- All sections
- H - Electricity
- H04L - Transmission of digital information, e.g. telegraphic communication
- H04L 12/02 - Data switching networks - Details
Patent holdings for IPC class H04L 12/02
Total number of patents in this class: 219
10-year publication summary
|
14
|
15
|
9
|
8
|
16
|
15
|
9
|
24
|
11
|
4
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Huawei Technologies Co., Ltd. | 100781 |
36 |
| ZTE Corporation | 39218 |
23 |
| Research In Motion Limited | 2283 |
5 |
| Marvell Asia PTE, Ltd. | 6841 |
5 |
| Telefonaktiebolaget LM Ericsson (publ) | 26435 |
5 |
| Hewlett-Packard Development Company, L.P. | 28538 |
4 |
| Hangzhou H3C Technologies Co., Ltd. | 388 |
4 |
| BlackBerry Limited | 5958 |
3 |
| LG Electronics Inc. | 69257 |
3 |
| International Business Machines Corporation | 60644 |
3 |
| BCE Inc. | 431 |
3 |
| Guangzhou Shiyuan Electronics Co., Ltd. | 898 |
3 |
| Nextair Corporation | 6 |
3 |
| Shanghai Zhaoxin Semiconductor Co., Ltd. | 157 |
3 |
| Siemens Canada Limited | 92 |
2 |
| AT&T Intellectual Property I, L.P. | 9886 |
2 |
| Matsushita Electric Industrial Co., Ltd. | 4724 |
2 |
| Ericsson | 20417 |
2 |
| Texas Instruments Incorporated | 19376 |
2 |
| Marvell International Ltd. | 1224 |
2 |
| Other owners | 104 |