- All sections
- H - Electricity
- H04N - Pictorial communication, e.g. television
- H04N 9/27 - Picture reproducers using cathode ray tubes with variable depth of penetration of electron beam into the luminescent layer, e.g. penetrons
Patent holdings for IPC class H04N 9/27
Total number of patents in this class: 4
10-year publication summary
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0
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1
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0
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0
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0
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0
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0
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0
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0
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0
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| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Canon Inc. | 36841 |
1 |
| National Taiwan University | 1140 |
1 |
| Lite-On Technology Corporation | 720 |
1 |
| TelePresence Technologies, LLC | 14 |
1 |
| Other owners | 0 |