- All sections
- H - Electricity
- H01L - Semiconductor devices not covered by class
- H01L 21/308 - Chemical or electrical treatment, e.g. electrolytic etching using masks
Patent holdings for IPC class H01L 21/308
Total number of patents in this class: 5154
10-year publication summary
|
646
|
535
|
546
|
536
|
359
|
356
|
304
|
297
|
288
|
84
|
| 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 | 2026 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Taiwan Semiconductor Manufacturing Company, Ltd. | 47419 |
872 |
| Samsung Electronics Co., Ltd. | 154120 |
320 |
| International Business Machines Corporation | 62251 |
277 |
| Tokyo Electron Limited | 13553 |
242 |
| Applied Materials, Inc. | 20053 |
166 |
| United Microelectronics Corp. | 4452 |
160 |
| GLOBALFOUNDRIES U.S. Inc. | 6392 |
154 |
| Micron Technology, Inc. | 27310 |
133 |
| Intel Corporation | 46681 |
119 |
| Adeia Semiconductor Solutions LLC | 758 |
95 |
| Semiconductor Manufacturing International (Shanghai) Corporation | 1741 |
92 |
| FUJIFILM Corporation | 30277 |
81 |
| Lam Research Corporation | 5543 |
79 |
| Changxin Memory Technologies, Inc. | 4924 |
74 |
| Semiconductor Manufacturing International (Beijing) Corporation | 1033 |
66 |
| Shin-Etsu Chemical Co., Ltd. | 5952 |
60 |
| Nanya Technology Corporation | 2857 |
56 |
| Kioxia Corporation | 10709 |
52 |
| Nissan Chemical Corporation | 2170 |
48 |
| Texas Instruments Incorporated | 19638 |
46 |
| Other owners | 1962 |