- All sections
- H - Electricity
- H01L - Semiconductor devices not covered by class
- H01L 21/467 - Chemical or electrical treatment, e.g. electrolytic etching using masks
Patent holdings for IPC class H01L 21/467
Total number of patents in this class: 161
10-year publication summary
|
24
|
20
|
25
|
15
|
17
|
15
|
7
|
2
|
3
|
3
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Semiconductor Energy Laboratory Co., Ltd. | 11385 |
15 |
| Lam Research Corporation | 5213 |
12 |
| Boe Technology Group Co., Ltd. | 40814 |
12 |
| Samsung Display Co., Ltd. | 34472 |
10 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 42389 |
10 |
| Shenzhen China Star Optoelectronics Technology Co., Ltd. | 8478 |
7 |
| Samsung Electronics Co., Ltd. | 145025 |
6 |
| Micron Technology, Inc. | 26209 |
6 |
| Hefei Xinsheng Optoelectronics Technology Co., Ltd. | 2560 |
4 |
| Infineon Technologies AG | 8209 |
3 |
| United Microelectronics Corp. | 4248 |
3 |
| Japan Display Inc. | 7010 |
3 |
| Kyocera Sld Laser, Inc. | 298 |
3 |
| International Business Machines Corporation | 61185 |
2 |
| Sumitomo Electric Industries, Ltd. | 15414 |
2 |
| Tokyo Electron Limited | 12620 |
2 |
| SK Hynix Inc. | 11285 |
2 |
| Samsung SDI Co., Ltd. | 8140 |
2 |
| Au Optronics Corporation | 3508 |
2 |
| The Regents of the University of Michigan | 4676 |
2 |
| Other owners | 53 |