- 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: 5073
10-year publication summary
|
635
|
645
|
535
|
546
|
536
|
359
|
355
|
307
|
299
|
286
|
| 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. | 46182 |
863 |
| Samsung Electronics Co., Ltd. | 149198 |
310 |
| International Business Machines Corporation | 61747 |
278 |
| Tokyo Electron Limited | 13155 |
231 |
| Applied Materials, Inc. | 19298 |
164 |
| United Microelectronics Corp. | 4311 |
158 |
| GLOBALFOUNDRIES U.S. Inc. | 6419 |
154 |
| Micron Technology, Inc. | 26591 |
136 |
| Intel Corporation | 46471 |
117 |
| Semiconductor Manufacturing International (Shanghai) Corporation | 1750 |
91 |
| Lam Research Corporation | 5382 |
78 |
| FUJIFILM Corporation | 29839 |
75 |
| Changxin Memory Technologies, Inc. | 4928 |
74 |
| Semiconductor Manufacturing International (Beijing) Corporation | 1034 |
66 |
| Shin-Etsu Chemical Co., Ltd. | 5795 |
57 |
| Nanya Technology Corporation | 2664 |
57 |
| Kioxia Corporation | 10455 |
52 |
| Tessera, Inc. | 611 |
50 |
| Nissan Chemical Corporation | 2110 |
46 |
| Texas Instruments Incorporated | 19498 |
45 |
| Other owners | 1971 |