- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 61/09 - Hollow cathodes
Patent holdings for IPC class H01J 61/09
Total number of patents in this class: 8
10-year publication summary
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0
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0
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0
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1
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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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| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| KLA-Tencor Corporation | 2520 |
2 |
| Samsung Electronics Co., Ltd. | 156823 |
1 |
| EI LIGHTING Co., Ltd. | 8 |
1 |
| PerkinElmer Health Sciences, Inc. | 200 |
1 |
| Senko Co., Ltd. | 2 |
1 |
| Toshiba Materials Co., Ltd. | 564 |
1 |
| PerkinElmer Singapore PTE. LTD. | 24 |
1 |
| Other owners | 0 |