- All sections
- H - Electricity
- H01L - Semiconductor devices not covered by class
- H01L 33/40 - Materials therefor
Patent holdings for IPC class H01L 33/40
Total number of patents in this class: 2374
10-year publication summary
|
258
|
228
|
225
|
252
|
269
|
222
|
179
|
147
|
166
|
47
|
| 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Seoul Viosys Co., Ltd. | 1359 |
170 |
| Suzhou Lekin Semiconductor Co., Ltd. | 1710 |
163 |
| Epistar Corporation | 1553 |
123 |
| Samsung Electronics Co., Ltd. | 131630 |
121 |
| Nichia Corporation | 3394 |
112 |
| OSRAM Opto Semiconductors GmbH | 3390 |
109 |
| OSRAM OLED GmbH | 1841 |
96 |
| Samsung Display Co., Ltd. | 30585 |
85 |
| Lumileds LLC | 1827 |
59 |
| Micron Technology, Inc. | 24960 |
48 |
| Quanzhou Sanan Semiconductor Technology Co., Ltd | 202 |
42 |
| Sensor Electronic Technology, Inc. | 471 |
40 |
| Rohm Co., Ltd. | 5843 |
30 |
| LG Innotek Co., Ltd. | 6758 |
30 |
| Creeled, Inc. | 748 |
30 |
| Dowa Electronics Materials Co., Ltd. | 610 |
26 |
| Seoul Semiconductor Co., Ltd. | 1073 |
26 |
| LG Electronics Inc. | 69257 |
25 |
| Nikkiso Co., Ltd. | 754 |
24 |
| Xiamen San'an Optoelectronics Co., Ltd. | 245 |
23 |
| Other owners | 992 |