- All sections
- H - Electricity
- H04L - Transmission of digital information, e.g. telegraphic communication
- H04L 12/04 - Switchboards
Patent holdings for IPC class H04L 12/04
Total number of patents in this class: 86
10-year publication summary
|
6
|
13
|
7
|
3
|
10
|
5
|
5
|
4
|
5
|
0
|
| 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 |
14 |
| ZTE Corporation | 39218 |
8 |
| Hewlett Packard Enterprise Development LP | 10702 |
5 |
| Samsung Electronics Co., Ltd. | 131630 |
4 |
| Ericsson | 20417 |
3 |
| International Business Machines Corporation | 60644 |
2 |
| NEC Corporation | 32703 |
2 |
| Cisco Technology, Inc. | 18858 |
2 |
| Dell Products L.P. | 11144 |
2 |
| Hangzhou H3C Technologies Co., Ltd. | 388 |
2 |
| Nokia Siemens Networks Oy | 1582 |
2 |
| SMART Technologies ULC | 355 |
2 |
| Telefonaktiebolaget LM Ericsson (publ) | 26435 |
2 |
| Cplabs, Inc. | 81 |
2 |
| Apple Inc. | 50209 |
1 |
| Qualcomm Incorporated | 76576 |
1 |
| Sony Corporation | 32931 |
1 |
| The Boeing Company | 19843 |
1 |
| Hewlett-Packard Development Company, L.P. | 28538 |
1 |
| Texas Instruments Incorporated | 19376 |
1 |
| Other owners | 28 |