- 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: 47
10-year publication summary
|
4
|
7
|
2
|
1
|
0
|
1
|
2
|
4
|
2
|
1
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Toshiba Materials Co., Ltd. | 563 |
5 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6172 |
4 |
| Elve Inc. | 36 |
4 |
| Panasonic Corporation | 18951 |
3 |
| Toshiba Hokuto Electronics Corporation | 26 |
3 |
| Thales SA | 2391 |
2 |
| BAE Systems Bofors AB | 210 |
2 |
| Beijing University of Technology | 520 |
2 |
| NEC Network and Sensor Systems, Ltd. | 49 |
2 |
| Varex Imaging Corporation | 334 |
2 |
| Thales | 1771 |
2 |
| Hon Hai Precision Industry Co., Ltd. | 4023 |
1 |
| Huawei Technologies Co., Ltd. | 123677 |
1 |
| Raytheon Company | 8443 |
1 |
| Wisconsin Alumni Research Foundation | 3900 |
1 |
| Tsinghua University | 6222 |
1 |
| Korea Advanced Institute of Science and Technology | 4675 |
1 |
| Board of Trustees of Michigan State University | 1214 |
1 |
| Guangdong Midea Kitchen Appliances Manufacturing Co., Ltd. | 504 |
1 |
| National University Corporation Tohoku University | 154 |
1 |
| Other owners | 7 |