- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 29/50 - Electron guns two or more guns being arranged in a single vacuum space, e.g. for plural-ray tubes
Patent holdings for IPC class H01J 29/50
Total number of patents in this class: 11
10-year publication summary
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0
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2
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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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1
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Samsung Electronics Co., Ltd. | 145416 |
1 |
| Hewlett-Packard Development Company, L.P. | 25903 |
1 |
| Electronics and Telecommunications Research Institute | 9367 |
1 |
| Advantest Corporation | 1829 |
1 |
| Carl Zeiss SMT GmbH | 2965 |
1 |
| China Star Optoelectronics International (HK) Limited | 3 |
1 |
| ICT Integrated Circuit Testing Gesellschaft für Halbleiterprüftechnik mbH | 158 |
1 |
| Jiddtek Pty Ltd | 1 |
1 |
| Sarnoff Corporation | 40 |
1 |
| Varex Imaging Corporation | 304 |
1 |
| Canon Electron Tubes & Devices Co., Ltd. | 164 |
1 |
| Other owners | 0 |