- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 31/34 - Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen having regulation of screen potential at cathode potential, e.g. orthicon
Patent holdings for IPC class H01J 31/34
Total number of patents in this class: 2
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
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Koninklijke Philips Electronics N.V. | 13133 |
1 |
Philips Intellectual Property & Standards GmbH | 2395 |
1 |
Other owners | 0 |