- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 1/308 - Semiconductor cathodes, e.g. cathodes with PN junction layers
Patent holdings for IPC class H01J 1/308
Total number of patents in this class: 33
10-year publication summary
|
4
|
3
|
2
|
1
|
2
|
1
|
2
|
0
|
2
|
0
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Hon Hai Precision Industry Co., Ltd. | 4033 |
3 |
| Tsinghua University | 5922 |
3 |
| National Institute of Advanced Industrial Science and Technology | 3803 |
3 |
| Modern Electron, Inc. | 16 |
2 |
| Samsung Electronics Co., Ltd. | 146092 |
1 |
| Toshiba Corporation | 12336 |
1 |
| Infineon Technologies AG | 8221 |
1 |
| Hamamatsu Photonics K.K. | 4417 |
1 |
| Evince Technology Limited | 10 |
1 |
| Fuzhou University | 316 |
1 |
| HRL Laboratories, LLC | 1600 |
1 |
| KLA-Tencor Corporation | 2544 |
1 |
| Kumoh National Institute of Technology Industry-Academic Cooperation Foundation | 109 |
1 |
| Nuctech Company Limited | 1422 |
1 |
| Sanken Electric Co., Ltd. | 452 |
1 |
| National Technology & Engineering Solutions of Sandia, LLC | 1899 |
1 |
| Toshiba Energy Systems & Solutions Corp. | 1079 |
1 |
| Alcatel Lucent | 4541 |
1 |
| Thales | 1845 |
1 |
| L3Harris Technologies, Inc. | 293 |
1 |
| Other owners | 6 |