H04W 76/45
For push-to-talk [ptt] or push-to-talk over cellular [poc] services
Official title: for Push-to-Talk [PTT] or Push-to-Talk over cellular [PoC] services
H04W76/45 (For push-to-talk [ptt] or push-to-talk over cellular [poc] services) appears on 1,272 US grants and 1,493 published applications in this corpus.
Search patents in H04W- Granted patents
- 1,272
- Published applications
- 1,493
- Assignees
- 308
- Inventors
- 2,209
- Latest grant
- 22 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 | 5 | 34 |
| 2003 | 5 | 29 |
| 2004 | 11 | 37 |
| 2005 | 21 | 105 |
| 2006 | 36 | 188 |
| 2007 | 32 | 149 |
| 2008 | 35 | 135 |
| 2009 | 64 | 97 |
| 2010 | 118 | 95 |
| 2011 | 104 | 54 |
| 2012 | 88 | 50 |
| 2013 | 98 | 59 |
| 2014 | 102 | 54 |
| 2015 | 77 | 58 |
| 2016 | 64 | 47 |
| 2017 | 59 | 56 |
| 2018 | 47 | 49 |
| 2019 | 48 | 34 |
| 2020 | 43 | 41 |
| 2021 | 44 | 35 |
| 2022 | 28 | 24 |
| 2023 | 18 | 16 |
| 2024 | 13 | 18 |
| 2025 | 11 | 19 |
| 2026 | 9 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Methods and systems for switching push-to-talk mode to voice over IP22 Sep 2026US 12,745,321 B2T-Mobile USA, Inc.
- Communications networks using situational inference1 Sep 2026US 12,726,795 B2Catalyst Communications Technologies, Inc.
- Managing security-compromised communication devices in a talk group30 Jun 2026US 12,671,963 B2Motorola Solutions, Inc.
- System and method for varying verbosity of response in a group communication using artificial intelligence2 Jun 2026US 12,645,954 B2Motorola Solutions, Inc.
- Vehicle-to-vehicle communication system26 May 2026US 12,641,400 B2Polaris Industries Inc.
- Method and system for sharing location information in remote ambient call13 Aug 2026US 2026/0238965 A1Samsung Electronics Co., Ltd.
- Determining probability of successful push-to-talk call connection23 Jul 2026US 2026/0214749 A1Motorola Solutions, Inc.
- Method and apparatus for communication in communication system supporting multi-talker mission critical push-to-talk (mcptt)11 Jun 2026US 2026/0164504 A1Samsung Electronics Co., Ltd.
- Geofenced mission critical push-to-talk (mcptt) talk groups14 May 2026US 2026/0136433 A1
- Connecting disparate communication systems in response to emergency event7 May 2026US 2026/0129718 A1Intrado Life & Safety, Inc.
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
- 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
- Method/apparatus for an accelerated response to resource allocation requests in a CDMA push-to-talk system using a CDMA interconnect subsystem to route calls248US 5,983,099 AQUALCOMM Incorporated · 1999