- 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: 256
10-year publication summary
|
28
|
23
|
22
|
30
|
22
|
26
|
16
|
9
|
6
|
6
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Samsung Electronics Co., Ltd. | 131630 |
29 |
| Rohm Co., Ltd. | 5843 |
15 |
| Nichia Corporation | 3394 |
9 |
| Lumeova, Inc. | 24 |
9 |
| Aledia | 303 |
6 |
| Samsung Display Co., Ltd. | 30585 |
5 |
| NGK Insulators, Ltd. | 4589 |
5 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10525 |
5 |
| Boe Technology Group Co., Ltd. | 35384 |
5 |
| Stanley Electric Co., Ltd. | 1102 |
5 |
| LG Display Co., Ltd. | 11907 |
4 |
| The Regents of the University of California | 18943 |
4 |
| LG Innotek Co., Ltd. | 6758 |
4 |
| Lumileds LLC | 1827 |
4 |
| Suzhou Lekin Semiconductor Co., Ltd. | 1710 |
4 |
| META Platforms Technologies, LLC | 4806 |
4 |
| Apple Inc. | 50209 |
3 |
| 3m Innovative Properties Company | 18406 |
3 |
| OSRAM Opto Semiconductors GmbH | 3390 |
3 |
| The United States of America as represented by the Secretary of the Army | 1195 |
3 |
| Other owners | 127 |