- 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: 8142
10-year publication summary
|
842
|
923
|
789
|
768
|
792
|
555
|
491
|
455
|
425
|
354
|
| 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. | 46069 |
1207 |
| Tokyo Electron Limited | 13108 |
547 |
| International Business Machines Corporation | 61734 |
378 |
| Applied Materials, Inc. | 19204 |
373 |
| Screen Holdings Co., Ltd. | 2928 |
310 |
| Samsung Electronics Co., Ltd. | 148924 |
210 |
| Lam Research Corporation | 5362 |
191 |
| GLOBALFOUNDRIES U.S. Inc. | 6417 |
125 |
| Intel Corporation | 46445 |
120 |
| United Microelectronics Corp. | 4295 |
106 |
| Semiconductor Manufacturing International (Shanghai) Corporation | 1752 |
90 |
| Micron Technology, Inc. | 26502 |
89 |
| Kioxia Corporation | 10456 |
79 |
| Fujimi Incorporated | 765 |
72 |
| FUJIFILM Corporation | 29797 |
59 |
| Commissariat à l'énergie atomique et aux energies alternatives | 10946 |
59 |
| Ebara Corporation | 2219 |
59 |
| Infineon Technologies AG | 8279 |
54 |
| Semiconductor Manufacturing International (Beijing) Corporation | 1033 |
51 |
| Texas Instruments Incorporated | 19493 |
49 |
| Other owners | 3914 |