- All sections
- H - Electricity
- H01J - Electric discharge tubes or discharge lamps
- H01J 11/40 - Layers for protecting or enhancing the electron emission, e.g. MgO layers
Patent holdings for IPC class H01J 11/40
Total number of patents in this class: 87
10-year publication summary
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| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Panasonic Corporation | 20180 |
66 |
| Matsushita Electric Industrial Co., Ltd. | 1871 |
6 |
| Hitachi, Ltd. | 15416 |
4 |
| LG Electronics Inc. | 72357 |
3 |
| Hitachi Plasma Display Limited | 93 |
3 |
| Samsung Display Co., Ltd. | 34170 |
1 |
| Semiconductor Energy Laboratory Co., Ltd. | 11353 |
1 |
| Korea Advanced Institute of Science and Technology | 4323 |
1 |
| Fujitsu Hitachi Plasma Display Limited | 55 |
1 |
| Snu R&db Foundation | 581 |
1 |
| Other owners | 0 |