- All sections
- H - Electricity
- H01L - Semiconductor devices not covered by class
- H01L 21/465 - Chemical or electrical treatment, e.g. electrolytic etching
Patent holdings for IPC class H01L 21/465
Total number of patents in this class: 283
10-year publication summary
|
39
|
33
|
27
|
28
|
27
|
23
|
13
|
19
|
7
|
5
|
| 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. | 11456 |
58 |
| Taiwan Semiconductor Manufacturing Company, Ltd. | 43064 |
21 |
| Lam Research Corporation | 5292 |
17 |
| Samsung Display Co., Ltd. | 35017 |
12 |
| Boe Technology Group Co., Ltd. | 41421 |
7 |
| LAM Research AG | 191 |
6 |
| Japan Display Inc. | 6973 |
6 |
| Sharp Corporation | 10267 |
5 |
| Applied Materials, Inc. | 18792 |
5 |
| Tokyo Electron Limited | 12825 |
5 |
| Flosfia Inc. | 238 |
5 |
| Intel Corporation | 47062 |
4 |
| Magnolia Blue Corporation | 1159 |
4 |
| LG Display Co., Ltd. | 13815 |
3 |
| The Regents of the University of California | 20015 |
3 |
| Sumitomo Electric Industries, Ltd. | 15557 |
3 |
| Infineon Technologies AG | 8244 |
3 |
| Intermolecular, Inc. | 287 |
3 |
| Mitsubishi Gas Chemical Company, Inc. | 3474 |
3 |
| Screen Holdings Co., Ltd. | 2844 |
3 |
| Other owners | 107 |