- All sections
- H - Electricity
- H04J - Multiplex communication
- H04J 1/00 - Frequency-division multiplex systems
Patent holdings for IPC class H04J 1/00
Total number of patents in this class: 1504
10-year publication summary
|
53
|
63
|
49
|
38
|
30
|
8
|
9
|
5
|
5
|
4
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NTT DoCoMo, Inc. | 13494 |
246 |
| Sharp Kabushiki Kaisha | 18679 |
133 |
| Kyocera Corporation | 14005 |
92 |
| Panasonic Corporation | 20012 |
90 |
| Qualcomm Incorporated | 87067 |
64 |
| NEC Corporation | 36136 |
52 |
| LG Electronics Inc. | 73763 |
51 |
| Samsung Electronics Co., Ltd. | 148173 |
46 |
| Sony Corporation | 30891 |
36 |
| Fujitsu Limited | 17689 |
23 |
| Ericsson | 21932 |
22 |
| Mitsubishi Electric Corporation | 46672 |
21 |
| Huawei Technologies Co., Ltd. | 114620 |
18 |
| Apple Inc. | 55791 |
17 |
| Sharp Corporation | 10293 |
17 |
| Electronics and Telecommunications Research Institute | 9458 |
15 |
| Nippon Telegraph and Telephone Corporation | 16791 |
15 |
| Sun Patent Trust | 2006 |
15 |
| Nokia Technologies Oy | 18576 |
13 |
| Cisco Technology, Inc. | 22084 |
11 |
| Other owners | 507 |