- 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
|
2
|
4
|
7
|
2
|
1
|
0
|
0
|
2
|
1
|
2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
Owner |
All patents
|
This class
|
---|---|---|
Toshiba Materials Co., Ltd. | 600 |
5 |
Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6275 |
4 |
Thales | 1854 |
4 |
Panasonic Corporation | 20786 |
3 |
Thales SA | 2318 |
3 |
Toshiba Hokuto Electronics Corporation | 27 |
3 |
BAE Systems Bofors AB | 187 |
2 |
Beijing University of Technology | 437 |
2 |
NEC Network and Sensor Systems, Ltd. | 49 |
2 |
Varex Imaging Corporation | 294 |
2 |
Hon Hai Precision Industry Co., Ltd. | 4157 |
1 |
Tokyo Electron Limited | 11599 |
1 |
Wisconsin Alumni Research Foundation | 3774 |
1 |
Tsinghua University | 5426 |
1 |
Korea Advanced Institute of Science and Technology | 3906 |
1 |
Board of Trustees of Michigan State University | 1141 |
1 |
National University Corporation Tohoku University | 194 |
1 |
The United States of America as represented by the Secretary of the Air Force | 754 |
1 |
Alcatel Lucent | 4720 |
1 |
Canon Electron Tubes & Devices Co., Ltd. | 154 |
1 |
Other owners | 4 |