- All sections
- H - Electricity
- H01L - Semiconductor devices not covered by class
- H01L 21/306 - Chemical or electrical treatment, e.g. electrolytic etching
Patent holdings for IPC class H01L 21/306
Total number of patents in this class: 8188
10-year publication summary
|
923
|
789
|
768
|
792
|
555
|
493
|
457
|
431
|
384
|
40
|
| 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. | 46560 |
1215 |
| Tokyo Electron Limited | 13363 |
555 |
| International Business Machines Corporation | 61906 |
379 |
| Applied Materials, Inc. | 19628 |
377 |
| Screen Holdings Co., Ltd. | 3009 |
316 |
| Samsung Electronics Co., Ltd. | 151303 |
215 |
| Lam Research Corporation | 5433 |
187 |
| GLOBALFOUNDRIES U.S. Inc. | 6405 |
125 |
| Intel Corporation | 46579 |
121 |
| United Microelectronics Corp. | 4385 |
108 |
| Semiconductor Manufacturing International (Shanghai) Corporation | 1745 |
90 |
| Micron Technology, Inc. | 27172 |
88 |
| Kioxia Corporation | 10521 |
79 |
| Fujimi Incorporated | 768 |
72 |
| Adeia Semiconductor Solutions LLC | 757 |
70 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10976 |
60 |
| Ebara Corporation | 2252 |
60 |
| FUJIFILM Corporation | 30016 |
59 |
| Infineon Technologies AG | 8314 |
54 |
| Entegris, Inc. | 1950 |
51 |
| Other owners | 3907 |