- 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: 224
10-year publication summary
|
9
|
8
|
16
|
15
|
9
|
26
|
17
|
12
|
13
|
5
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Huawei Technologies Co., Ltd. | 125590 |
41 |
| ZTE Corporation | 44368 |
23 |
| Zomedica Inc. | 164 |
10 |
| Marvell Asia PTE, Ltd. | 6235 |
5 |
| Telefonaktiebolaget LM Ericsson (publ) | 29015 |
5 |
| Hewlett-Packard Development Company, L.P. | 25103 |
4 |
| Hangzhou H3C Technologies Co., Ltd. | 371 |
4 |
| International Business Machines Corporation | 62871 |
3 |
| Guangzhou Shiyuan Electronics Co., Ltd. | 939 |
3 |
| Shanghai Zhaoxin Semiconductor Co., Ltd. | 186 |
3 |
| BlackBerry Limited | 4807 |
2 |
| Siemens Canada Limited | 88 |
2 |
| AT&T Intellectual Property I, L.P. | 10062 |
2 |
| Ericsson | 23125 |
2 |
| Texas Instruments Incorporated | 19643 |
2 |
| Marvell International Ltd. | 1041 |
2 |
| Amazon Technologies, Inc. | 28358 |
2 |
| Huawei Device Co., Ltd. | 2741 |
2 |
| Google LLC | 44941 |
2 |
| Guangzhou Shirui Electronics Co., Ltd. | 786 |
2 |
| Other owners | 103 |