H04W 4/90
Services for handling of emergency or hazardous situations
Official title: Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
H04W4/90 (Services for handling of emergency or hazardous situations) appears on 7,645 US grants and 9,207 published applications in this corpus.
Search patents in H04W- Granted patents
- 7,645
- Published applications
- 9,207
- Assignees
- 2,015
- Inventors
- 13,281
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 8 | 0 |
| 1997 | 11 | 0 |
| 1998 | 11 | 0 |
| 1999 | 11 | 0 |
| 2000 | 33 | 0 |
| 2001 | 31 | 13 |
| 2002 | 30 | 55 |
| 2003 | 26 | 46 |
| 2004 | 30 | 98 |
| 2005 | 26 | 94 |
| 2006 | 66 | 100 |
| 2007 | 52 | 147 |
| 2008 | 46 | 123 |
| 2009 | 59 | 184 |
| 2010 | 73 | 219 |
| 2011 | 114 | 228 |
| 2012 | 210 | 273 |
| 2013 | 297 | 457 |
| 2014 | 377 | 457 |
| 2015 | 443 | 595 |
| 2016 | 511 | 574 |
| 2017 | 596 | 586 |
| 2018 | 570 | 540 |
| 2019 | 632 | 611 |
| 2020 | 665 | 693 |
| 2021 | 534 | 662 |
| 2022 | 512 | 613 |
| 2023 | 495 | 577 |
| 2024 | 466 | 470 |
| 2025 | 426 | 448 |
| 2026 | 267 | 344 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- PSAP/public responder network integrations6 Oct 2026US 12,755,622 B2Avive Solutions, Inc.
- Method/system to convert text-to-voice / voice-to-text in service of emergency communications6 Oct 2026US 12,756,780 B2Intrado Life & Safety, Inc.
- Systems and methods for priority emergency messages over Wi-Fi6 Oct 2026US 12,757,000 B2Cox Communications, Inc.
- Method for transmitting message by V2X UE in wireless communication system and device therefor6 Oct 2026US 12,757,001 B2LG Electronics Inc.
- Modular telematics control unit and automotive vehicle equipped with such a telematics control unit6 Oct 2026US 12,757,002 B2Valeo Comfort and Driving Assistance
- Devices, systems, and methods for hazard avoidance8 Oct 2026US 2026/0311591 A1
- Accurate location sensing for communicating data to transportation infrastructure server8 Oct 2026US 2026/0311592 A1AT&T Intellectual Property I, L. P.
- Electronic device, communication method and storage medium8 Oct 2026US 2026/0313323 A1Sony Group Corporation
- Method and device for supporting warning message8 Oct 2026US 2026/0313342 A1Beijing Xiaomi Mobile Software Co., Ltd.
- Method and device for direct communication to support public warning message8 Oct 2026US 2026/0313343 A1Beijing Xiaomi Mobile Software Co., Ltd.
Most cited
By later US patents
- Location of a mobile station using a plurality of commercial wireless infrastructures1,007US 6,236,365 B1TracBeam LLC · 2001
- Cellular phone based automatic emergency vessel/vehicle location system706US 5,555,286 ATendler Technologies, Inc. · 1996
- Cellular terminal for providing public emergency call location information646US 5,479,482 AAT&T Corp. · 1995
- Cellular telephone advertising system620US 5,852,775 AEarthweb, Inc. · 1998
- Cellular telecommunication switching system for providing public emergency call location information602US 5,388,147 AAT&T Corp. · 1995