- 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: 9
10-year publication summary
|
3
|
0
|
2
|
1
|
1
|
0
|
0
|
0
|
1
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| British Telecommunications Public Limited Company | 2575 |
2 |
| Advanced Fusion Systems LLC | 66 |
1 |
| INFICON GmbH | 59 |
1 |
| Nuctech Company Limited | 1275 |
1 |
| NuFlare Technology, Inc. | 770 |
1 |
| UT-Battelle, LLC | 1333 |
1 |
| X-Illumina, Inc. | 3 |
1 |
| Modern Electron, Inc. | 40 |
1 |
| Other owners | 0 |