- All sections
- H - Electricity
- H04W - Wireless communication networks
- H04W 4/90 - Services for handling of emergency or hazardous situations, e.g. earthquake and tsunami warning systems [ETWS]
Patent holdings for IPC class H04W 4/90
Total number of patents in this class: 4242
10-year publication summary
|
142
|
261
|
483
|
652
|
675
|
640
|
587
|
493
|
441
|
227
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Samsung Electronics Co., Ltd. | 144426 |
227 |
| Qualcomm Incorporated | 84634 |
179 |
| Motorola Solutions, Inc. | 4381 |
170 |
| LG Electronics Inc. | 72559 |
147 |
| T-Mobile USA, Inc. | 4050 |
117 |
| RapidSOS, Inc. | 172 |
96 |
| AT&T Intellectual Property I, L.P. | 9481 |
94 |
| Apple Inc. | 54527 |
89 |
| Huawei Technologies Co., Ltd. | 111237 |
84 |
| Telefonaktiebolaget LM Ericsson (publ) | 27825 |
67 |
| NEC Corporation | 35424 |
65 |
| Ericsson | 21622 |
58 |
| International Business Machines Corporation | 61123 |
43 |
| BlackBerry Limited | 5165 |
42 |
| Nokia Technologies Oy | 17579 |
42 |
| Malikie Innovations Limited | 7188 |
41 |
| ZTE Corporation | 42052 |
39 |
| Intel Corporation | 46751 |
34 |
| Microsoft Technology Licensing, LLC | 53545 |
33 |
| T-Mobile Innovations LLC | 3598 |
31 |
| Other owners | 2544 |