- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 19/04 - Thermionic cathodes
Patent holdings for IPC class H01J 19/04
Total number of patents in this class: 8
10-year publication summary
|
2
|
1
|
1
|
0
|
0
|
0
|
1
|
0
|
0
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| British Telecommunications Public Limited Company | 2647 |
2 |
| Advanced Fusion Systems LLC | 66 |
1 |
| Nuctech Company Limited | 1435 |
1 |
| NuFlare Technology, Inc. | 893 |
1 |
| UT-Battelle, LLC | 1489 |
1 |
| X-Illumina, Inc. | 3 |
1 |
| Modern Hydrogen, Inc. | 40 |
1 |
| Other owners | 0 |