- 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: 4064
10-year publication summary
|
142
|
261
|
483
|
652
|
675
|
638
|
583
|
485
|
433
|
33
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Samsung Electronics Co., Ltd. | 139001 |
212 |
| Qualcomm Incorporated | 81865 |
168 |
| Motorola Solutions, Inc. | 4391 |
168 |
| LG Electronics Inc. | 71039 |
145 |
| T-Mobile USA, Inc. | 3903 |
113 |
| AT&T Intellectual Property I, L.P. | 9337 |
89 |
| RapidSOS, Inc. | 160 |
86 |
| Apple Inc. | 52750 |
83 |
| Huawei Technologies Co., Ltd. | 106762 |
80 |
| Telefonaktiebolaget LM Ericsson (publ) | 27416 |
66 |
| NEC Corporation | 34413 |
60 |
| Ericsson | 21144 |
57 |
| BlackBerry Limited | 5872 |
45 |
| International Business Machines Corporation | 60129 |
42 |
| ZTE Corporation | 41061 |
38 |
| Nokia Technologies Oy | 16542 |
38 |
| Malikie Innovations Limited | 7370 |
38 |
| Intel Corporation | 46126 |
34 |
| Microsoft Technology Licensing, LLC | 52886 |
34 |
| Allstate Insurance Company | 1760 |
26 |
| Other owners | 2442 |