- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 19/14 - Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
Patent holdings for IPC class H01J 19/14
Total number of patents in this class: 6
10-year publication summary
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| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Varian Semiconductor Equipment Associates, Inc. | 1282 |
2 |
| ASML Netherlands B.V. | 6816 |
2 |
| Koninklijke Philips Electronics N.V. | 13133 |
1 |
| Elve Inc. | 13 |
1 |
| Other owners | 0 |