- 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: 5050
10-year publication summary
|
635
|
645
|
535
|
546
|
536
|
359
|
354
|
307
|
299
|
262
|
| 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 | 2025 |
Principal owners for this class
| Owner |
All patents
|
This class
|
|---|---|---|
| Taiwan Semiconductor Manufacturing Company, Ltd. | 44638 |
854 |
| Samsung Electronics Co., Ltd. | 148584 |
307 |
| International Business Machines Corporation | 61651 |
278 |
| Tokyo Electron Limited | 13043 |
231 |
| Applied Materials, Inc. | 19087 |
163 |
| United Microelectronics Corp. | 4275 |
158 |
| GLOBALFOUNDRIES U.S. Inc. | 6413 |
154 |
| Micron Technology, Inc. | 26365 |
136 |
| Intel Corporation | 46760 |
117 |
| Semiconductor Manufacturing International (Shanghai) Corporation | 1751 |
91 |
| Lam Research Corporation | 5340 |
78 |
| FUJIFILM Corporation | 29742 |
75 |
| Changxin Memory Technologies, Inc. | 4929 |
74 |
| Semiconductor Manufacturing International (Beijing) Corporation | 1033 |
66 |
| Nanya Technology Corporation | 2626 |
57 |
| Shin-Etsu Chemical Co., Ltd. | 5743 |
53 |
| Kioxia Corporation | 10453 |
52 |
| Tessera, Inc. | 615 |
50 |
| Nissan Chemical Corporation | 2090 |
45 |
| Texas Instruments Incorporated | 19481 |
44 |
| Other owners | 1967 |