- All sections
- H - Electricity
- H04J - Multiplex communication
- H04J 3/12 - Arrangements providing for calling or supervisory signals
Patent holdings for IPC class H04J 3/12
Total number of patents in this class: 208
10-year publication summary
|
11
|
5
|
11
|
2
|
19
|
15
|
4
|
5
|
1
|
1
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Apple Inc. | 55229 |
21 |
| Eaton Cummins Automated Transmission Technologies LLC | 94 |
17 |
| Intel Corporation | 47051 |
12 |
| Qualcomm Incorporated | 85914 |
10 |
| Eaton Cummins Automated Transmission Tech., LLC | 11 |
10 |
| Samsung Electronics Co., Ltd. | 147003 |
9 |
| Cisco Technology, Inc. | 19985 |
9 |
| Eaton Cummins Automated Transmission Technologies | 10 |
8 |
| Huawei Technologies Co., Ltd. | 113191 |
7 |
| Ericsson | 21821 |
5 |
| Ciena Corporation | 2034 |
4 |
| Nokia Technologies Oy | 18175 |
4 |
| Panasonic Corporation | 20085 |
3 |
| Tekelec Global, Inc. | 69 |
3 |
| Avago Technologies International Sales Pte. Limited | 8739 |
3 |
| BlackBerry Limited | 5359 |
2 |
| Siemens AG | 24437 |
2 |
| LG Electronics Inc. | 73383 |
2 |
| General Motors LLC | 1803 |
2 |
| Fujitsu Limited | 18404 |
2 |
| Other owners | 73 |