- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 1/144 - Solid thermionic cathodes characterised by the material with other metal oxides as an emissive material
Patent holdings for IPC class H01J 1/144
Total number of patents in this class: 11
10-year publication summary
|
1
|
0
|
3
|
2
|
1
|
1
|
0
|
0
|
0
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| The Government of the United States of America, as represented by the Secretary of the Navy | 1459 |
2 |
| Toshiba Materials Co., Ltd. | 560 |
2 |
| Sharp Corporation | 10860 |
1 |
| Hon Hai Precision Industry Co., Ltd. | 4018 |
1 |
| The Johns Hopkins University | 5929 |
1 |
| Tsinghua University | 6245 |
1 |
| ICT Integrated Circuit Testing Gesellschaft für Halbleiterprüftechnik mbH | 157 |
1 |
| Modern Electron, LLC | 5 |
1 |
| Seongsik Chang | 2 |
1 |
| Other owners | 0 |