- 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: 84
10-year publication summary
|
7
|
3
|
10
|
5
|
5
|
4
|
5
|
0
|
0
|
1
|
| 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 |
12 |
| ZTE Corporation | 44368 |
7 |
| Hewlett Packard Enterprise Development LP | 12492 |
5 |
| Samsung Electronics Co., Ltd. | 159755 |
4 |
| Ericsson | 23125 |
3 |
| International Business Machines Corporation | 62871 |
2 |
| NEC Corporation | 37563 |
2 |
| Cisco Technology, Inc. | 22668 |
2 |
| Dell Products L.P. | 17348 |
2 |
| Nokia Siemens Networks Oy | 1510 |
2 |
| SMART Technologies ULC | 304 |
2 |
| Telefonaktiebolaget LM Ericsson (publ) | 29015 |
2 |
| Cplabs, Inc. | 62 |
2 |
| Apple Inc. | 59479 |
1 |
| Qualcomm Incorporated | 93957 |
1 |
| Sony Corporation | 29876 |
1 |
| The Boeing Company | 20232 |
1 |
| Hewlett-Packard Development Company, L.P. | 25103 |
1 |
| Texas Instruments Incorporated | 19643 |
1 |
| Texas Instruments Japan, Ltd. | 1656 |
1 |
| Other owners | 30 |