- 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: 1514
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. | 13195 |
247 |
| Sharp Kabushiki Kaisha | 18756 |
134 |
| Kyocera Corporation | 13861 |
92 |
| Panasonic Corporation | 20085 |
90 |
| Qualcomm Incorporated | 85914 |
64 |
| NEC Corporation | 35793 |
53 |
| LG Electronics Inc. | 73383 |
51 |
| Samsung Electronics Co., Ltd. | 147003 |
47 |
| Sony Corporation | 31004 |
36 |
| Fujitsu Limited | 18404 |
24 |
| Ericsson | 21821 |
22 |
| Mitsubishi Electric Corporation | 46249 |
21 |
| Huawei Technologies Co., Ltd. | 113191 |
19 |
| Apple Inc. | 55229 |
17 |
| Sharp Corporation | 10270 |
17 |
| Electronics and Telecommunications Research Institute | 9408 |
15 |
| Nippon Telegraph and Telephone Corporation | 17367 |
15 |
| Sun Patent Trust | 2001 |
15 |
| Nokia Technologies Oy | 18175 |
13 |
| Cisco Technology, Inc. | 19985 |
11 |
| Other owners | 511 |