- 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: 4796
10-year publication summary
|
261
|
483
|
652
|
677
|
640
|
587
|
510
|
455
|
457
|
343
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Samsung Electronics Co., Ltd. | 158156 |
291 |
| Qualcomm Incorporated | 92563 |
192 |
| Motorola Solutions, Inc. | 4581 |
181 |
| LG Electronics Inc. | 75845 |
155 |
| T-Mobile USA, Inc. | 4504 |
137 |
| RapidSOS, Inc. | 216 |
117 |
| AT&T Intellectual Property I, L.P. | 10006 |
114 |
| Apple Inc. | 58936 |
102 |
| Huawei Technologies Co., Ltd. | 123677 |
91 |
| Telefonaktiebolaget LM Ericsson (publ) | 28848 |
73 |
| NEC Corporation | 37064 |
65 |
| Ericsson | 22815 |
63 |
| T-Mobile Innovations LLC | 4124 |
62 |
| Nokia Technologies Oy | 21366 |
47 |
| BlackBerry Limited | 4889 |
43 |
| International Business Machines Corporation | 62672 |
43 |
| Malikie Innovations Limited | 6426 |
43 |
| ZTE Corporation | 44219 |
41 |
| NTT DoCoMo, Inc. | 14805 |
39 |
| Intel Corporation | 47100 |
34 |
| Other owners | 2863 |