- 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: 163
10-year publication summary
|
20
|
25
|
15
|
17
|
15
|
7
|
2
|
4
|
5
|
2
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Semiconductor Energy Laboratory Co., Ltd. | 11873 |
15 |
| Boe Technology Group Co., Ltd. | 44484 |
12 |
| Lam Research Corporation | 5676 |
11 |
| Samsung Display Co., Ltd. | 38914 |
10 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 48629 |
10 |
| Shenzhen China Star Optoelectronics Technology Co., Ltd. | 8471 |
7 |
| Samsung Electronics Co., Ltd. | 158605 |
6 |
| Micron Technology, Inc. | 27666 |
6 |
| Hefei Xinsheng Optoelectronics Technology Co., Ltd. | 2650 |
4 |
| Infineon Technologies AG | 8410 |
3 |
| United Microelectronics Corp. | 4504 |
3 |
| Kyocera Sld Laser, Inc. | 304 |
3 |
| Magnolia White Corporation | 5591 |
3 |
| International Business Machines Corporation | 62754 |
2 |
| Sumitomo Electric Industries, Ltd. | 16331 |
2 |
| Tokyo Electron Limited | 13884 |
2 |
| SK Hynix Inc. | 12611 |
2 |
| Samsung SDI Co., Ltd. | 10745 |
2 |
| Au Optronics Corporation | 3170 |
2 |
| The Regents of the University of Michigan | 5023 |
2 |
| Other owners | 56 |