- 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: 3805
10-year publication summary
|
70
|
142
|
261
|
482
|
652
|
674
|
633
|
578
|
475
|
145
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Samsung Electronics Co., Ltd. | 131630 |
177 |
| Motorola Solutions, Inc. | 4355 |
164 |
| Qualcomm Incorporated | 76576 |
157 |
| LG Electronics Inc. | 69257 |
138 |
| T-Mobile USA, Inc. | 3668 |
106 |
| AT&T Intellectual Property I, L.P. | 9886 |
87 |
| Huawei Technologies Co., Ltd. | 100781 |
79 |
| Apple Inc. | 50209 |
75 |
| RapidSOS, Inc. | 136 |
74 |
| Telefonaktiebolaget LM Ericsson (publ) | 26435 |
62 |
| NEC Corporation | 32703 |
57 |
| Ericsson | 20417 |
55 |
| International Business Machines Corporation | 60644 |
47 |
| BlackBerry Limited | 5958 |
45 |
| ZTE Corporation | 39218 |
38 |
| Malikie Innovations Limited | 7703 |
35 |
| Intel Corporation | 45621 |
33 |
| Nokia Technologies Oy | 15057 |
33 |
| Microsoft Technology Licensing, LLC | 51439 |
32 |
| AT&T Mobility II LLC | 1982 |
29 |
| Other owners | 2282 |