- 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: 74
10-year publication summary
|
3
|
0
|
1
|
1
|
0
|
1
|
0
|
0
|
0
|
0
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| National Institute for Materials Science | 1108 |
18 |
| Sumitomo Chemical Company, Limited | 8808 |
10 |
| Kabushiki Kaisha Toshiba, doing business as Toshiba Corporation | 6275 |
6 |
| Nichia Corporation | 3394 |
3 |
| Ocean's King Lighting Science & Technology Co., Ltd. | 273 |
3 |
| Ube Industries, Ltd. | 921 |
2 |
| NEC Corporation | 32703 |
1 |
| Merck Patent GmbH | 5909 |
1 |
| Hon Hai Precision Industry Co., Ltd. | 4157 |
1 |
| Tsinghua University | 5426 |
1 |
| Mitsubishi Chemical Corporation | 4313 |
1 |
| Hamamatsu Photonics K.K. | 4161 |
1 |
| National Institute of Advanced Industrial Science and Technology | 3677 |
1 |
| The Board of Trustees of the University of Illinois | 2623 |
1 |
| Chelest Corporation | 10 |
1 |
| Chubu Chelest Co., Ltd. | 11 |
1 |
| citizen Electronics Co., Ltd. | 378 |
1 |
| Denka Company Limited | 2189 |
1 |
| Dowa Electronics Materials Co., Ltd. | 610 |
1 |
| Global OLED Technology LLC | 590 |
1 |
| Other owners | 18 |