- 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: 198
10-year publication summary
|
5
|
11
|
2
|
19
|
15
|
4
|
5
|
1
|
2
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Apple Inc. | 57234 |
21 |
| Eaton Cummins Automated Transmission Technologies LLC | 97 |
17 |
| Intel Corporation | 46583 |
12 |
| Qualcomm Incorporated | 88980 |
10 |
| Eaton Cummins Automated Transmission Tech., LLC | 11 |
10 |
| Samsung Electronics Co., Ltd. | 151726 |
8 |
| Eaton Cummins Automated Transmission Technologies | 10 |
8 |
| Cisco Technology, Inc. | 22223 |
6 |
| Huawei Technologies Co., Ltd. | 118321 |
6 |
| Ericsson | 22176 |
5 |
| Ciena Corporation | 2089 |
4 |
| Nokia Technologies Oy | 19822 |
4 |
| Panasonic Corporation | 19867 |
3 |
| BlackBerry Limited | 5122 |
2 |
| Siemens AG | 24291 |
2 |
| LG Electronics Inc. | 74447 |
2 |
| General Motors LLC | 1758 |
2 |
| Tekelec, Inc. | 209 |
2 |
| NTT DoCoMo, Inc. | 14047 |
2 |
| Panasonic Intellectual Property Corporation of America | 7034 |
2 |
| Other owners | 70 |