- All sections
- H - Electricity
- H01L - Semiconductor devices not covered by class
- H01L 33/28 - Materials of the light emitting region containing only elements of group II and group VI of the periodic system
Patent holdings for IPC class H01L 33/28
Total number of patents in this class: 236
10-year publication summary
|
21
|
30
|
22
|
26
|
15
|
9
|
5
|
8
|
6
|
0
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Samsung Electronics Co., Ltd. | 153573 |
25 |
| Rohm Co., Ltd. | 6740 |
9 |
| Lumeova, Inc. | 28 |
9 |
| Samsung Display Co., Ltd. | 37753 |
8 |
| Nichia Corporation | 3827 |
8 |
| Aledia | 360 |
6 |
| NGK Insulators, Ltd. | 5186 |
5 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10993 |
5 |
| Boe Technology Group Co., Ltd. | 42901 |
5 |
| Stanley Electric Co., Ltd. | 1340 |
5 |
| LG Display Co., Ltd. | 14241 |
4 |
| The Regents of the University of California | 20506 |
4 |
| LG Innotek Co., Ltd. | 8163 |
4 |
| Silanna UV Technologies Pte Ltd | 123 |
4 |
| META Platforms Technologies, LLC | 6305 |
4 |
| Apple Inc. | 58049 |
3 |
| OSRAM Opto Semiconductors GmbH | 3268 |
3 |
| Beijing BOE Optoelectronics Technology Co., Ltd. | 3919 |
3 |
| Petalux Inc. | 17 |
3 |
| Semimaterials Co., Ltd. | 19 |
3 |
| Other owners | 116 |