- 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: 1526
10-year publication summary
|
60
|
67
|
51
|
40
|
30
|
10
|
10
|
4
|
5
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| NTT DoCoMo, Inc. | 12779 |
248 |
| Sharp Kabushiki Kaisha | 18799 |
134 |
| Kyocera Corporation | 13689 |
92 |
| Panasonic Corporation | 20173 |
90 |
| Qualcomm Incorporated | 84501 |
65 |
| NEC Corporation | 35351 |
53 |
| LG Electronics Inc. | 72473 |
51 |
| Samsung Electronics Co., Ltd. | 144143 |
47 |
| Sony Corporation | 31148 |
38 |
| Fujitsu Limited | 18356 |
24 |
| Ericsson | 21593 |
22 |
| Mitsubishi Electric Corporation | 45811 |
21 |
| Huawei Technologies Co., Ltd. | 110995 |
20 |
| Apple Inc. | 54479 |
17 |
| Sharp Corporation | 10293 |
16 |
| Electronics and Telecommunications Research Institute | 9344 |
15 |
| Nippon Telegraph and Telephone Corporation | 17157 |
15 |
| Sun Patent Trust | 1991 |
15 |
| Nokia Technologies Oy | 17558 |
13 |
| Cisco Technology, Inc. | 19623 |
11 |
| Other owners | 519 |