- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 23/04 - Cathodes
Patent holdings for IPC class H01J 23/04
Total number of patents in this class: 44
10-year publication summary
|
2
|
4
|
7
|
2
|
1
|
0
|
0
|
2
|
3
|
2
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toshiba Materials Co., Ltd. | 664 |
5 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6272 |
4 |
| Panasonic Corporation | 20042 |
3 |
| Toshiba Hokuto Electronics Corporation | 26 |
3 |
| Elve Inc. | 30 |
3 |
| Thales SA | 2351 |
2 |
| BAE Systems Bofors AB | 205 |
2 |
| Beijing University of Technology | 497 |
2 |
| NEC Network and Sensor Systems, Ltd. | 47 |
2 |
| Varex Imaging Corporation | 305 |
2 |
| Thales | 1819 |
2 |
| Hon Hai Precision Industry Co., Ltd. | 4029 |
1 |
| Huawei Technologies Co., Ltd. | 113853 |
1 |
| Raytheon Company | 8394 |
1 |
| Wisconsin Alumni Research Foundation | 3883 |
1 |
| Tsinghua University | 5953 |
1 |
| Korea Advanced Institute of Science and Technology | 4403 |
1 |
| Board of Trustees of Michigan State University | 1192 |
1 |
| National University Corporation Tohoku University | 172 |
1 |
| The United States of America as represented by the Secretary of the Air Force | 852 |
1 |
| Other owners | 5 |