- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 29/20 - Luminescent screens characterised by the luminescent material
Patent holdings for IPC class H01J 29/20
Total number of patents in this class: 50
10-year publication summary
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1
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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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1
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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
|
|---|---|---|
| National Institute for Materials Science | 1089 |
9 |
| Sumitomo Chemical Company, Limited | 9057 |
8 |
| Ocean's King Lighting Science & Technology Co., Ltd. | 273 |
3 |
| Nichia Corporation | 3808 |
2 |
| Ube Industries, Ltd. | 799 |
2 |
| NEC Corporation | 36472 |
1 |
| Merck Patent GmbH | 5743 |
1 |
| Hon Hai Precision Industry Co., Ltd. | 4009 |
1 |
| Tsinghua University | 6091 |
1 |
| National Institute of Advanced Industrial Science and Technology | 3794 |
1 |
| The Board of Trustees of the University of Illinois | 2742 |
1 |
| Chelest Corporation | 6 |
1 |
| Chubu Chelest Co., Ltd. | 6 |
1 |
| citizen Electronics Co., Ltd. | 342 |
1 |
| Denka Company Limited | 2682 |
1 |
| Dowa Electronics Materials Co., Ltd. | 639 |
1 |
| Global OLED Technology LLC | 465 |
1 |
| Ishihara Sangyo Kaisha, Ltd. | 666 |
1 |
| Mitsui Mining & Smelting Co., Ltd. | 1393 |
1 |
| Nagaoka University of Technology | 75 |
1 |
| Other owners | 11 |