying wireless network infrastructure for worksites20 Aug 2026US 2026/0246548 A1
- Management apparatus, wireless mobile station configured for communication20 Aug 2026US 2026/0247110 A1JVCKENWOOD Corporation
- System and method for ai surveillance13 Aug 2026US 2026/0237212 A1
- Method and system for sharing location information in remote ambient call13 Aug 2026US 2026/0238965 A1Samsung Electronics Co., Ltd.
Most cited
By later US patents
- Multifunctional world wide walkie talkie, a tri-frequency cellular-satellite wireless instant messenger computer and network for establishing global wireless volp quality of service (qos) communications, unified messaging, and video conferencing via the internet1,246US 6,763,226 B1Computer Science Central, Inc. · 2004
- Method and system for interactive home monitoring478US 8,744,523 B2AT&T Intellectual Property I, L. P. · 2014
- System and method for providing group communication services in an existing communication system417US 6,477,150 B1QUALCOMM Incorporated · 2002
- System and method for providing resource sharing, synchronizing, media coordination, transcoding, and traffic management in a vehicular environment380US 9,083,581 B1Cisco Technology, Inc. · 2015
- Group location and route sharing system for communication units in a trunked communication system371US 6,885,874 B2Motorola, Inc. · 2005